示例#1
0
extern "C" magma_int_t
magma_ccumilusetup(
    magma_c_matrix A,
    magma_c_preconditioner *precond,
    magma_queue_t queue )
{
    magma_int_t info = 0;
    
    cusparseHandle_t cusparseHandle=NULL;
    cusparseMatDescr_t descrA=NULL;
    cusparseMatDescr_t descrL=NULL;
    cusparseMatDescr_t descrU=NULL;
#if CUDA_VERSION >= 7000
    csrilu02Info_t info_M=NULL;
    void *pBuffer = NULL;
#endif
    
    //magma_cprint_matrix(A, queue );
    // copy matrix into preconditioner parameter
    magma_c_matrix hA={Magma_CSR}, hACSR={Magma_CSR};
    magma_c_matrix hL={Magma_CSR}, hU={Magma_CSR};
    CHECK( magma_cmtransfer( A, &hA, A.memory_location, Magma_CPU, queue ));
    CHECK( magma_cmconvert( hA, &hACSR, hA.storage_type, Magma_CSR, queue ));

        // in case using fill-in
    if( precond->levels > 0 ){
        magma_c_matrix hAL={Magma_CSR}, hAUt={Magma_CSR};
        CHECK( magma_csymbilu( &hACSR, precond->levels, &hAL, &hAUt,  queue ));
        magma_cmfree(&hAL, queue);
        magma_cmfree(&hAUt, queue);
    }

    CHECK( magma_cmtransfer(hACSR, &(precond->M), Magma_CPU, Magma_DEV, queue ));

    magma_cmfree( &hA, queue );
    magma_cmfree( &hACSR, queue );

    // CUSPARSE context //
    CHECK_CUSPARSE( cusparseCreate( &cusparseHandle ));
    CHECK_CUSPARSE( cusparseSetStream( cusparseHandle, queue->cuda_stream() ));
    CHECK_CUSPARSE( cusparseCreateMatDescr( &descrA ));
    CHECK_CUSPARSE( cusparseSetMatType( descrA, CUSPARSE_MATRIX_TYPE_GENERAL ));
    CHECK_CUSPARSE( cusparseSetMatDiagType( descrA, CUSPARSE_DIAG_TYPE_NON_UNIT ));
    CHECK_CUSPARSE( cusparseSetMatIndexBase( descrA, CUSPARSE_INDEX_BASE_ZERO ));
    CHECK_CUSPARSE( cusparseCreateSolveAnalysisInfo( &(precond->cuinfo) ));
    // use kernel to manually check for zeros n the diagonal
    CHECK( magma_cdiagcheck( precond->M, queue ) );
    
#if CUDA_VERSION >= 7000
    // this version has the bug fixed where a zero on the diagonal causes a crash
    CHECK_CUSPARSE( cusparseCreateCsrilu02Info(&info_M) );
    int buffersize;
    int structural_zero;
    int numerical_zero;
    
    CHECK_CUSPARSE(
    cusparseCcsrilu02_bufferSize( cusparseHandle,
                         precond->M.num_rows, precond->M.nnz, descrA,
                         precond->M.dval, precond->M.drow, precond->M.dcol,
                         info_M,
                         &buffersize ) );
    
    CHECK( magma_malloc((void**)&pBuffer, buffersize) );

    CHECK_CUSPARSE( cusparseCcsrilu02_analysis( cusparseHandle,
            precond->M.num_rows, precond->M.nnz, descrA,
            precond->M.dval, precond->M.drow, precond->M.dcol,
            info_M, CUSPARSE_SOLVE_POLICY_NO_LEVEL, pBuffer ));
    
    CHECK_CUSPARSE( cusparseXcsrilu02_zeroPivot( cusparseHandle, info_M, &numerical_zero ) );
    CHECK_CUSPARSE( cusparseXcsrilu02_zeroPivot( cusparseHandle, info_M, &structural_zero ) );
    
