int main(int argc, char **argv)
{
MPI_Init(&argc, &argv);
int rank, size;
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
MPI_Comm_size(MPI_COMM_WORLD, &size);
int *groups = (int *)malloc(size * sizeof(int));
int *groups2 = (int *)malloc(size * sizeof(int));
int my_type = 1; //This is to be read from a configuration file
MPI_Allgather(&my_type, 1, MPI_INT, groups, 1, MPI_INT, MPI_COMM_WORLD);
int num_groups = 0;
for (int i = 0; i < size; i++) num_groups = num_groups > groups[i] ? num_groups : groups[i];
num_groups++;
//The global group
MPI_Group global_grp;
MPI_Comm_group(MPI_COMM_WORLD, &global_grp);
//Create sub-groups and sub-communicators
MPI_Group mpigroups[num_groups];
MPI_Comm mpicomms[num_groups];
int count = 0;
for (int i = 0; i < num_groups; ++i) {
count = 0;
for (int j = 0; j < size; ++j) {
if (groups[j] == i) {
groups2[count++] = j;
}
}
MPI_Group_incl(global_grp, count, groups2, &mpigroups[i]);
MPI_Comm_create(MPI_COMM_WORLD, mpigroups[i], &mpicomms[i]);
}
//coupling procs
for (int i = 0; i < 1; ++i) {
count = 0;
for (int j = 0; j < size; ++j) {
if (groups[j] == i) {
groups2[count++] = j;
}
}
}
// OP initialisation
op_mpi_init(argc,argv,2,MPI_COMM_WORLD, mpicomms[1]);
int niter;
double rms;
//timer
double cpu_t1, cpu_t2, wall_t1, wall_t2;
// set constants and initialise flow field and residual
op_printf("initialising flow field \n");
char file[] = "new_grid.h5";
// declare sets, pointers, datasets and global constants
op_set nodes = op_decl_set_hdf5(file, "nodes");
op_set edges = op_decl_set_hdf5(file, "edges");
op_set bedges = op_decl_set_hdf5(file, "bedges");
op_set cells = op_decl_set_hdf5(file, "cells");
op_map pedge = op_decl_map_hdf5(edges, nodes, 2, file, "pedge");
op_map pecell = op_decl_map_hdf5(edges, cells,2, file, "pecell");
op_map pbedge = op_decl_map_hdf5(bedges,nodes,2, file, "pbedge");
op_map pbecell = op_decl_map_hdf5(bedges,cells,1, file, "pbecell");
op_map pcell = op_decl_map_hdf5(cells, nodes,4, file, "pcell");
op_map pbndbnd = op_decl_map_hdf5(bedges, bedges,1, file, "pbndbnd");
op_map m_test = op_decl_map_hdf5(cells, nodes,4, file, "m_test");
if (m_test == NULL) printf("m_test not found\n");
op_dat p_bound = op_decl_dat_hdf5(bedges,1,"int" ,file,"p_bound");
op_dat p_x = op_decl_dat_hdf5(nodes ,2,"double",file,"p_x");
op_dat p_q = op_decl_dat_hdf5(cells ,4,"double",file,"p_q");
op_dat p_qold = op_decl_dat_hdf5(cells ,4,"double",file,"p_qold");
op_dat p_adt = op_decl_dat_hdf5(cells ,1,"double",file,"p_adt");
op_dat p_res = op_decl_dat_hdf5(cells ,4,"double",file,"p_res");
op_dat p_test = op_decl_dat_hdf5(cells ,4,"double",file,"p_test");
if (p_test == NULL) printf("p_test not found\n");
op_get_const_hdf5("gam", 1, "double", (char *)&gam, "new_grid.h5");
op_get_const_hdf5("gm1", 1, "double", (char *)&gm1, "new_grid.h5");
op_get_const_hdf5("cfl", 1, "double", (char *)&cfl, "new_grid.h5");
op_get_const_hdf5("eps", 1, "double", (char *)&eps, "new_grid.h5");
op_get_const_hdf5("mach", 1, "double", (char *)&mach, "new_grid.h5");
op_get_const_hdf5("alpha", 1, "double", (char *)&alpha, "new_grid.h5");
op_get_const_hdf5("qinf", 4, "double", (char *)&qinf, "new_grid.h5");
op_decl_const(1,"double",&gam );
op_decl_const(1,"double",&gm1 );
op_decl_const(1,"double",&cfl );
op_decl_const(1,"double",&eps );
op_decl_const(1,"double",&mach );
op_decl_const(1,"double",&alpha);
