Esempio n. 1
0
HYPRE_Int
HYPRE_ParVectorSetConstantValues( HYPRE_ParVector  vector,
                                  HYPRE_Complex    value )
{
   return ( hypre_ParVectorSetConstantValues( (hypre_ParVector *) vector,
                                              value ) );
}
Esempio n. 2
0
void hypre_AMEOperatorB(void *data, void* x, void* y)
{
   hypre_AMEData *ame_data = data;
   hypre_AMSData *ams_data = ame_data -> precond;

   hypre_ParVectorSetConstantValues((hypre_ParVector*)y, 0.0);
   hypre_AMSSolve(ame_data -> precond, ams_data -> A, x, y);

   hypre_AMEDiscrDivFreeComponent(data, (hypre_ParVector *)y);
}
Esempio n. 3
0
HYPRE_Int hypre_AMEDiscrDivFreeComponent(void *esolver, hypre_ParVector *b)
{
   hypre_AMEData *ame_data = esolver;

   /* t3 = M b */
   hypre_ParCSRMatrixMatvec(1.0, ame_data -> M, b, 0.0, ame_data -> t3);

   /* t1 = G^t t3 */
   hypre_ParCSRMatrixMatvecT(1.0, ame_data -> G, ame_data -> t3, 0.0, ame_data -> t1);

   /* (G^t M G) t2 = t1 */
   hypre_ParVectorSetConstantValues(ame_data -> t2, 0.0);
   HYPRE_ParCSRPCGSolve(ame_data -> B2_G,
                        (HYPRE_ParCSRMatrix)ame_data -> A_G,
                        (HYPRE_ParVector)ame_data -> t1,
                        (HYPRE_ParVector)ame_data -> t2);

   /* b = b - G t2 */
   hypre_ParCSRMatrixMatvec(-1.0, ame_data -> G, ame_data -> t2, 1.0, b);

   return hypre_error_flag;
}
Esempio n. 4
0
HYPRE_Int
main( HYPRE_Int   argc,
      char *argv[] )
{


   HYPRE_Int        num_procs, myid;
   HYPRE_Int        verbose = 0, build_matrix_type = 1;
   HYPRE_Int        index, matrix_arg_index, commpkg_flag=3;
   HYPRE_Int        i, k, ierr=0;
   HYPRE_Int        row_start, row_end; 
   HYPRE_Int        col_start, col_end, global_num_rows;
   HYPRE_Int       *row_part, *col_part; 
   char      *csrfilename;
   HYPRE_Int        preload = 0, loop = 0, loop2 = LOOP2;   
   HYPRE_Int        bcast_rows[2], *info;
   


   hypre_ParCSRMatrix    *parcsr_A, *small_A;
   HYPRE_ParCSRMatrix    A_temp, A_temp_small; 
   hypre_CSRMatrix       *A_CSR;
   hypre_ParCSRCommPkg	 *comm_pkg;   

  
   HYPRE_Int                 nx, ny, nz;
   HYPRE_Int                 P, Q, R;
   HYPRE_Int                 p, q, r;
   HYPRE_Real          values[4];

   hypre_ParVector     *x_new;
   hypre_ParVector     *y_new, *y;
   HYPRE_Int                 *row_starts;
   HYPRE_Real          ans;
   HYPRE_Real          start_time, end_time, total_time, *loop_times;
   HYPRE_Real          T_avg, T_std;
   
   HYPRE_Int                   noparmprint = 0;
 
#if mydebug   
   HYPRE_Int  j, tmp_int;
#endif

   /*-----------------------------------------------------------
    * Initialize MPI
    *-----------------------------------------------------------*/


   hypre_MPI_Init(&argc, &argv);

   hypre_MPI_Comm_size(hypre_MPI_COMM_WORLD, &num_procs );
   hypre_MPI_Comm_rank(hypre_MPI_COMM_WORLD, &myid );



   /*-----------------------------------------------------------
    * default - is 27pt laplace
    *-----------------------------------------------------------*/

    
   build_matrix_type = 2;
   matrix_arg_index = argc;

   /*-----------------------------------------------------------
    * Parse command line
    *-----------------------------------------------------------*/
 
   index = 1;
   while ( index < argc) 
   {
      if  ( strcmp(argv[index], "-verbose") == 0 )
      {
         index++;  
         verbose = 1;
      }
      else if ( strcmp(argv[index], "-fromonecsrfile") == 0 )
      {
         index++;
         build_matrix_type      = 1;      
         matrix_arg_index = index; /*this tells where the name is*/
      }
      else if  ( strcmp(argv[index], "-commpkg") == 0 )
      {
         index++;  
         commpkg_flag = atoi(argv[index++]);
      }
      else if ( strcmp(argv[index], "-laplacian") == 0 )
      {
         index++;
         build_matrix_type      = 2;
         matrix_arg_index = index;
      }
      else if ( strcmp(argv[index], "-27pt") == 0 )
      {
         index++;
         build_matrix_type      = 4;
         matrix_arg_index = index;
      }
/*
      else if  ( strcmp(argv[index], "-nopreload") == 0 )
      {
         index++;  
         preload = 0;
      }
*/
      else if  ( strcmp(argv[index], "-loop") == 0 )
      {
         index++;  
         loop = atoi(argv[index++]);
      }
      else if  ( strcmp(argv[index], "-noparmprint") == 0 )
      {
         index++;  
         noparmprint = 1;
         
      }
      else  
      {
	 index++;
         /*hypre_printf("Warning: Unrecogized option '%s'\n",argv[index++] );*/
      }
   }
   
   
  
   /*-----------------------------------------------------------
    * Setup the Matrix problem   
    *-----------------------------------------------------------*/

  /*-----------------------------------------------------------
    *  Get actual partitioning- 
    *  read in an actual csr matrix.
    *-----------------------------------------------------------*/


   if (build_matrix_type ==1) /*read in a csr matrix from one file */
   {
      if (matrix_arg_index < argc)
      {
	 csrfilename = argv[matrix_arg_index];
      }
      else
      {
         hypre_printf("Error: No filename specified \n");
         exit(1);
      }
      if (myid == 0)
      {
	/*hypre_printf("  FromFile: %s\n", csrfilename);*/
         A_CSR = hypre_CSRMatrixRead(csrfilename);
      }
      row_part = NULL;
      col_part = NULL;

      parcsr_A = hypre_CSRMatrixToParCSRMatrix(hypre_MPI_COMM_WORLD, A_CSR, 
					       row_part, col_part);

      if (myid == 0) hypre_CSRMatrixDestroy(A_CSR);
   }
   else if (build_matrix_type ==2)
   {
      
      myBuildParLaplacian(argc, argv, matrix_arg_index,  &A_temp, !noparmprint);
     parcsr_A = (hypre_ParCSRMatrix *) A_temp;      
 
   }
   else if (build_matrix_type ==4)
   {
      myBuildParLaplacian27pt(argc, argv, matrix_arg_index, &A_temp, !noparmprint);
     parcsr_A = (hypre_ParCSRMatrix *) A_temp;
   }

 
  /*-----------------------------------------------------------
   * create a small problem so that timings are more accurate - 
   * code gets run twice (small laplace)
   *-----------------------------------------------------------*/

   /*this is no longer being used - preload = 0 is set at the beginning */

   if (preload == 1) 
   {
 
      /*hypre_printf("preload!\n");*/
      
        
       values[1] = -1;
       values[2] = -1;
       values[3] = -1;
       values[0] = - 6.0    ;

       nx = 2;
       ny = num_procs;
       nz = 2;

       P  = 1;
       Q  = num_procs;
       R  = 1;

       p = myid % P;
       q = (( myid - p)/P) % Q;
       r = ( myid - p - P*q)/( P*Q );
       
      A_temp_small = (HYPRE_ParCSRMatrix) GenerateLaplacian(hypre_MPI_COMM_WORLD, nx, ny, nz, 
				      P, Q, R, p, q, r, values);
      small_A = (hypre_ParCSRMatrix *) A_temp_small;     

      /*do comm packages*/
      hypre_NewCommPkgCreate(small_A);
      hypre_NewCommPkgDestroy(small_A); 

      hypre_MatvecCommPkgCreate(small_A);
      hypre_ParCSRMatrixDestroy(small_A); 
  
   }





   /*-----------------------------------------------------------
    *  Prepare for timing
    *-----------------------------------------------------------*/

   /* instead of preloading, let's not time the first one if more than one*/

    
   if (!loop)
   {
      loop = 1;
      /* and don't do any timings */
      
   }
   else
   {
      
      loop +=1;
      if (loop < 2) loop = 2;
   }
      
   
   loop_times = hypre_CTAlloc(HYPRE_Real, loop);
   


/******************************************************************************************/   

   hypre_MPI_Barrier(hypre_MPI_COMM_WORLD);

   if (commpkg_flag == 1 || commpkg_flag ==3 )
   {
  
      /*-----------------------------------------------------------
       *  Create new comm package
       *-----------------------------------------------------------*/


    
      if (!myid) hypre_printf("********************************************************\n" );  
 
      /*do loop times*/
      for (i=0; i< loop; i++) 
      {
         loop_times[i] = 0.0;
         for (k=0; k< loop2; k++) 
         {
         
            hypre_MPI_Barrier(hypre_MPI_COMM_WORLD);
            
            start_time = hypre_MPI_Wtime();

#if mpip_on
            if (i==(loop-1)) hypre_MPI_Pcontrol(1); 
#endif
     
            hypre_NewCommPkgCreate(parcsr_A);

#if mpip_on
            if (i==(loop-1)) hypre_MPI_Pcontrol(0); 
#endif  
  
            end_time = hypre_MPI_Wtime();
            
            end_time = end_time - start_time;
        
            hypre_MPI_Allreduce(&end_time, &total_time, 1,
                       HYPRE_MPI_REAL, hypre_MPI_MAX, hypre_MPI_COMM_WORLD);
         
            loop_times[i] += total_time;

            if (  !((i+1)== loop  &&  (k+1) == loop2)) hypre_NewCommPkgDestroy(parcsr_A); 
            
         }/*end of loop2 */
      
        
      } /*end of loop*/
      


      /* calculate the avg and std. */
      if (loop > 1)
      {
         
         /* calculate the avg and std. */
         stats_mo(loop_times, loop, &T_avg, &T_std);
      
         if (!myid) hypre_printf(" NewCommPkgCreate:  AVG. wall clock time =  %f seconds\n", T_avg);  
         if (!myid) hypre_printf("                    STD. for %d  runs     =  %f\n", loop-1, T_std);  
         if (!myid) hypre_printf("                    (Note: avg./std. timings exclude run 0.)\n");
         if (!myid) hypre_printf("********************************************************\n" );  
         for (i=0; i< loop; i++) 
         {
            if (!myid) hypre_printf("      run %d  =  %f sec.\n", i, loop_times[i]);  
         }
         if (!myid) hypre_printf("********************************************************\n" );  
   