    CHECK_CUSPARSE(
    cusparseCcsrilu02( cusparseHandle,
                         precond->M.num_rows, precond->M.nnz, descrA,
                         precond->M.dval, precond->M.drow, precond->M.dcol,
                         info_M, CUSPARSE_SOLVE_POLICY_NO_LEVEL, pBuffer) );
#else
    // this version contains the bug but is needed for backward compability
    CHECK_CUSPARSE( cusparseCcsrsm_analysis( cusparseHandle,
                CUSPARSE_OPERATION_NON_TRANSPOSE,
                precond->M.num_rows, precond->M.nnz, descrA,
                precond->M.dval, precond->M.drow, precond->M.dcol,
                precond->cuinfo ));
    CHECK_CUSPARSE( cusparseCcsrilu0( cusparseHandle, CUSPARSE_OPERATION_NON_TRANSPOSE,
                      precond->M.num_rows, descrA,
                      precond->M.dval,
                      precond->M.drow,
                      precond->M.dcol,
                      precond->cuinfo ));
#endif

    CHECK( magma_cmtransfer( precond->M, &hA, Magma_DEV, Magma_CPU, queue ));

    hL.diagorder_type = Magma_UNITY;
    CHECK( magma_cmconvert( hA, &hL , Magma_CSR, Magma_CSRL, queue ));
    hU.diagorder_type = Magma_VALUE;
    CHECK( magma_cmconvert( hA, &hU , Magma_CSR, Magma_CSRU, queue ));
    CHECK( magma_cmtransfer( hL, &(precond->L), Magma_CPU, Magma_DEV, queue ));
    CHECK( magma_cmtransfer( hU, &(precond->U), Magma_CPU, Magma_DEV, queue ));


    CHECK_CUSPARSE( cusparseCreateMatDescr( &descrL ));
    CHECK_CUSPARSE( cusparseSetMatType( descrL, CUSPARSE_MATRIX_TYPE_TRIANGULAR ));
    CHECK_CUSPARSE( cusparseSetMatDiagType( descrL, CUSPARSE_DIAG_TYPE_UNIT ));
    CHECK_CUSPARSE( cusparseSetMatIndexBase( descrL, CUSPARSE_INDEX_BASE_ZERO ));
    CHECK_CUSPARSE( cusparseSetMatFillMode( descrL, CUSPARSE_FILL_MODE_LOWER ));
    CHECK_CUSPARSE( cusparseCreateSolveAnalysisInfo( &precond->cuinfoL ));
    CHECK_CUSPARSE( cusparseCcsrsm_analysis( cusparseHandle,
        CUSPARSE_OPERATION_NON_TRANSPOSE, precond->L.num_rows,
        precond->L.nnz, descrL,
        precond->L.dval, precond->L.drow, precond->L.dcol, precond->cuinfoL ));

    CHECK_CUSPARSE( cusparseCreateMatDescr( &descrU ));
    CHECK_CUSPARSE( cusparseSetMatType( descrU, CUSPARSE_MATRIX_TYPE_TRIANGULAR ));
    CHECK_CUSPARSE( cusparseSetMatDiagType( descrU, CUSPARSE_DIAG_TYPE_NON_UNIT ));
    CHECK_CUSPARSE( cusparseSetMatIndexBase( descrU, CUSPARSE_INDEX_BASE_ZERO ));
    CHECK_CUSPARSE( cusparseSetMatFillMode( descrU, CUSPARSE_FILL_MODE_UPPER ));
    CHECK_CUSPARSE( cusparseCreateSolveAnalysisInfo( &precond->cuinfoU ));
    CHECK_CUSPARSE( cusparseCcsrsm_analysis( cusparseHandle,
        CUSPARSE_OPERATION_NON_TRANSPOSE, precond->U.num_rows,
        precond->U.nnz, descrU,
        precond->U.dval, precond->U.drow, precond->U.dcol, precond->cuinfoU ));


    if( precond->maxiter < 50 ){
        //prepare for iterative solves
        
        // extract the diagonal of L into precond->d
        CHECK( magma_cjacobisetup_diagscal( precond->L, &precond->d, queue ));
        CHECK( magma_cvinit( &precond->work1, Magma_DEV, hA.num_rows, 1, MAGMA_C_ZERO, queue ));
        