op_decl_const(4,"double",qinf );
op_diagnostic_output();
//write back original data just to compare you read the file correctly
//do an h5diff between new_grid_out.h5 and new_grid.h5 to
//compare two hdf5 files
op_dump_to_hdf5("new_grid_out.h5");
op_write_const_hdf5("gam",1,"double",(char *)&gam, "new_grid_out.h5");
op_write_const_hdf5("gm1",1,"double",(char *)&gm1, "new_grid_out.h5");
op_write_const_hdf5("cfl",1,"double",(char *)&cfl, "new_grid_out.h5");
op_write_const_hdf5("eps",1,"double",(char *)&eps, "new_grid_out.h5");
op_write_const_hdf5("mach",1,"double",(char *)&mach, "new_grid_out.h5");
op_write_const_hdf5("alpha",1,"double",(char *)&alpha, "new_grid_out.h5");
op_write_const_hdf5("qinf",4,"double",(char *)qinf, "new_grid_out.h5");
//trigger partitioning and halo creation routines
op_partition("PTSCOTCH", "KWAY", edges, pecell, p_x);
//op_partition("PARMETIS", "KWAY", edges, pecell, p_x);
int g_ncell = op_get_size(cells);
//create some temporaries so we can exchange data defined on the boundary
double *ptr = NULL;
op_dat center = op_decl_dat_temp(bedges, 3, "double", ptr, "center");
op_dat pres = op_decl_dat_temp(bedges, 1, "double", ptr, "pres");
int *ptr2 = NULL;
op_dat p_bound2 = op_decl_dat_temp(bedges, 1, "int", ptr2, "p_bound2");
op_dat center2 = op_decl_dat_temp(bedges, 3, "double", ptr, "center2");
op_dat pres2 = op_decl_dat_temp(bedges, 1, "double", ptr, "pres2");
//create import and export handles
op_export_handle handle = op_export_init(count, groups2, pbndbnd);
op_import_handle handle2 = op_import_init(count, groups2, center);
//initialise timers for total execution wall time
op_timers(&cpu_t1, &wall_t1);
// main time-marching loop
niter = 1000;
for(int iter=1; iter<=niter; iter++) {
// save old flow solution
op_par_loop(save_soln,"save_soln", cells,
op_arg_dat(p_q, -1,OP_ID, 4,"double",OP_READ ),
op_arg_dat(p_qold,-1,OP_ID, 4,"double",OP_WRITE));
// predictor/corrector update loop
for(int k=0; k<2; k++) {
// calculate area/timstep
op_par_loop(adt_calc,"adt_calc",cells,
op_arg_dat(p_x, 0,pcell, 2,"double",OP_READ ),
op_arg_dat(p_x, 1,pcell, 2,"double",OP_READ ),
op_arg_dat(p_x, 2,pcell, 2,"double",OP_READ ),
op_arg_dat(p_x, 3,pcell, 2,"double",OP_READ ),
op_arg_dat(p_q, -1,OP_ID, 4,"double",OP_READ ),
op_arg_dat(p_adt,-1,OP_ID, 1,"double",OP_WRITE));
// calculate flux residual
op_par_loop(res_calc,"res_calc",edges,
op_arg_dat(p_x, 0,pedge, 2,"double",OP_READ),
op_arg_dat(p_x, 1,pedge, 2,"double",OP_READ),
op_arg_dat(p_q, 0,pecell,4,"double",OP_READ),
op_arg_dat(p_q, 1,pecell,4,"double",OP_READ),
op_arg_dat(p_adt, 0,pecell,1,"double",OP_READ),
op_arg_dat(p_adt, 1,pecell,1,"double",OP_READ),
op_arg_dat(p_res, 0,pecell,4,"double",OP_INC ),
op_arg_dat(p_res, 1,pecell,4,"double",OP_INC ));
op_par_loop(bres_calc,"bres_calc",bedges,
op_arg_dat(p_x, 0,pbedge, 2,"double",OP_READ),
op_arg_dat(p_x, 1,pbedge, 2,"double",OP_READ),
op_arg_dat(p_q, 0,pbecell,4,"double",OP_READ),
op_arg_dat(p_adt, 0,pbecell,1,"double",OP_READ),
op_arg_dat(p_res, 0,pbecell,4,"double",OP_INC ),
op_arg_dat(p_bound,-1,OP_ID ,1,"int", OP_READ),
op_arg_dat(center, -1, OP_ID, 3, "double", OP_WRITE),
op_arg_dat(pres, -1, OP_ID, 1, "double", OP_WRITE));
// update flow field
rms = 0.0;
op_par_loop(update,"update",cells,
op_arg_dat(p_qold,-1,OP_ID, 4,"double",OP_READ ),
op_arg_dat(p_q, -1,OP_ID, 4,"double",OP_WRITE),