       }
       else 
       {
         if (!myid) hypre_printf("********************************************************\n" );  
         if (!myid) hypre_printf(" NewCommPkgCreate:\n");  
         if (!myid) hypre_printf("      run time =  %f sec.\n", loop_times[0]);  
         if (!myid) hypre_printf("********************************************************\n" );  
       }


     /*-----------------------------------------------------------
       *  Verbose printing
       *-----------------------------------------------------------*/

      /*some verification*/

       global_num_rows = hypre_ParCSRMatrixGlobalNumRows(parcsr_A); 

       if (verbose) 
       {

	  ierr = hypre_ParCSRMatrixGetLocalRange( parcsr_A,
                                      &row_start, &row_end ,
                                       &col_start, &col_end );


	  comm_pkg = hypre_ParCSRMatrixCommPkg(parcsr_A);
     
          hypre_printf("myid = %i, my ACTUAL local range: [%i, %i]\n", myid, 
		 row_start, row_end);
	  
	
	  ierr = hypre_GetAssumedPartitionRowRange( myid, global_num_rows, &row_start, 
					      &row_end);


	  hypre_printf("myid = %i, my assumed local range: [%i, %i]\n", myid, 
		 row_start, row_end);

          hypre_printf("myid = %d, num_recvs = %d\n", myid, 
		 hypre_ParCSRCommPkgNumRecvs(comm_pkg)  );  

#if mydebug   
	  for (i=0; i < hypre_ParCSRCommPkgNumRecvs(comm_pkg); i++) 
	  {
              hypre_printf("myid = %d, recv proc = %d, vec_starts = [%d : %d]\n", 
		     myid,  hypre_ParCSRCommPkgRecvProcs(comm_pkg)[i], 
		     hypre_ParCSRCommPkgRecvVecStarts(comm_pkg)[i],
		     hypre_ParCSRCommPkgRecvVecStarts(comm_pkg)[i+1]-1);
	   }
#endif 
	  hypre_printf("myid = %d, num_sends = %d\n", myid, 
		 hypre_ParCSRCommPkgNumSends(comm_pkg)  );  

#if mydebug
	  for (i=0; i <hypre_ParCSRCommPkgNumSends(comm_pkg) ; i++) 
          {
	    tmp_int =  hypre_ParCSRCommPkgSendMapStarts(comm_pkg)[i+1] -  
                     hypre_ParCSRCommPkgSendMapStarts(comm_pkg)[i];
	    index = hypre_ParCSRCommPkgSendMapStarts(comm_pkg)[i];
	    for (j=0; j< tmp_int; j++) 
	    {
	       hypre_printf("myid = %d, send proc = %d, send element = %d\n",myid,  
		      hypre_ParCSRCommPkgSendProcs(comm_pkg)[i],
		      hypre_ParCSRCommPkgSendMapElmts(comm_pkg)[index+j]); 
	     }   
	  }
#endif
       }
       /*-----------------------------------------------------------
        *  To verify correctness (if commpkg_flag = 3)
        *-----------------------------------------------------------*/

       if (commpkg_flag == 3 ) 
       {
          /*do a matvec - we are assuming a square matrix */
          row_starts = hypre_ParCSRMatrixRowStarts(parcsr_A);
   
          x_new = hypre_ParVectorCreate(hypre_MPI_COMM_WORLD, global_num_rows, row_starts);
          hypre_ParVectorSetPartitioningOwner(x_new, 0);
          hypre_ParVectorInitialize(x_new);
          hypre_ParVectorSetRandomValues(x_new, 1);    
          
          y_new = hypre_ParVectorCreate(hypre_MPI_COMM_WORLD, global_num_rows, row_starts);
          hypre_ParVectorSetPartitioningOwner(y_new, 0);
          hypre_ParVectorInitialize(y_new);
          hypre_ParVectorSetConstantValues(y_new, 0.0);
          
          /*y = 1.0*A*x+1.0*y */
          hypre_ParCSRMatrixMatvec (1.0, parcsr_A, x_new, 1.0, y_new);
       }
   
   /*-----------------------------------------------------------
    *  Clean up after MyComm
    *-----------------------------------------------------------*/


       hypre_NewCommPkgDestroy(parcsr_A); 

   }

  




/******************************************************************************************/
/******************************************************************************************/

   hypre_MPI_Barrier(hypre_MPI_COMM_WORLD);


   if (commpkg_flag > 1 )
   {

      /*-----------------------------------------------------------
       *  Set up standard comm package
       *-----------------------------------------------------------*/

      bcast_rows[0] = 23;
      bcast_rows[1] = 1789;
      
      if (!myid) hypre_printf("********************************************************\n" );  
      /*do loop times*/
      for (i=0; i< loop; i++) 
      {

         loop_times[i] = 0.0;
         for (k=0; k< loop2; k++) 
         {
            

            hypre_MPI_Barrier(hypre_MPI_COMM_WORLD);

         
            start_time = hypre_MPI_Wtime();

#if time_gather
                  
            info = hypre_CTAlloc(HYPRE_Int, num_procs);
            
            hypre_MPI_Allgather(bcast_rows, 1, HYPRE_MPI_INT, info, 1, HYPRE_MPI_INT, hypre_MPI_COMM_WORLD); 

#endif

            hypre_MatvecCommPkgCreate(parcsr_A);

            end_time = hypre_MPI_Wtime();


            end_time = end_time - start_time;
        
            hypre_MPI_Allreduce(&end_time, &total_time, 1,
                          HYPRE_MPI_REAL, hypre_MPI_MAX, hypre_MPI_COMM_WORLD);

            loop_times[i] += total_time;
         
       
         if (  !((i+1)== loop  &&  (k+1) == loop2))   hypre_MatvecCommPkgDestroy(hypre_ParCSRMatrixCommPkg(parcsr_A));
               
         }/* end of loop 2*/
         
        
      } /*end of loop*/
      
      /* calculate the avg and std. */
      if (loop > 1)
      {
         
         stats_mo(loop_times, loop, &T_avg, &T_std);      
         if (!myid) hypre_printf("Current CommPkgCreate:  AVG. wall clock time =  %f seconds\n", T_avg);  
         if (!myid) hypre_printf("                        STD. for %d  runs     =  %f\n", loop-1, T_std);  
         if (!myid) hypre_printf("                        (Note: avg./std. timings exclude run 0.)\n");
         if (!myid) hypre_printf("********************************************************\n" );  
         for (i=0; i< loop; i++) 
         {
            if (!myid) hypre_printf("      run %d  =  %f sec.\n", i, loop_times[i]);  
         }
         if (!myid) hypre_printf("********************************************************\n" );  
         
      }
      else 
      {
         if (!myid) hypre_printf("********************************************************\n" );  
         if (!myid) hypre_printf(" Current CommPkgCreate:\n");  
         if (!myid) hypre_printf("      run time =  %f sec.\n", loop_times[0]);  
         if (!myid) hypre_printf("********************************************************\n" );  
      }





      /*-----------------------------------------------------------
       * Verbose printing
       *-----------------------------------------------------------*/

      /*some verification*/

    
       if (verbose) 
       {

          ierr = hypre_ParCSRMatrixGetLocalRange( parcsr_A,
						  &row_start, &row_end ,
						  &col_start, &col_end );


          comm_pkg = hypre_ParCSRMatrixCommPkg(parcsr_A);
     
          hypre_printf("myid = %i, std - my local range: [%i, %i]\n", myid, 
		 row_start, row_end);

          ierr = hypre_ParCSRMatrixGetLocalRange( parcsr_A,
						  &row_start, &row_end ,
						  &col_start, &col_end );

          hypre_printf("myid = %d, std - num_recvs = %d\n", myid, 
		 hypre_ParCSRCommPkgNumRecvs(comm_pkg)  );  

#if mydebug   
	  for (i=0; i < hypre_ParCSRCommPkgNumRecvs(comm_pkg); i++) 
          {
              hypre_printf("myid = %d, std - recv proc = %d, vec_starts = [%d : %d]\n", 
		     myid,  hypre_ParCSRCommPkgRecvProcs(comm_pkg)[i], 
		     hypre_ParCSRCommPkgRecvVecStarts(comm_pkg)[i],
		     hypre_ParCSRCommPkgRecvVecStarts(comm_pkg)[i+1]-1);
	  }
#endif
          hypre_printf("myid = %d, std - num_sends = %d\n", myid, 
		 hypre_ParCSRCommPkgNumSends(comm_pkg));  


#if mydebug
          for (i=0; i <hypre_ParCSRCommPkgNumSends(comm_pkg) ; i++) 
          {
	     tmp_int =  hypre_ParCSRCommPkgSendMapStarts(comm_pkg)[i+1] -  
	                hypre_ParCSRCommPkgSendMapStarts(comm_pkg)[i];
	     index = hypre_ParCSRCommPkgSendMapStarts(comm_pkg)[i];
	     for (j=0; j< tmp_int; j++) 
	     {
	        hypre_printf("myid = %d, std - send proc = %d, send element = %d\n",myid,  
		       hypre_ParCSRCommPkgSendProcs(comm_pkg)[i],
		       hypre_ParCSRCommPkgSendMapElmts(comm_pkg)[index+j]); 
	     }   
	  } 
#endif
       }

       /*-----------------------------------------------------------
        * Verify correctness
        *-----------------------------------------------------------*/

 

       if (commpkg_flag == 3 ) 
       { 
          global_num_rows = hypre_ParCSRMatrixGlobalNumRows(parcsr_A); 
          row_starts = hypre_ParCSRMatrixRowStarts(parcsr_A);
 
       
          y = hypre_ParVectorCreate(hypre_MPI_COMM_WORLD, global_num_rows,row_starts);
          hypre_ParVectorSetPartitioningOwner(y, 0);
          hypre_ParVectorInitialize(y);
          hypre_ParVectorSetConstantValues(y, 0.0);

          hypre_ParCSRMatrixMatvec (1.0, parcsr_A, x_new, 1.0, y);
      
       }

   }






   /*-----------------------------------------------------------
    *  Compare matvecs for both comm packages (3)
    *-----------------------------------------------------------*/

   if (commpkg_flag == 3 ) 
   { 
     /*make sure that y and y_new are the same  - now y_new should=0*/   
     hypre_ParVectorAxpy( -1.0, y, y_new );


     hypre_ParVectorSetRandomValues(y, 1);

     ans = hypre_ParVectorInnerProd( y, y_new );
     if (!myid)
     {
        
        if ( fabs(ans) > 1e-8 ) 
        {  
           hypre_printf("!!!!! WARNING !!!!! should be zero if correct = %6.10f\n", 
                  ans); 
        } 
        else
        {
           hypre_printf("Matvecs match ( should be zero = %6.10f )\n", 
                  ans); 
        }
     }
     

   }
 

   /*-----------------------------------------------------------
    *  Clean up
    *-----------------------------------------------------------*/

    
   hypre_ParCSRMatrixDestroy(parcsr_A); /*this calls the standard comm 
                                          package destroy - but we'll destroy 
                                          ours separately until it is
                                          incorporated */

  if (commpkg_flag == 3 ) 
  { 

      hypre_ParVectorDestroy(x_new);
      hypre_ParVectorDestroy(y);
      hypre_ParVectorDestroy(y_new);
  }




   hypre_MPI_Finalize();

   return(ierr);