        // extract the diagonal of U into precond->d2
        CHECK( magma_cjacobisetup_diagscal( precond->U, &precond->d2, queue ));
        CHECK( magma_cvinit( &precond->work2, Magma_DEV, hA.num_rows, 1, MAGMA_C_ZERO, queue ));
    }

    
cleanup:
#if CUDA_VERSION >= 7000
    magma_free( pBuffer );
    cusparseDestroyCsrilu02Info( info_M );
#endif
    cusparseDestroySolveAnalysisInfo( precond->cuinfo );
    cusparseDestroyMatDescr( descrA );
    cusparseDestroyMatDescr( descrL );
    cusparseDestroyMatDescr( descrU );
    cusparseDestroy( cusparseHandle );
    magma_cmfree( &hA, queue );
    magma_cmfree( &hACSR, queue );
    magma_cmfree(&hA, queue );
    magma_cmfree(&hL, queue );
    magma_cmfree(&hU, queue );

    return info;
}
示例#2
0
extern "C" magma_int_t
magma_ccumilusetup(
    magma_c_matrix A,
    magma_c_preconditioner *precond,
    magma_queue_t queue )
{
    magma_int_t info = 0;
    
    cusparseHandle_t cusparseHandle=NULL;
    cusparseMatDescr_t descrA=NULL;
    cusparseMatDescr_t descrL=NULL;
    cusparseMatDescr_t descrU=NULL;
    
    //magma_cprint_matrix(A, queue );
    // copy matrix into preconditioner parameter
    magma_c_matrix hA={Magma_CSR}, hACSR={Magma_CSR};
    magma_c_matrix hL={Magma_CSR}, hU={Magma_CSR};
    CHECK( magma_cmtransfer( A, &hA, A.memory_location, Magma_CPU, queue ));
    CHECK( magma_cmconvert( hA, &hACSR, hA.storage_type, Magma_CSR, queue ));

        // in case using fill-in
    if( precond->levels > 0 ){
        magma_c_matrix hAL={Magma_CSR}, hAUt={Magma_CSR};
        CHECK( magma_csymbilu( &hACSR, precond->levels, &hAL, &hAUt,  queue ));
        magma_cmfree(&hAL, queue);
        magma_cmfree(&hAUt, queue);
    }

    CHECK( magma_cmtransfer(hACSR, &(precond->M), Magma_CPU, Magma_DEV, queue ));

    magma_cmfree( &hA, queue );
    magma_cmfree( &hACSR, queue );

    // CUSPARSE context //
    CHECK_CUSPARSE( cusparseCreate( &cusparseHandle ));
    CHECK_CUSPARSE( cusparseSetStream( cusparseHandle, queue ));
    CHECK_CUSPARSE( cusparseCreateMatDescr( &descrA ));
    CHECK_CUSPARSE( cusparseSetMatType( descrA, CUSPARSE_MATRIX_TYPE_GENERAL ));
    CHECK_CUSPARSE( cusparseSetMatDiagType( descrA, CUSPARSE_DIAG_TYPE_NON_UNIT ));
    CHECK_CUSPARSE( cusparseSetMatIndexBase( descrA, CUSPARSE_INDEX_BASE_ZERO ));
    CHECK_CUSPARSE( cusparseCreateSolveAnalysisInfo( &(precond->cuinfo) ));
    CHECK_CUSPARSE( cusparseCcsrsm_analysis( cusparseHandle,
                CUSPARSE_OPERATION_NON_TRANSPOSE,
                precond->M.num_rows, precond->M.nnz, descrA,
                precond->M.dval, precond->M.drow, precond->M.dcol,
                precond->cuinfo ));
    CHECK_CUSPARSE( cusparseCcsrilu0( cusparseHandle, CUSPARSE_OPERATION_NON_TRANSPOSE,
                      precond->M.num_rows, descrA,
                      precond->M.dval,
                      precond->M.drow,
                      precond->M.dcol,
                      precond->cuinfo ));

    CHECK( magma_cmtransfer( precond->M, &hA, Magma_DEV, Magma_CPU, queue ));

    hL.diagorder_type = Magma_UNITY;
    CHECK( magma_cmconvert( hA, &hL , Magma_CSR, Magma_CSRL, queue ));
    hU.diagorder_type = Magma_VALUE;
    CHECK( magma_cmconvert( hA, &hU , Magma_CSR, Magma_CSRU, queue ));
    CHECK( magma_cmtransfer( hL, &(precond->L), Magma_CPU, Magma_DEV, queue ));
    CHECK( magma_cmtransfer( hU, &(precond->U), Magma_CPU, Magma_DEV, queue ));


    CHECK_CUSPARSE( cusparseCreateMatDescr( &descrL ));
    CHECK_CUSPARSE( cusparseSetMatType( descrL, CUSPARSE_MATRIX_TYPE_TRIANGULAR ));
    CHECK_CUSPARSE( cusparseSetMatDiagType( descrL, CUSPARSE_DIAG_TYPE_UNIT ));
    CHECK_CUSPARSE( cusparseSetMatIndexBase( descrL, CUSPARSE_INDEX_BASE_ZERO ));
    CHECK_CUSPARSE( cusparseSetMatFillMode( descrL, CUSPARSE_FILL_MODE_LOWER ));
    CHECK_CUSPARSE( cusparseCreateSolveAnalysisInfo( &precond->cuinfoL ));
    CHECK_CUSPARSE( cusparseCcsrsm_analysis( cusparseHandle,
        CUSPARSE_OPERATION_NON_TRANSPOSE, precond->L.num_rows,
        precond->L.nnz, descrL,
        precond->L.dval, precond->L.drow, precond->L.dcol, precond->cuinfoL ));

    CHECK_CUSPARSE( cusparseCreateMatDescr( &descrU ));
    CHECK_CUSPARSE( cusparseSetMatType( descrU, CUSPARSE_MATRIX_TYPE_TRIANGULAR ));
    CHECK_CUSPARSE( cusparseSetMatDiagType( descrU, CUSPARSE_DIAG_TYPE_NON_UNIT ));
    CHECK_CUSPARSE( cusparseSetMatIndexBase( descrU, CUSPARSE_INDEX_BASE_ZERO ));
    CHECK_CUSPARSE( cusparseSetMatFillMode( descrU, CUSPARSE_FILL_MODE_UPPER ));
    CHECK_CUSPARSE( cusparseCreateSolveAnalysisInfo( &precond->cuinfoU ));
    CHECK_CUSPARSE( cusparseCcsrsm_analysis( cusparseHandle,
        CUSPARSE_OPERATION_NON_TRANSPOSE, precond->U.num_rows,
        precond->U.nnz, descrU,
        precond->U.dval, precond->U.drow, precond->U.dcol, precond->cuinfoU ));


    if( precond->maxiter < 50 ){
        //prepare for iterative solves
        
        // extract the diagonal of L into precond->d
        CHECK( magma_cjacobisetup_diagscal( precond->L, &precond->d, queue ));
        CHECK( magma_cvinit( &precond->work1, Magma_DEV, hA.num_rows, 1, MAGMA_C_ZERO, queue ));
        
        // extract the diagonal of U into precond->d2
        CHECK( magma_cjacobisetup_diagscal( precond->U, &precond->d2, queue ));
        CHECK( magma_cvinit( &precond->work2, Magma_DEV, hA.num_rows, 1, MAGMA_C_ZERO, queue ));
    }

    
cleanup:
    cusparseDestroySolveAnalysisInfo( precond->cuinfo );
    cusparseDestroyMatDescr( descrA );
    cusparseDestroyMatDescr( descrL );
    cusparseDestroyMatDescr( descrU );
    cusparseDestroy( cusparseHandle );
    magma_cmfree( &hA, queue );
    magma_cmfree( &hACSR, queue );
    magma_cmfree(&hA, queue );
    magma_cmfree(&hL, queue );
    magma_cmfree(&hU, queue );

    return info;
}