}
Esempio n. 5
0
HYPRE_Int
hypre_ParKrylovClearVector( void *x )
{
   return ( hypre_ParVectorSetConstantValues( (hypre_ParVector *) x, 0.0 ) );
}
Esempio n. 6
0
HYPRE_Int
hypre_BoomerAMGCycleT( void              *amg_vdata, 
                   hypre_ParVector  **F_array,
                   hypre_ParVector  **U_array   )
{
   hypre_ParAMGData *amg_data = amg_vdata;

   /* Data Structure variables */

   hypre_ParCSRMatrix    **A_array;
   hypre_ParCSRMatrix    **P_array;
   hypre_ParCSRMatrix    **R_array;
   hypre_ParVector    *Vtemp;

   HYPRE_Int     **CF_marker_array;
   /* HYPRE_Int     **unknown_map_array; */
   /* HYPRE_Int     **point_map_array; */
   /* HYPRE_Int     **v_at_point_array; */

   HYPRE_Real    cycle_op_count;   
   HYPRE_Int       cycle_type;
   HYPRE_Int       num_levels;
   HYPRE_Int       max_levels;

   HYPRE_Real   *num_coeffs;
   HYPRE_Int      *num_grid_sweeps;   
   HYPRE_Int      *grid_relax_type;   
   HYPRE_Int     **grid_relax_points;  
 
   /* Local variables  */

   HYPRE_Int      *lev_counter;
   HYPRE_Int       Solve_err_flag;
   HYPRE_Int       k;
   HYPRE_Int       j;
   HYPRE_Int       level;
   HYPRE_Int       cycle_param;
   HYPRE_Int       coarse_grid;
   HYPRE_Int       fine_grid;
   HYPRE_Int       Not_Finished;
   HYPRE_Int       num_sweep;
   HYPRE_Int       relax_type;
   HYPRE_Int       relax_points;
   HYPRE_Real   *relax_weight;

   HYPRE_Int       relax_local;
   HYPRE_Int       relax_order;
   HYPRE_Int       old_version = 0;


   HYPRE_Real    alpha;
   HYPRE_Real    beta;
#if 0
   HYPRE_Real   *D_mat;
   HYPRE_Real   *S_vec;
#endif
   
   /* Acquire data and allocate storage */

   A_array           = hypre_ParAMGDataAArray(amg_data);
   P_array           = hypre_ParAMGDataPArray(amg_data);
   R_array           = hypre_ParAMGDataRArray(amg_data);
   CF_marker_array   = hypre_ParAMGDataCFMarkerArray(amg_data);
   /* unknown_map_array = hypre_ParAMGDataUnknownMapArray(amg_data); */
   /* point_map_array   = hypre_ParAMGDataPointMapArray(amg_data); */
   /* v_at_point_array  = hypre_ParAMGDataVatPointArray(amg_data); */
   Vtemp             = hypre_ParAMGDataVtemp(amg_data);
   num_levels        = hypre_ParAMGDataNumLevels(amg_data);
   max_levels        = hypre_ParAMGDataMaxLevels(amg_data);
   cycle_type        = hypre_ParAMGDataCycleType(amg_data);
   /* num_unknowns      =  hypre_ParCSRMatrixNumRows(A_array[0]); */

   num_grid_sweeps     = hypre_ParAMGDataNumGridSweeps(amg_data);
   grid_relax_type     = hypre_ParAMGDataGridRelaxType(amg_data);
   grid_relax_points   = hypre_ParAMGDataGridRelaxPoints(amg_data);
   relax_weight        = hypre_ParAMGDataRelaxWeight(amg_data); 

   relax_order         = hypre_ParAMGDataRelaxOrder(amg_data);

   cycle_op_count = hypre_ParAMGDataCycleOpCount(amg_data);

   lev_counter = hypre_CTAlloc(HYPRE_Int, num_levels);

   /* Initialize */

   Solve_err_flag = 0;

   if (grid_relax_points) old_version = 1;

   num_coeffs = hypre_CTAlloc(HYPRE_Real, num_levels);
   num_coeffs[0]    = hypre_ParCSRMatrixDNumNonzeros(A_array[0]);

   for (j = 1; j < num_levels; j++)
      num_coeffs[j] = hypre_ParCSRMatrixDNumNonzeros(A_array[j]);

   /*---------------------------------------------------------------------
    *    Initialize cycling control counter
    *
    *     Cycling is controlled using a level counter: lev_counter[k]
    *     
    *     Each time relaxation is performed on level k, the
    *     counter is decremented by 1. If the counter is then
    *     negative, we go to the next finer level. If non-
    *     negative, we go to the next coarser level. The
    *     following actions control cycling:
    *     
    *     a. lev_counter[0] is initialized to 1.
    *     b. lev_counter[k] is initialized to cycle_type for k>0.
    *     
    *     c. During cycling, when going down to level k, lev_counter[k]
    *        is set to the max of (lev_counter[k],cycle_type)
    *---------------------------------------------------------------------*/

   Not_Finished = 1;

   lev_counter[0] = 1;
   for (k = 1; k < num_levels; ++k) 
   {
      lev_counter[k] = cycle_type;
   }

   level = 0;
   cycle_param = 0;

   /*---------------------------------------------------------------------
    * Main loop of cycling
    *--------------------------------------------------------------------*/
  
   while (Not_Finished)
   {
      num_sweep = num_grid_sweeps[cycle_param];
      relax_type = grid_relax_type[cycle_param];
      if (relax_type != 7 && relax_type != 9) relax_type = 7;
      /*------------------------------------------------------------------
       * Do the relaxation num_sweep times
       *-----------------------------------------------------------------*/

      for (j = 0; j < num_sweep; j++)
      {

         if (num_levels == 1 && max_levels > 1)
         {
            relax_points = 0;
            relax_local = 0;
         }
         else
         {
            if (old_version)
               relax_points = grid_relax_points[cycle_param][j];
            relax_local = relax_order;
         }

         /*-----------------------------------------------
          * VERY sloppy approximation to cycle complexity
          *-----------------------------------------------*/

         if (old_version && level < num_levels -1)
         {
            switch (relax_points)
            {
               case 1:
               cycle_op_count += num_coeffs[level+1];
               break;
  
               case -1: 
               cycle_op_count += (num_coeffs[level]-num_coeffs[level+1]); 
               break;
            }
         }
	 else
         {
            cycle_op_count += num_coeffs[level]; 
         }

         /* note: this does not use relax_points, so it doesn't matter if
            its the "old version" */
         
         Solve_err_flag = hypre_BoomerAMGRelaxT(A_array[level], 
                                                F_array[level],
                                                CF_marker_array[level],
                                                relax_type,
                                                relax_points,
                                                relax_weight[level],
                                                U_array[level],
                                                Vtemp);
        
         
         if (Solve_err_flag != 0)
         {
            hypre_TFree(lev_counter);
            hypre_TFree(num_coeffs);
            return(Solve_err_flag);
         }
      }


      /*------------------------------------------------------------------
       * Decrement the control counter and determine which grid to visit next
       *-----------------------------------------------------------------*/

      --lev_counter[level];
       
      if (lev_counter[level] >= 0 && level != num_levels-1)
      {
                               
         /*---------------------------------------------------------------
          * Visit coarser level next.  Compute residual using hypre_ParCSRMatrixMatvec.
          * Use interpolation (since transpose i.e. P^TATR instead of
          * RAP) using hypre_ParCSRMatrixMatvecT.
          * Reset counters and cycling parameters for coarse level
          *--------------------------------------------------------------*/

         fine_grid = level;
         coarse_grid = level + 1;

         hypre_ParVectorSetConstantValues(U_array[coarse_grid], 0.0);
          
         hypre_ParVectorCopy(F_array[fine_grid],Vtemp);
         alpha = -1.0;
         beta = 1.0;
         hypre_ParCSRMatrixMatvecT(alpha, A_array[fine_grid], U_array[fine_grid],
                         beta, Vtemp);

         alpha = 1.0;
         beta = 0.0;

         hypre_ParCSRMatrixMatvecT(alpha,P_array[fine_grid],Vtemp,
                          beta,F_array[coarse_grid]);

         ++level;
         lev_counter[level] = hypre_max(lev_counter[level],cycle_type);
         cycle_param = 1;
         if (level == num_levels-1) cycle_param = 3;
      }

      else if (level != 0)
      {
                            
         /*---------------------------------------------------------------
          * Visit finer level next.
          * Use restriction (since transpose i.e. P^TA^TR instead of RAP)
          * and add correction using hypre_ParCSRMatrixMatvec.
          * Reset counters and cycling parameters for finer level.
          *--------------------------------------------------------------*/

         fine_grid = level - 1;
         coarse_grid = level;
         alpha = 1.0;
         beta = 1.0;

         hypre_ParCSRMatrixMatvec(alpha, R_array[fine_grid], U_array[coarse_grid],
                         beta, U_array[fine_grid]);            
 
         --level;
         cycle_param = 2;
         if (level == 0) cycle_param = 0;
      }
      else
      {
         Not_Finished = 0;
      }
   }

   hypre_ParAMGDataCycleOpCount(amg_data) = cycle_op_count;

   hypre_TFree(lev_counter);
   hypre_TFree(num_coeffs);

   return(Solve_err_flag);
}
Esempio n. 7
0
HYPRE_Int 
hypre_MaxwellSolve2( void                * maxwell_vdata,
                     hypre_SStructMatrix * A_in,
                     hypre_SStructVector * f,
                     hypre_SStructVector * u )
{
   hypre_MaxwellData     *maxwell_data = maxwell_vdata;

   hypre_ParVector       *f_edge;
   hypre_ParVector       *u_edge;

   HYPRE_Int              max_iter     = maxwell_data-> max_iter;
   double                 tol          = maxwell_data-> tol;
   HYPRE_Int              rel_change   = maxwell_data-> rel_change;
   HYPRE_Int              zero_guess   = maxwell_data-> zero_guess;
   HYPRE_Int              npre_relax   = maxwell_data-> num_pre_relax;
   HYPRE_Int              npost_relax  = maxwell_data-> num_post_relax;

   hypre_ParCSRMatrix   **Ann_l        = maxwell_data-> Ann_l;
   hypre_ParCSRMatrix   **Pn_l         = maxwell_data-> Pn_l;
   hypre_ParCSRMatrix   **RnT_l        = maxwell_data-> RnT_l;
   hypre_ParVector      **bn_l         = maxwell_data-> bn_l;
   hypre_ParVector      **xn_l         = maxwell_data-> xn_l;
   hypre_ParVector      **resn_l       = maxwell_data-> resn_l;
   hypre_ParVector      **en_l         = maxwell_data-> en_l;
   hypre_ParVector      **nVtemp2_l    = maxwell_data-> nVtemp2_l;
   HYPRE_Int            **nCF_marker_l = maxwell_data-> nCF_marker_l;
   double                *nrelax_weight= maxwell_data-> nrelax_weight;
   double                *nomega       = maxwell_data-> nomega;
   HYPRE_Int              nrelax_type  = maxwell_data-> nrelax_type;
   HYPRE_Int              node_numlevs = maxwell_data-> node_numlevels;

   hypre_ParCSRMatrix    *Tgrad        = maxwell_data-> Tgrad;
   hypre_ParCSRMatrix    *T_transpose  = maxwell_data-> T_transpose;

   hypre_ParCSRMatrix   **Aee_l        = maxwell_data-> Aee_l;
   hypre_IJMatrix       **Pe_l         = maxwell_data-> Pe_l;
   hypre_IJMatrix       **ReT_l        = maxwell_data-> ReT_l;
   hypre_ParVector      **be_l         = maxwell_data-> be_l;
   hypre_ParVector      **xe_l         = maxwell_data-> xe_l;
   hypre_ParVector      **rese_l       = maxwell_data-> rese_l;
   hypre_ParVector      **ee_l         = maxwell_data-> ee_l;
   hypre_ParVector      **eVtemp2_l    = maxwell_data-> eVtemp2_l;
   HYPRE_Int            **eCF_marker_l = maxwell_data-> eCF_marker_l;
   double                *erelax_weight= maxwell_data-> erelax_weight;
   double                *eomega       = maxwell_data-> eomega;
   HYPRE_Int              erelax_type  = maxwell_data-> erelax_type;
   HYPRE_Int              edge_numlevs = maxwell_data-> edge_numlevels;

   HYPRE_Int            **BdryRanks_l  = maxwell_data-> BdryRanks_l;
   HYPRE_Int             *BdryRanksCnts_l= maxwell_data-> BdryRanksCnts_l;

   HYPRE_Int              logging      = maxwell_data-> logging;
   double                *norms        = maxwell_data-> norms;
   double                *rel_norms    = maxwell_data-> rel_norms;

   HYPRE_Int              Solve_err_flag;
   HYPRE_Int              relax_local, cycle_param;
                                                                                                            
   double                 b_dot_b = 0, r_dot_r, eps = 0;
   double                 e_dot_e, x_dot_x;

   HYPRE_Int              i, j;
   HYPRE_Int              level;

   HYPRE_Int              ierr= 0;

   
   /* added for the relaxation routines */
   hypre_ParVector *ze = NULL;

   if (hypre_NumThreads() > 1)
   {
      /* Aee is always bigger than Ann */

      ze = hypre_ParVectorCreate(hypre_ParCSRMatrixComm(Aee_l[0]),
                                hypre_ParCSRMatrixGlobalNumRows(Aee_l[0]),
                                hypre_ParCSRMatrixRowStarts(Aee_l[0]));
      hypre_ParVectorInitialize(ze);
      hypre_ParVectorSetPartitioningOwner(ze,0);

   }

   hypre_BeginTiming(maxwell_data-> time_index);

   hypre_SStructVectorConvert(f, &f_edge);
   hypre_SStructVectorConvert(u, &u_edge);
   hypre_ParVectorZeroBCValues(f_edge, BdryRanks_l[0], BdryRanksCnts_l[0]);
   hypre_ParVectorZeroBCValues(u_edge, BdryRanks_l[0], BdryRanksCnts_l[0]);
   be_l[0]= f_edge;
   xe_l[0]= u_edge;

  /* the nodal fine vectors: xn= 0. bn= T'*(be- Aee*xe) is updated in the cycle. */
   hypre_ParVectorSetConstantValues(xn_l[0], 0.0);

   relax_local= 0;
   cycle_param= 0;

  (maxwell_data-> num_iterations) = 0;
  /* if max_iter is zero, return */
   if (max_iter == 0)
   {
      /* if using a zero initial guess, return zero */
      if (zero_guess)
      {
         hypre_ParVectorSetConstantValues(xe_l[0], 0.0);
      }
                                                                                                            
      hypre_EndTiming(maxwell_data -> time_index);
      return ierr;
   }
                                                                                                            
   /* part of convergence check */
   if (tol > 0.0)
   {
      /* eps = (tol^2) */
      b_dot_b= hypre_ParVectorInnerProd(be_l[0], be_l[0]);
      eps = tol*tol;
                                                                                                            
      /* if rhs is zero, return a zero solution */
      if (b_dot_b == 0.0)
      {
         hypre_ParVectorSetConstantValues(xe_l[0], 0.0);
         if (logging > 0)
         {
            norms[0]     = 0.0;
            rel_norms[0] = 0.0;
         }
                                                                                                            
         hypre_EndTiming(maxwell_data -> time_index);
         return ierr;
      }
   }

   /*-----------------------------------------------------
    * Do V-cycles:
    * For each index l, "fine" = l, "coarse" = (l-1)
    *   
    *   solution update:
    *      edge_sol= edge_sol + T*node_sol
    *-----------------------------------------------------*/
   for (i = 0; i < max_iter; i++)
   {
     /* compute fine grid residual & nodal rhs. */
      hypre_ParVectorCopy(be_l[0], rese_l[0]);
      hypre_ParCSRMatrixMatvec(-1.0, Aee_l[0], xe_l[0], 1.0, rese_l[0]);
      hypre_ParVectorZeroBCValues(rese_l[0], BdryRanks_l[0], BdryRanksCnts_l[0]);
      hypre_ParCSRMatrixMatvec(1.0, T_transpose, rese_l[0], 0.0, bn_l[0]);

      /* convergence check */
      if (tol > 0.0)
      {
         r_dot_r= hypre_ParVectorInnerProd(rese_l[0], rese_l[0]);

         if (logging > 0)
         {
            norms[i] = sqrt(r_dot_r);
            if (b_dot_b > 0)
               rel_norms[i] = sqrt(r_dot_r/b_dot_b);
            else
               rel_norms[i] = 0.0;
         }
                                                                                                            
         /* always do at least 1 V-cycle */
         if ((r_dot_r/b_dot_b < eps) && (i > 0))
         {
            if (rel_change)
            {
               if ((e_dot_e/x_dot_x) < eps)
                  break;
            }
            else
            {
               break;
            }
         }
      }

      hypre_ParVectorCopy(bn_l[0], resn_l[0]);
      hypre_ParCSRMatrixMatvec(-1.0, Ann_l[0], xn_l[0], 1.0, resn_l[0]);
      r_dot_r= hypre_ParVectorInnerProd(resn_l[0], resn_l[0]);

      for (level= 0; level<= node_numlevs-2; level++)
      {
         /*-----------------------------------------------
          * Down cycle
          *-----------------------------------------------*/
          for (j= 0; j< npre_relax; j++)
          {
             Solve_err_flag = hypre_BoomerAMGRelaxIF(Ann_l[level],
                                                     bn_l[level],
                                                     nCF_marker_l[level],
                                                     nrelax_type,
                                                     relax_local,
                                                     cycle_param,
                                                     nrelax_weight[level],
                                                     nomega[level],
                                                     NULL,
                                                     xn_l[level],
                                                     nVtemp2_l[level],
                                                     ze);
          }  /*for (j= 0; j< npre_relax; j++) */

         /* compute residuals */
          hypre_ParVectorCopy(bn_l[level], resn_l[level]);
          hypre_ParCSRMatrixMatvec(-1.0, Ann_l[level], xn_l[level], 
                                    1.0, resn_l[level]);

         /* restrict residuals */
          hypre_ParCSRMatrixMatvecT(1.0, RnT_l[level], resn_l[level],
                                    0.0, bn_l[level+1]);

         /* zero off initial guess for the next level */
          hypre_ParVectorSetConstantValues(xn_l[level+1], 0.0);

      }  /* for (level= 0; level<= node_numlevs-2; level++) */
 
      /* coarsest node solve */
      level= node_numlevs-1;
      Solve_err_flag = hypre_BoomerAMGRelaxIF(Ann_l[level],
                                              bn_l[level],
                                              nCF_marker_l[level],
                                              nrelax_type,
                                              relax_local,
                                              cycle_param,
                                              nrelax_weight[level],
                                              nomega[level],
                                              NULL,
                                              xn_l[level],
                                              nVtemp2_l[level],
                                              ze);

     /*---------------------------------------------------------------------
      *  Cycle up the levels.
      *---------------------------------------------------------------------*/
      for (level= (node_numlevs - 2); level>= 1; level--)
      {
          hypre_ParCSRMatrixMatvec(1.0, Pn_l[level], xn_l[level+1], 0.0,
                                   en_l[level]);
          hypre_ParVectorAxpy(1.0, en_l[level], xn_l[level]);

         /* post smooth */
          for (j= 0; j< npost_relax; j++)
          {
             Solve_err_flag = hypre_BoomerAMGRelaxIF(Ann_l[level],
                                                     bn_l[level],
                                                     nCF_marker_l[level],
                                                     nrelax_type,
                                                     relax_local,
                                                     cycle_param,
                                                     nrelax_weight[level],
                                                     nomega[level],
                                                     NULL,
                                                     xn_l[level],
                                                     nVtemp2_l[level],
                                                     ze);
          }
      }   /* for (level= (en_numlevs - 2); level>= 1; level--) */

      /* interpolate error and correct on finest grids */
      hypre_ParCSRMatrixMatvec(1.0, Pn_l[0], xn_l[1], 0.0, en_l[0]);
      hypre_ParVectorAxpy(1.0, en_l[0], xn_l[0]);
                                                                                                              
      for (j= 0; j< npost_relax; j++)
      {
         Solve_err_flag = hypre_BoomerAMGRelaxIF(Ann_l[0],
                                                 bn_l[0],
                                                 nCF_marker_l[0],
                                                 nrelax_type,
                                                 relax_local,
                                                 cycle_param,
                                                 nrelax_weight[0],
                                                 nomega[0],
                                                 NULL,
                                                 xn_l[0],
                                                 nVtemp2_l[0],
                                                 ze);
      }  /* for (j= 0; j< npost_relax; j++) */
      hypre_ParVectorCopy(bn_l[0], resn_l[0]);
      hypre_ParCSRMatrixMatvec(-1.0, Ann_l[0], xn_l[0], 1.0, resn_l[0]);

      /* add the gradient solution component to xe_l[0] */
      hypre_ParCSRMatrixMatvec(1.0, Tgrad, xn_l[0], 1.0, xe_l[0]);

      hypre_ParVectorCopy(be_l[0], rese_l[0]);
      hypre_ParCSRMatrixMatvec(-1.0, Aee_l[0], xe_l[0], 1.0, rese_l[0]);
      r_dot_r= hypre_ParVectorInnerProd(rese_l[0], rese_l[0]);

      for (level= 0; level<= edge_numlevs-2; level++)
      {
         /*-----------------------------------------------
          * Down cycle
          *-----------------------------------------------*/
          for (j= 0; j< npre_relax; j++)
          {
             Solve_err_flag = hypre_BoomerAMGRelaxIF(Aee_l[level],
                                                     be_l[level],
                                                     eCF_marker_l[level],
                                                     erelax_type,
                                                     relax_local,
                                                     cycle_param,
                                                     erelax_weight[level],
                                                     eomega[level],
                                                     NULL,
                                                     xe_l[level],
                                                     eVtemp2_l[level], 
                                                     ze);
          }  /*for (j= 0; j< npre_relax; j++) */
                                                                                                              
         /* compute residuals */
          hypre_ParVectorCopy(be_l[level], rese_l[level]);
          hypre_ParCSRMatrixMatvec(-1.0, Aee_l[level], xe_l[level],
                                    1.0, rese_l[level]);

         /* restrict residuals */
          hypre_ParCSRMatrixMatvecT(1.0,
             (hypre_ParCSRMatrix *) hypre_IJMatrixObject(ReT_l[level]),
                                    rese_l[level], 0.0, be_l[level+1]);
          hypre_ParVectorZeroBCValues(be_l[level+1], BdryRanks_l[level+1],
                                      BdryRanksCnts_l[level+1]);

         /* zero off initial guess for the next level */
          hypre_ParVectorSetConstantValues(xe_l[level+1], 0.0);
                                                                                                              
      }  /* for (level= 1; level<= edge_numlevels-2; level++) */
                                                                                                              
      /* coarsest edge solve */
      level= edge_numlevs-1;
      for (j= 0; j< npre_relax; j++)
      {
         Solve_err_flag = hypre_BoomerAMGRelaxIF(Aee_l[level],
                                                 be_l[level],
                                                 eCF_marker_l[level],
                                                 erelax_type,
                                                 relax_local,
                                                 cycle_param,
                                                 erelax_weight[level],
                                                 eomega[level],
                                                 NULL,
                                                 xe_l[level],
                                                 eVtemp2_l[level], 
                                                 ze);
      }

     /*---------------------------------------------------------------------
      *  Up cycle. 
      *---------------------------------------------------------------------*/
      for (level= (edge_numlevs - 2); level>= 1; level--)
      {
         hypre_ParCSRMatrixMatvec(1.0, 
           (hypre_ParCSRMatrix *) hypre_IJMatrixObject(Pe_l[level]), 
                                  xe_l[level+1], 0.0, ee_l[level]);
         hypre_ParVectorZeroBCValues(ee_l[level], BdryRanks_l[level],
                                     BdryRanksCnts_l[level]);
         hypre_ParVectorAxpy(1.0, ee_l[level], xe_l[level]);

         /* post smooth */
         for (j= 0; j< npost_relax; j++)
         {
            Solve_err_flag = hypre_BoomerAMGRelaxIF(Aee_l[level],
                                                    be_l[level],
                                                    eCF_marker_l[level],
                                                    erelax_type,
                                                    relax_local,
                                                    cycle_param,
                                                    erelax_weight[level],
                                                    eomega[level],
                                                    NULL,
                                                    xe_l[level],
                                                    eVtemp2_l[level], 
                                                    ze);
         }

      }  /* for (level= (edge_numlevs - 2); level>= 1; level--) */

      /* interpolate error and correct on finest grids */
      hypre_ParCSRMatrixMatvec(1.0, 
        (hypre_ParCSRMatrix *) hypre_IJMatrixObject(Pe_l[0]), 
                               xe_l[1], 0.0, ee_l[0]);
      hypre_ParVectorZeroBCValues(ee_l[0], BdryRanks_l[0],
                                  BdryRanksCnts_l[0]);
      hypre_ParVectorAxpy(1.0, ee_l[0], xe_l[0]);

      for (j= 0; j< npost_relax; j++)
      {
         Solve_err_flag = hypre_BoomerAMGRelaxIF(Aee_l[0],
                                                 be_l[0],
                                                 eCF_marker_l[0],
                                                 erelax_type,
                                                 relax_local,
                                                 cycle_param,
                                                 erelax_weight[0],
                                                 eomega[0],
                                                 NULL,
                                                 xe_l[0],
                                                 eVtemp2_l[0],
                                                 ze);
      }  /* for (j= 0; j< npost_relax; j++) */

      e_dot_e= hypre_ParVectorInnerProd(ee_l[0], ee_l[0]);
      x_dot_x= hypre_ParVectorInnerProd(xe_l[0], xe_l[0]);

      hypre_ParVectorCopy(be_l[0], rese_l[0]);
      hypre_ParCSRMatrixMatvec(-1.0, Aee_l[0], xe_l[0], 1.0, rese_l[0]);

      (maxwell_data -> num_iterations) = (i + 1);
   }

   hypre_EndTiming(maxwell_data -> time_index);


   if (ze)
      hypre_ParVectorDestroy(ze);

   return ierr;
}
Esempio n. 8
0
HYPRE_Int
hypre_BoomerAMGCycle( void              *amg_vdata, 
                   hypre_ParVector  **F_array,
                   hypre_ParVector  **U_array   )
{
   hypre_ParAMGData *amg_data = amg_vdata;

   HYPRE_Solver *smoother;
   /* Data Structure variables */

   hypre_ParCSRMatrix    **A_array;
   hypre_ParCSRMatrix    **P_array;
   hypre_ParCSRMatrix    **R_array;
   hypre_ParVector    *Utemp;
   hypre_ParVector    *Vtemp;
   hypre_ParVector    *Rtemp;
   hypre_ParVector    *Ptemp;
   hypre_ParVector    *Ztemp;
   hypre_ParVector    *Aux_U;
   hypre_ParVector    *Aux_F;

   hypre_ParCSRBlockMatrix    **A_block_array;
   hypre_ParCSRBlockMatrix    **P_block_array;
   hypre_ParCSRBlockMatrix    **R_block_array;

   HYPRE_Real   *Ztemp_data;
   HYPRE_Real   *Ptemp_data;
   HYPRE_Int     **CF_marker_array;
   /* HYPRE_Int     **unknown_map_array;
   HYPRE_Int     **point_map_array;
   HYPRE_Int     **v_at_point_array; */

   HYPRE_Real    cycle_op_count;   
   HYPRE_Int       cycle_type;
   HYPRE_Int       num_levels;
   HYPRE_Int       max_levels;

   HYPRE_Real   *num_coeffs;
   HYPRE_Int      *num_grid_sweeps;   
   HYPRE_Int      *grid_relax_type;   
   HYPRE_Int     **grid_relax_points;  

   HYPRE_Int     block_mode;
   
   HYPRE_Real  *max_eig_est;
   HYPRE_Real  *min_eig_est;
   HYPRE_Int      cheby_order;
   HYPRE_Real   cheby_fraction;

 /* Local variables  */ 
   HYPRE_Int      *lev_counter;
   HYPRE_Int       Solve_err_flag;
   HYPRE_Int       k;
   HYPRE_Int       i, j, jj;
   HYPRE_Int       level;
   HYPRE_Int       cycle_param;
   HYPRE_Int       coarse_grid;
   HYPRE_Int       fine_grid;
   HYPRE_Int       Not_Finished;
   HYPRE_Int       num_sweep;
   HYPRE_Int       cg_num_sweep = 1;
   HYPRE_Int       relax_type;
   HYPRE_Int       relax_points;
   HYPRE_Int       relax_order;
   HYPRE_Int       relax_local;
   HYPRE_Int       old_version = 0;
   HYPRE_Real   *relax_weight;
   HYPRE_Real   *omega;
   HYPRE_Real    alfa, beta, gammaold;
   HYPRE_Real    gamma = 1.0;
   HYPRE_Int       local_size;
/*   HYPRE_Int      *smooth_option; */
   HYPRE_Int       smooth_type;
   HYPRE_Int       smooth_num_levels;
   HYPRE_Int       num_threads, my_id;

   HYPRE_Real    alpha;
   HYPRE_Real  **l1_norms = NULL;
   HYPRE_Real   *l1_norms_level;

   HYPRE_Int seq_cg = 0;

   MPI_Comm comm;

#if 0
   HYPRE_Real   *D_mat;
   HYPRE_Real   *S_vec;
#endif
   
   /* Acquire data and allocate storage */

   num_threads = hypre_NumThreads();

   A_array           = hypre_ParAMGDataAArray(amg_data);
   P_array           = hypre_ParAMGDataPArray(amg_data);
   R_array           = hypre_ParAMGDataRArray(amg_data);
   CF_marker_array   = hypre_ParAMGDataCFMarkerArray(amg_data);
   Vtemp             = hypre_ParAMGDataVtemp(amg_data);
   Rtemp             = hypre_ParAMGDataRtemp(amg_data);
   Ptemp             = hypre_ParAMGDataPtemp(amg_data);
   Ztemp             = hypre_ParAMGDataZtemp(amg_data);
   num_levels        = hypre_ParAMGDataNumLevels(amg_data);
   max_levels        = hypre_ParAMGDataMaxLevels(amg_data);
   cycle_type        = hypre_ParAMGDataCycleType(amg_data);

   A_block_array     = hypre_ParAMGDataABlockArray(amg_data);
   P_block_array     = hypre_ParAMGDataPBlockArray(amg_data);
   R_block_array     = hypre_ParAMGDataRBlockArray(amg_data);
   block_mode        = hypre_ParAMGDataBlockMode(amg_data);

   num_grid_sweeps     = hypre_ParAMGDataNumGridSweeps(amg_data);
   grid_relax_type     = hypre_ParAMGDataGridRelaxType(amg_data);
   grid_relax_points   = hypre_ParAMGDataGridRelaxPoints(amg_data);
   relax_order         = hypre_ParAMGDataRelaxOrder(amg_data);
   relax_weight        = hypre_ParAMGDataRelaxWeight(amg_data); 
   omega               = hypre_ParAMGDataOmega(amg_data); 
   smooth_type         = hypre_ParAMGDataSmoothType(amg_data); 
   smooth_num_levels   = hypre_ParAMGDataSmoothNumLevels(amg_data); 
   l1_norms            = hypre_ParAMGDataL1Norms(amg_data); 
   /* smooth_option       = hypre_ParAMGDataSmoothOption(amg_data); */

   max_eig_est = hypre_ParAMGDataMaxEigEst(amg_data);
   min_eig_est = hypre_ParAMGDataMinEigEst(amg_data);
   cheby_order = hypre_ParAMGDataChebyOrder(amg_data);
   cheby_fraction = hypre_ParAMGDataChebyFraction(amg_data);

   cycle_op_count = hypre_ParAMGDataCycleOpCount(amg_data);

   lev_counter = hypre_CTAlloc(HYPRE_Int, num_levels);

   if (hypre_ParAMGDataParticipate(amg_data)) seq_cg = 1;

   /* Initialize */

   Solve_err_flag = 0;

   if (grid_relax_points) old_version = 1;

   num_coeffs = hypre_CTAlloc(HYPRE_Real, num_levels);
   num_coeffs[0]    = hypre_ParCSRMatrixDNumNonzeros(A_array[0]);
   comm = hypre_ParCSRMatrixComm(A_array[0]);
   hypre_MPI_Comm_rank(comm,&my_id);

   if (block_mode)
   {
      for (j = 1; j < num_levels; j++)
         num_coeffs[j] = hypre_ParCSRBlockMatrixNumNonzeros(A_block_array[j]);
      
   }
   else 
   {
       for (j = 1; j < num_levels; j++)
         num_coeffs[j] = hypre_ParCSRMatrixDNumNonzeros(A_array[j]);
   }
   
   /*---------------------------------------------------------------------
    *    Initialize cycling control counter
    *
    *     Cycling is controlled using a level counter: lev_counter[k]
    *     
    *     Each time relaxation is performed on level k, the
    *     counter is decremented by 1. If the counter is then
    *     negative, we go to the next finer level. If non-
    *     negative, we go to the next coarser level. The
    *     following actions control cycling:
    *     
    *     a. lev_counter[0] is initialized to 1.
    *     b. lev_counter[k] is initialized to cycle_type for k>0.
    *     
    *     c. During cycling, when going down to level k, lev_counter[k]
    *        is set to the max of (lev_counter[k],cycle_type)
    *---------------------------------------------------------------------*/

   Not_Finished = 1;

   lev_counter[0] = 1;
   for (k = 1; k < num_levels; ++k) 
   {
      lev_counter[k] = cycle_type;
   }

   level = 0;
   cycle_param = 1;

   smoother = hypre_ParAMGDataSmoother(amg_data);

   if (smooth_num_levels > 0)
   {
      if (smooth_type == 7 || smooth_type == 8
          || smooth_type == 17 || smooth_type == 18
          || smooth_type == 9 || smooth_type == 19)
      {
         HYPRE_Int actual_local_size = hypre_ParVectorActualLocalSize(Vtemp);
         Utemp = hypre_ParVectorCreate(comm,hypre_ParVectorGlobalSize(Vtemp),
                        hypre_ParVectorPartitioning(Vtemp));
         hypre_ParVectorOwnsPartitioning(Utemp) = 0;
         local_size 
            = hypre_VectorSize(hypre_ParVectorLocalVector(Vtemp));
         if (local_size < actual_local_size)
         {
            hypre_VectorData(hypre_ParVectorLocalVector(Utemp)) =
	 	hypre_CTAlloc(HYPRE_Complex, actual_local_size);
            hypre_ParVectorActualLocalSize(Utemp) = actual_local_size;
         }
         else
	     hypre_ParVectorInitialize(Utemp);
      }
   }
   
  
   /*---------------------------------------------------------------------
    * Main loop of cycling
    *--------------------------------------------------------------------*/
  
   while (Not_Finished)
   {
      if (num_levels > 1) 
      {
        local_size 
            = hypre_VectorSize(hypre_ParVectorLocalVector(F_array[level]));
        hypre_VectorSize(hypre_ParVectorLocalVector(Vtemp)) = local_size;
        if (smooth_num_levels <= level)
	{
           cg_num_sweep = 1;
           num_sweep = num_grid_sweeps[cycle_param];
           Aux_U = U_array[level];
           Aux_F = F_array[level];
	}
	else if (smooth_type > 9)
	{
           hypre_VectorSize(hypre_ParVectorLocalVector(Ztemp)) = local_size;
           hypre_VectorSize(hypre_ParVectorLocalVector(Rtemp)) = local_size;
           hypre_VectorSize(hypre_ParVectorLocalVector(Ptemp)) = local_size;
           Ztemp_data = hypre_VectorData(hypre_ParVectorLocalVector(Ztemp));
           Ptemp_data = hypre_VectorData(hypre_ParVectorLocalVector(Ptemp));
           hypre_ParVectorSetConstantValues(Ztemp,0);
           alpha = -1.0;
           beta = 1.0;
           hypre_ParCSRMatrixMatvecOutOfPlace(alpha, A_array[level], 
                                U_array[level], beta, F_array[level], Rtemp);
	   cg_num_sweep = hypre_ParAMGDataSmoothNumSweeps(amg_data);
           num_sweep = num_grid_sweeps[cycle_param];
           Aux_U = Ztemp;
           Aux_F = Rtemp;
	}
	else 
	{
           cg_num_sweep = 1;
	   num_sweep = hypre_ParAMGDataSmoothNumSweeps(amg_data);
           Aux_U = U_array[level];
           Aux_F = F_array[level];
	}
        relax_type = grid_relax_type[cycle_param];
      }
      else /* AB: 4/08: removed the max_levels > 1 check - should do this when max-levels = 1 also */
      {
        /* If no coarsening occurred, apply a simple smoother once */
        Aux_U = U_array[level];
        Aux_F = F_array[level];
        num_sweep = 1;
        /* TK: Use the user relax type (instead of 0) to allow for setting a
           convergent smoother (e.g. in the solution of singular problems). */
        relax_type = hypre_ParAMGDataUserRelaxType(amg_data);
      }

      if (l1_norms != NULL)
         l1_norms_level = l1_norms[level];
      else
         l1_norms_level = NULL;

      if (cycle_param == 3 && seq_cg)
      {
         hypre_seqAMGCycle(amg_data, level, F_array, U_array);
      }
      else
      {
         
        /*------------------------------------------------------------------
         * Do the relaxation num_sweep times
         *-----------------------------------------------------------------*/
         for (jj = 0; jj < cg_num_sweep; jj++)
         {
	   if (smooth_num_levels > level && smooth_type > 9)
              hypre_ParVectorSetConstantValues(Aux_U,0);

           for (j = 0; j < num_sweep; j++)
           {
              if (num_levels == 1 && max_levels > 1)
              {
                 relax_points = 0;
                 relax_local = 0;
              }
              else
              {
                 if (old_version)
		    relax_points = grid_relax_points[cycle_param][j];
                 relax_local = relax_order;
              }

              /*-----------------------------------------------
               * VERY sloppy approximation to cycle complexity
               *-----------------------------------------------*/
              if (old_version && level < num_levels -1)
              {
                 switch (relax_points)
                 {
                    case 1:
                    cycle_op_count += num_coeffs[level+1];
                    break;
  
                    case -1: 
                    cycle_op_count += (num_coeffs[level]-num_coeffs[level+1]); 
                    break;
                 }
              }
	      else
              {
                 cycle_op_count += num_coeffs[level]; 
              }
              /*-----------------------------------------------
                Choose Smoother
                -----------------------------------------------*/

              if (smooth_num_levels > level && 
			(smooth_type == 7 || smooth_type == 8 ||
			smooth_type == 9 || smooth_type == 19 ||
			smooth_type == 17 || smooth_type == 18))
              {
                 hypre_VectorSize(hypre_ParVectorLocalVector(Utemp)) = local_size;
                 alpha = -1.0;
                 beta = 1.0;
                 hypre_ParCSRMatrixMatvecOutOfPlace(alpha, A_array[level], 
                                U_array[level], beta, Aux_F, Vtemp);
                 if (smooth_type == 8 || smooth_type == 18)
                    HYPRE_ParCSRParaSailsSolve(smoother[level],
                                 (HYPRE_ParCSRMatrix) A_array[level],
                                 (HYPRE_ParVector) Vtemp,
                                 (HYPRE_ParVector) Utemp);
                 else if (smooth_type == 7 || smooth_type == 17)
                    HYPRE_ParCSRPilutSolve(smoother[level],
                                 (HYPRE_ParCSRMatrix) A_array[level],
                                 (HYPRE_ParVector) Vtemp,
                                 (HYPRE_ParVector) Utemp);
                 else if (smooth_type == 9 || smooth_type == 19)
                    HYPRE_EuclidSolve(smoother[level],
                                 (HYPRE_ParCSRMatrix) A_array[level],
                                 (HYPRE_ParVector) Vtemp,
                                 (HYPRE_ParVector) Utemp);
                 hypre_ParVectorAxpy(relax_weight[level],Utemp,Aux_U);
	      }
              else if (smooth_num_levels > level &&
			(smooth_type == 6 || smooth_type == 16))
              {
                 HYPRE_SchwarzSolve(smoother[level],
                                 (HYPRE_ParCSRMatrix) A_array[level],
                                 (HYPRE_ParVector) Aux_F,
                                  (HYPRE_ParVector) Aux_U);
              }
              /*else if (relax_type == 99)*/
              else if (relax_type == 9 || relax_type == 99)
              { /* Gaussian elimination */
                 hypre_GaussElimSolve(amg_data, level, relax_type);
              }
              else if (relax_type == 18)
              {   /* L1 - Jacobi*/
                 if (relax_order == 1 && cycle_param < 3)
                 {
                    /* need to do CF - so can't use the AMS one */
                    HYPRE_Int i;
                    HYPRE_Int loc_relax_points[2];
                    if (cycle_type < 2)
                    {
                       loc_relax_points[0] = 1;
                       loc_relax_points[1] = -1;
                    }
                    else
                    {
                       loc_relax_points[0] = -1;
                       loc_relax_points[1] = 1;
                    }
                    for (i=0; i < 2; i++)
                       hypre_ParCSRRelax_L1_Jacobi(A_array[level],
                                                 Aux_F,
                                                 CF_marker_array[level],
                                                 loc_relax_points[i],
                                                 relax_weight[level],
                                                 l1_norms[level],
                                                 Aux_U,
                                                 Vtemp);
                 }
                 else /* not CF - so use through AMS */
                 {
                    if (num_threads == 1)
                       hypre_ParCSRRelax(A_array[level], 
                                       Aux_F,
                                       1,
                                       1,
                                       l1_norms_level,
                                       relax_weight[level],
                                       omega[level],0,0,0,0,
                                       Aux_U,
                                       Vtemp, 
                                       Ztemp);

                    else
                       hypre_ParCSRRelaxThreads(A_array[level], 
                                              Aux_F,
                                              1,
                                              1,
                                              l1_norms_level,
                                              relax_weight[level],
                                              omega[level],
                                              Aux_U,
                                              Vtemp,
                                              Ztemp);
                 }
              }
              else if (relax_type == 15)
              {  /* CG */
                 if (j ==0) /* do num sweep iterations of CG */
                    hypre_ParCSRRelax_CG( smoother[level],
                                        A_array[level], 
                                        Aux_F,      
                                        Aux_U,
                                        num_sweep);
              }
              else if (relax_type == 16)
              { /* scaled Chebyshev */
                 HYPRE_Int scale = 1;
                 HYPRE_Int variant = 0;
                 hypre_ParCSRRelax_Cheby(A_array[level], 
                                       Aux_F,
                                       max_eig_est[level],     
                                       min_eig_est[level],     
                                       cheby_fraction, cheby_order, scale,
                                       variant, Aux_U, Vtemp, Ztemp );
              }
              else if (relax_type ==17)
              {
                 hypre_BoomerAMGRelax_FCFJacobi(A_array[level], 
                                              Aux_F,
                                              CF_marker_array[level],
                                              relax_weight[level],
                                              Aux_U,
                                              Vtemp);
              }
	      else if (old_version)
	      {
                 Solve_err_flag = hypre_BoomerAMGRelax(A_array[level], 
                                                     Aux_F,
                                                     CF_marker_array[level],
                                                     relax_type, relax_points,
                                                     relax_weight[level],
                                                     omega[level],
                                                     l1_norms_level,
                                                     Aux_U,
                                                     Vtemp, 
                                                     Ztemp);
	      }
	      else 
	      {
                 /* smoother than can have CF ordering */
                 if (block_mode)
                 {
                     Solve_err_flag = hypre_BoomerAMGBlockRelaxIF(A_block_array[level], 
                                                                  Aux_F,
                                                                  CF_marker_array[level],
                                                                  relax_type,
                                                                  relax_local,
                                                                  cycle_param,
                                                                  relax_weight[level],
                                                                  omega[level],
                                                                  Aux_U,
                                                                  Vtemp);
                 }
                 else
                 {
                    Solve_err_flag = hypre_BoomerAMGRelaxIF(A_array[level], 
                                                          Aux_F,
                                                          CF_marker_array[level],
                                                          relax_type,
                                                          relax_local,
                                                          cycle_param,
                                                          relax_weight[level],
                                                          omega[level],
                                                          l1_norms_level,
                                                          Aux_U,
                                                          Vtemp, 
                                                          Ztemp);
                 }
	      }
 
              if (Solve_err_flag != 0)
                 return(Solve_err_flag);
           }
           if  (smooth_num_levels > level && smooth_type > 9)
           {
              gammaold = gamma;
              gamma = hypre_ParVectorInnerProd(Rtemp,Ztemp);
              if (jj == 0)
                 hypre_ParVectorCopy(Ztemp,Ptemp);
              else
              {
                 beta = gamma/gammaold;
                 for (i=0; i < local_size; i++)
		    Ptemp_data[i] = Ztemp_data[i] + beta*Ptemp_data[i];
              }
              hypre_ParCSRMatrixMatvec(1.0,A_array[level],Ptemp,0.0,Vtemp);
              alfa = gamma /hypre_ParVectorInnerProd(Ptemp,Vtemp);
              hypre_ParVectorAxpy(alfa,Ptemp,U_array[level]);
              hypre_ParVectorAxpy(-alfa,Vtemp,Rtemp);
           }
        }
      }

      /*------------------------------------------------------------------
       * Decrement the control counter and determine which grid to visit next
       *-----------------------------------------------------------------*/

      --lev_counter[level];
       
      if (lev_counter[level] >= 0 && level != num_levels-1)
      {
                               
         /*---------------------------------------------------------------
          * Visit coarser level next.  
 	  * Compute residual using hypre_ParCSRMatrixMatvec.
          * Perform restriction using hypre_ParCSRMatrixMatvecT.
          * Reset counters and cycling parameters for coarse level
          *--------------------------------------------------------------*/

         fine_grid = level;
         coarse_grid = level + 1;

         hypre_ParVectorSetConstantValues(U_array[coarse_grid], 0.0); 
          
         alpha = -1.0;
         beta = 1.0;

         if (block_mode)
         {
            hypre_ParVectorCopy(F_array[fine_grid],Vtemp);
            hypre_ParCSRBlockMatrixMatvec(alpha, A_block_array[fine_grid], U_array[fine_grid],
                                          beta, Vtemp);
         }
         else 
         {
            // JSP: avoid unnecessary copy using out-of-place version of SpMV
            hypre_ParCSRMatrixMatvecOutOfPlace(alpha, A_array[fine_grid], U_array[fine_grid],
                                               beta, F_array[fine_grid], Vtemp);
         }

         alpha = 1.0;
         beta = 0.0;

         if (block_mode)
         {
            hypre_ParCSRBlockMatrixMatvecT(alpha,R_block_array[fine_grid],Vtemp,
                                      beta,F_array[coarse_grid]);
         }
         else
         {
            hypre_ParCSRMatrixMatvecT(alpha,R_array[fine_grid],Vtemp,
                                      beta,F_array[coarse_grid]);
         }

         ++level;
         lev_counter[level] = hypre_max(lev_counter[level],cycle_type);
         cycle_param = 1;
         if (level == num_levels-1) cycle_param = 3;
      }

      else if (level != 0)
      {
         /*---------------------------------------------------------------
          * Visit finer level next.
          * Interpolate and add correction using hypre_ParCSRMatrixMatvec.
          * Reset counters and cycling parameters for finer level.
          *--------------------------------------------------------------*/

         fine_grid = level - 1;
         coarse_grid = level;
         alpha = 1.0;
         beta = 1.0;
         if (block_mode)
         {
            hypre_ParCSRBlockMatrixMatvec(alpha, P_block_array[fine_grid], 
                                     U_array[coarse_grid],
                                     beta, U_array[fine_grid]);   
         }
         else 
         {
            hypre_ParCSRMatrixMatvec(alpha, P_array[fine_grid], 
                                     U_array[coarse_grid],
                                     beta, U_array[fine_grid]);            
         }
         
         --level;
         cycle_param = 2;
      }
      else
      {
         Not_Finished = 0;
      }
   }

   hypre_ParAMGDataCycleOpCount(amg_data) = cycle_op_count;

   hypre_TFree(lev_counter);
   hypre_TFree(num_coeffs);
   if (smooth_num_levels > 0)
   {
     if (smooth_type == 7 || smooth_type == 8 || smooth_type == 9 || 
	smooth_type == 17 || smooth_type == 18 || smooth_type == 19 )
        hypre_ParVectorDestroy(Utemp);
   }
   return(Solve_err_flag);
}
Esempio n. 9
0
HYPRE_Int
hypre_BoomerAMGAdditiveCycle( void              *amg_vdata)
{
   hypre_ParAMGData *amg_data = amg_vdata;

   /* Data Structure variables */

   hypre_ParCSRMatrix    **A_array;
   hypre_ParCSRMatrix    **P_array;
   hypre_ParCSRMatrix    **R_array;
   hypre_ParCSRMatrix    *Lambda;
   hypre_ParVector    **F_array;
   hypre_ParVector    **U_array;
   hypre_ParVector    *Vtemp;
   hypre_ParVector    *Ztemp;
   hypre_ParVector    *Xtilde, *Rtilde;
   HYPRE_Int      **CF_marker_array;

   HYPRE_Int       num_levels;
   HYPRE_Int       addlvl;
   HYPRE_Int       additive;
   HYPRE_Int       mult_additive;
   HYPRE_Int       simple;
   HYPRE_Int       i, num_rows;
   HYPRE_Int       n_global;
   HYPRE_Int       rlx_order;

 /* Local variables  */ 
   HYPRE_Int       Solve_err_flag = 0;
   HYPRE_Int       level;
   HYPRE_Int       coarse_grid;
   HYPRE_Int       fine_grid;
   HYPRE_Int       relax_type;
   HYPRE_Int       rlx_down;
   HYPRE_Int       rlx_up;
   HYPRE_Int      *grid_relax_type;
   HYPRE_Real      **l1_norms;
   HYPRE_Real    alpha, beta;
   HYPRE_Int       num_threads;
   HYPRE_Real *u_data;
   HYPRE_Real *f_data;
   HYPRE_Real *v_data;
   HYPRE_Real *l1_norms_lvl;
   HYPRE_Real *D_inv;
   HYPRE_Real *x_global;
   HYPRE_Real *r_global;
   HYPRE_Real *relax_weight;
   HYPRE_Real *omega;

#if 0
   HYPRE_Real   *D_mat;
   HYPRE_Real   *S_vec;
#endif
   
   /* Acquire data and allocate storage */

   num_threads = hypre_NumThreads();

   A_array           = hypre_ParAMGDataAArray(amg_data);
   F_array           = hypre_ParAMGDataFArray(amg_data);
   U_array           = hypre_ParAMGDataUArray(amg_data);
   P_array           = hypre_ParAMGDataPArray(amg_data);
   R_array           = hypre_ParAMGDataRArray(amg_data);
   CF_marker_array   = hypre_ParAMGDataCFMarkerArray(amg_data);
   Vtemp             = hypre_ParAMGDataVtemp(amg_data);
   Ztemp             = hypre_ParAMGDataZtemp(amg_data);
   num_levels        = hypre_ParAMGDataNumLevels(amg_data);
   additive          = hypre_ParAMGDataAdditive(amg_data);
   mult_additive     = hypre_ParAMGDataMultAdditive(amg_data);
   simple            = hypre_ParAMGDataSimple(amg_data);
   grid_relax_type   = hypre_ParAMGDataGridRelaxType(amg_data);
   Lambda            = hypre_ParAMGDataLambda(amg_data);
   Xtilde            = hypre_ParAMGDataXtilde(amg_data);
   Rtilde            = hypre_ParAMGDataRtilde(amg_data);
   l1_norms          = hypre_ParAMGDataL1Norms(amg_data);
   D_inv             = hypre_ParAMGDataDinv(amg_data);
   grid_relax_type   = hypre_ParAMGDataGridRelaxType(amg_data);
   relax_weight      = hypre_ParAMGDataRelaxWeight(amg_data);
   omega             = hypre_ParAMGDataOmega(amg_data);
   rlx_order         = hypre_ParAMGDataRelaxOrder(amg_data);

   /* Initialize */

   addlvl = hypre_max(additive, mult_additive);
   addlvl = hypre_max(addlvl, simple);
   Solve_err_flag = 0;

   /*---------------------------------------------------------------------
    * Main loop of cycling --- multiplicative version --- V-cycle
    *--------------------------------------------------------------------*/

   /* down cycle */
   relax_type = grid_relax_type[1];
   rlx_down = grid_relax_type[1];
   rlx_up = grid_relax_type[2];
   for (level = 0; level < num_levels-1; level++)
   {
      fine_grid = level;
      coarse_grid = level + 1;

      u_data = hypre_VectorData(hypre_ParVectorLocalVector(U_array[fine_grid]));
      f_data = hypre_VectorData(hypre_ParVectorLocalVector(F_array[fine_grid]));
      v_data = hypre_VectorData(hypre_ParVectorLocalVector(Vtemp));
      l1_norms_lvl = l1_norms[level];

      hypre_ParVectorSetConstantValues(U_array[coarse_grid], 0.0); 

      if (level < addlvl) /* multiplicative version */
      {
         /* smoothing step */

         if (rlx_down == 0)
         {
            HYPRE_Real *A_data = hypre_CSRMatrixData(hypre_ParCSRMatrixDiag(A_array[fine_grid]));
            HYPRE_Int *A_i = hypre_CSRMatrixI(hypre_ParCSRMatrixDiag(A_array[fine_grid]));
            hypre_ParVectorCopy(F_array[fine_grid],Vtemp);
            num_rows = hypre_CSRMatrixNumRows(hypre_ParCSRMatrixDiag(A_array[fine_grid]));
#ifdef HYPRE_USING_OPENMP
#pragma omp parallel for private(i) HYPRE_SMP_SCHEDULE
#endif
            for (i = 0; i < num_rows; i++)
               u_data[i] = relax_weight[level]*v_data[i] / A_data[A_i[i]];
         }

         else if (rlx_down != 18)
         {
            /*hypre_BoomerAMGRelax(A_array[fine_grid],F_array[fine_grid],NULL,rlx_down,0,*/
            hypre_BoomerAMGRelaxIF(A_array[fine_grid],F_array[fine_grid],
	     CF_marker_array[fine_grid], rlx_down,rlx_order,1,
             relax_weight[fine_grid], omega[fine_grid],
             l1_norms_lvl, U_array[fine_grid], Vtemp, Ztemp);
            hypre_ParVectorCopy(F_array[fine_grid],Vtemp);
         }
         else
         {
            hypre_ParVectorCopy(F_array[fine_grid],Vtemp);
            num_rows = hypre_CSRMatrixNumRows(hypre_ParCSRMatrixDiag(A_array[fine_grid]));
#ifdef HYPRE_USING_OPENMP
#pragma omp parallel for private(i) HYPRE_SMP_SCHEDULE
#endif
	    for (i = 0; i < num_rows; i++)
               u_data[i] += v_data[i] / l1_norms_lvl[i];
         }
     
         alpha = -1.0;
         beta = 1.0;
         hypre_ParCSRMatrixMatvec(alpha, A_array[fine_grid], U_array[fine_grid],
                                     beta, Vtemp);

         alpha = 1.0;
         beta = 0.0;
         hypre_ParCSRMatrixMatvecT(alpha,R_array[fine_grid],Vtemp,
                                      beta,F_array[coarse_grid]);
      }
      else /* additive version */
      {
         hypre_ParVectorCopy(F_array[fine_grid],Vtemp);
         if (level == 0) /* compute residual */
         {
            hypre_ParVectorCopy(Vtemp, Rtilde);
            hypre_ParVectorCopy(U_array[fine_grid],Xtilde);
         }
         alpha = 1.0;
         beta = 0.0;
         hypre_ParCSRMatrixMatvecT(alpha,R_array[fine_grid],Vtemp,
                                      beta,F_array[coarse_grid]);
      }
   }

   /* solve coarse grid */ 
   if (addlvl < num_levels)
   {
      if (simple > -1)
      {
         x_global = hypre_VectorData(hypre_ParVectorLocalVector(Xtilde));
         r_global = hypre_VectorData(hypre_ParVectorLocalVector(Rtilde));
         n_global = hypre_VectorSize(hypre_ParVectorLocalVector(Xtilde));
#ifdef HYPRE_USING_OPENMP
#pragma omp parallel for private(i) HYPRE_SMP_SCHEDULE
#endif
	 for (i=0; i < n_global; i++)
	    x_global[i] += D_inv[i]*r_global[i];
      }
      else
	 hypre_ParCSRMatrixMatvec(1.0, Lambda, Rtilde, 1.0, Xtilde);
      if (addlvl == 0) hypre_ParVectorCopy(Xtilde, U_array[0]);
   }
   else
   {
      fine_grid = num_levels -1;
      hypre_ParCSRRelax(A_array[fine_grid], F_array[fine_grid],
                              1, 1, l1_norms[fine_grid],
                              1.0, 1.0 ,0,0,0,0,
                              U_array[fine_grid], Vtemp, Ztemp);
   }

   /* up cycle */
   relax_type = grid_relax_type[2];
   for (level = num_levels-1; level > 0; level--)
   {
      fine_grid = level - 1;
      coarse_grid = level;

      if (level <= addlvl) /* multiplicative version */
      {
         alpha = 1.0;
         beta = 1.0;
         hypre_ParCSRMatrixMatvec(alpha, P_array[fine_grid], 
                                     U_array[coarse_grid],
                                     beta, U_array[fine_grid]);            
         if (rlx_up != 18)
            /*hypre_BoomerAMGRelax(A_array[fine_grid],F_array[fine_grid],NULL,rlx_up,0,*/
            hypre_BoomerAMGRelaxIF(A_array[fine_grid],F_array[fine_grid],
		CF_marker_array[fine_grid],
		rlx_up,rlx_order,2,
                relax_weight[fine_grid], omega[fine_grid],
                l1_norms[fine_grid], U_array[fine_grid], Vtemp, Ztemp);
         else if (rlx_order)
         {
            HYPRE_Int loc_relax_points[2];
            loc_relax_points[0] = -1;
            loc_relax_points[1] = 1;
            for (i=0; i < 2; i++)
                hypre_ParCSRRelax_L1_Jacobi(A_array[fine_grid],F_array[fine_grid],
                                            CF_marker_array[fine_grid],
                                            loc_relax_points[i],
                                            1.0, l1_norms[fine_grid],
                                            U_array[fine_grid], Vtemp);
         }
         else 
            hypre_ParCSRRelax(A_array[fine_grid], F_array[fine_grid],
                                 1, 1, l1_norms[fine_grid],
                                 1.0, 1.0 ,0,0,0,0,
                                 U_array[fine_grid], Vtemp, Ztemp);
      }
      else /* additive version */
      {
         alpha = 1.0;
         beta = 1.0;
         hypre_ParCSRMatrixMatvec(alpha, P_array[fine_grid], 
                                     U_array[coarse_grid],
                                     beta, U_array[fine_grid]);            
      }
   }

   return(Solve_err_flag);
}
Esempio n. 10
0
HYPRE_Int
main( HYPRE_Int   argc,
      char *argv[] )
{
   hypre_CSRMatrix     *matrix;
   hypre_CSRMatrix     *matrix1;
   hypre_ParCSRMatrix  *par_matrix;
   hypre_Vector        *x_local;
   hypre_Vector        *y_local;
   hypre_Vector        *y2_local;
   hypre_ParVector     *x;
   hypre_ParVector     *x2;
   hypre_ParVector     *y;
   hypre_ParVector     *y2;

   HYPRE_Int          vecstride_x, idxstride_x, vecstride_y, idxstride_y;
   HYPRE_Int          num_procs, my_id;
   HYPRE_Int		local_size;
   HYPRE_Int          num_vectors;
   HYPRE_Int		global_num_rows, global_num_cols;
   HYPRE_Int		first_index;
   HYPRE_Int 		i, j, ierr=0;
   double 	*data, *data2;
   HYPRE_Int 		*row_starts, *col_starts;
   char		file_name[80];
   /* Initialize MPI */
   hypre_MPI_Init(&argc, &argv);

   hypre_MPI_Comm_size(hypre_MPI_COMM_WORLD, &num_procs);
   hypre_MPI_Comm_rank(hypre_MPI_COMM_WORLD, &my_id);

   hypre_printf(" my_id: %d num_procs: %d\n", my_id, num_procs);
 
   if (my_id == 0) 
   {
	matrix = hypre_CSRMatrixRead("input");
   	hypre_printf(" read input\n");
   }
   row_starts = NULL;
   col_starts = NULL; 
   par_matrix = hypre_CSRMatrixToParCSRMatrix(hypre_MPI_COMM_WORLD, matrix, 
		row_starts, col_starts);
   hypre_printf(" converted\n");

   matrix1 = hypre_ParCSRMatrixToCSRMatrixAll(par_matrix);

   hypre_sprintf(file_name,"matrix1.%d",my_id);

   if (matrix1) hypre_CSRMatrixPrint(matrix1, file_name);

   hypre_ParCSRMatrixPrint(par_matrix,"matrix");
   hypre_ParCSRMatrixPrintIJ(par_matrix,0,0,"matrixIJ");

   par_matrix = hypre_ParCSRMatrixRead(hypre_MPI_COMM_WORLD,"matrix");

   global_num_cols = hypre_ParCSRMatrixGlobalNumCols(par_matrix);
   hypre_printf(" global_num_cols %d\n", global_num_cols);
   global_num_rows = hypre_ParCSRMatrixGlobalNumRows(par_matrix);
 
   col_starts = hypre_ParCSRMatrixColStarts(par_matrix);
   first_index = col_starts[my_id];
   local_size = col_starts[my_id+1] - first_index;

   num_vectors = 3;

   x = hypre_ParMultiVectorCreate( hypre_MPI_COMM_WORLD, global_num_cols,
                                         col_starts, num_vectors );
   hypre_ParVectorSetPartitioningOwner(x,0);
   hypre_ParVectorInitialize(x);
   x_local = hypre_ParVectorLocalVector(x);
   data = hypre_VectorData(x_local);
   vecstride_x = hypre_VectorVectorStride(x_local);
   idxstride_x = hypre_VectorIndexStride(x_local);
   for ( j=0; j<num_vectors; ++j )
      for (i=0; i < local_size; i++)
         data[i*idxstride_x + j*vecstride_x] = first_index+i+1 + 100*j;

   x2 = hypre_ParMultiVectorCreate( hypre_MPI_COMM_WORLD, global_num_cols,
                                    col_starts, num_vectors );
   hypre_ParVectorSetPartitioningOwner(x2,0);
   hypre_ParVectorInitialize(x2);
   hypre_ParVectorSetConstantValues(x2,2.0);

   row_starts = hypre_ParCSRMatrixRowStarts(par_matrix);
   first_index = row_starts[my_id];
   local_size = row_starts[my_id+1] - first_index;
   y = hypre_ParMultiVectorCreate( hypre_MPI_COMM_WORLD, global_num_rows,
                                   row_starts, num_vectors );
   hypre_ParVectorSetPartitioningOwner(y,0);
   hypre_ParVectorInitialize(y);
   y_local = hypre_ParVectorLocalVector(y);

   y2 = hypre_ParMultiVectorCreate( hypre_MPI_COMM_WORLD, global_num_rows,
                                    row_starts, num_vectors );
   hypre_ParVectorSetPartitioningOwner(y2,0);
   hypre_ParVectorInitialize(y2);
   y2_local = hypre_ParVectorLocalVector(y2);
   data2 = hypre_VectorData(y2_local);
   vecstride_y = hypre_VectorVectorStride(y2_local);
   idxstride_y = hypre_VectorIndexStride(y2_local);
 
   for ( j=0; j<num_vectors; ++j )
      for (i=0; i < local_size; i++)
         data2[i*idxstride_y+j*vecstride_y] = first_index+i+1 + 100*j;

   hypre_ParVectorSetConstantValues(y,1.0);
   hypre_printf(" initialized vectors, first_index=%i\n", first_index);

   hypre_ParVectorPrint(x, "vectorx");
   hypre_ParVectorPrint(y, "vectory");

   hypre_MatvecCommPkgCreate(par_matrix);

   hypre_ParCSRMatrixMatvec ( 1.0, par_matrix, x, 1.0, y);
   hypre_printf(" did matvec\n");

   hypre_ParVectorPrint(y, "result");

   ierr = hypre_ParCSRMatrixMatvecT ( 1.0, par_matrix, y2, 1.0, x2);
   hypre_printf(" did matvecT %d\n", ierr);

   hypre_ParVectorPrint(x2, "transp"); 

   hypre_ParCSRMatrixDestroy(par_matrix);
   hypre_ParVectorDestroy(x);
   hypre_ParVectorDestroy(x2);
   hypre_ParVectorDestroy(y);
   hypre_ParVectorDestroy(y2);
   if (my_id == 0) hypre_CSRMatrixDestroy(matrix);
   if (matrix1) hypre_CSRMatrixDestroy(matrix1);

   /* Finalize MPI */
   hypre_MPI_Finalize();

   return 0;
}