op_arg_dat(p_res, -1,OP_ID, 4,"double",OP_RW ),
op_arg_dat(p_adt, -1,OP_ID, 1,"double",OP_READ ),
op_arg_gbl(&rms,1,"double",OP_INC));
}
// print iteration history
rms = sqrt(rms/(double)g_ncell);
if (iter%100 == 0) {
op_printf(" %d %10.5e \n",iter,rms);
//Export data
op_dat arr[] = {p_bound, center, pres};
op_export_data(handle, 3, arr);
//Import data
op_dat arr2[] = {p_bound2, center2, pres2};
op_import_data(handle2, 3, arr2);
//check whether the two are the same
op_par_loop(comparethem, "comparethem", bedges,
op_arg_dat(p_bound,-1, OP_ID, 1, "int", OP_READ),
op_arg_dat(p_bound2,-1, OP_ID, 1, "int", OP_READ),
op_arg_dat(center,-1, OP_ID, 3, "double", OP_READ),
op_arg_dat(center2,-1, OP_ID, 3, "double", OP_READ),
op_arg_dat(pres,-1, OP_ID, 1, "double", OP_READ),
op_arg_dat(pres2,-1, OP_ID, 1, "double", OP_READ));
}
}
op_timers(&cpu_t2, &wall_t2);
double* q = (double *)malloc(sizeof(double)*op_get_size(cells)*4);
op_fetch_data_hdf5(p_q, q, 0, op_get_size(cells)-1);
free(q);
op_fetch_data_hdf5_file(p_q, "file_name.h5");
//printf("Root process = %d\n",op_is_root());
//output the result dat array to files
//op_write_hdf5("new_grid_out.h5");
//compress using
// ~/hdf5/bin/h5repack -f GZIP=9 new_grid.h5 new_grid_pack.h5
op_timing_output();
op_printf("Max total runtime = \n%f\n",wall_t2-wall_t1);
op_exit();
}
int main(int argc, char **argv)
{
// OP initialisation
op_init(argc,argv,2);
//MPI for user I/O
int my_rank;
int comm_size;
MPI_Comm_rank(MPI_COMM_WORLD, &my_rank);
MPI_Comm_size(MPI_COMM_WORLD, &comm_size);
//timer
double cpu_t1, cpu_t2, wall_t1, wall_t2;
int *becell, *ecell, *bound, *bedge, *edge, *cell;
double *x, *q, *qold, *adt, *res;
int nnode,ncell,nedge,nbedge,niter;
double rms;
/**------------------------BEGIN I/O and PARTITIONING -------------------**/
op_timers(&cpu_t1, &wall_t1);
/* read in grid from disk on root processor */
FILE *fp;
if ( (fp = fopen("new_grid.dat","r")) == NULL) {
op_printf("can't open file new_grid.dat\n"); exit(-1);
}
int g_nnode,g_ncell,g_nedge,g_nbedge;
check_scan(fscanf(fp,"%d %d %d %d \n",&g_nnode, &g_ncell, &g_nedge, &g_nbedge), 4);
int *g_becell = 0, *g_ecell = 0, *g_bound = 0, *g_bedge = 0, *g_edge = 0, *g_cell = 0;
double *g_x = 0,*g_q = 0, *g_qold = 0, *g_adt = 0, *g_res = 0;
// set constants
op_printf("initialising flow field\n");
gam = 1.4f;
gm1 = gam - 1.0f;
cfl = 0.9f;
eps = 0.05f;
double mach = 0.4f;
double alpha = 3.0f*atan(1.0f)/45.0f;
double p = 1.0f;
double r = 1.0f;
double u = sqrt(gam*p/r)*mach;
double e = p/(r*gm1) + 0.5f*u*u;
qinf[0] = r;
qinf[1] = r*u;
qinf[2] = 0.0f;
qinf[3] = r*e;
op_printf("reading in grid \n");
op_printf("Global number of nodes, cells, edges, bedges = %d, %d, %d, %d\n"
,g_nnode,g_ncell,g_nedge,g_nbedge);
if(my_rank == MPI_ROOT) {
g_cell = (int *) malloc(4*g_ncell*sizeof(int));
g_edge = (int *) malloc(2*g_nedge*sizeof(int));
g_ecell = (int *) malloc(2*g_nedge*sizeof(int));
g_bedge = (int *) malloc(2*g_nbedge*sizeof(int));
g_becell = (int *) malloc( g_nbedge*sizeof(int));
g_bound = (int *) malloc( g_nbedge*sizeof(int));
g_x = (double *) malloc(2*g_nnode*sizeof(double));
g_q = (double *) malloc(4*g_ncell*sizeof(double));
g_qold = (double *) malloc(4*g_ncell*sizeof(double));
g_res = (double *) malloc(4*g_ncell*sizeof(double));
g_adt = (double *) malloc( g_ncell*sizeof(double));
for (int n=0; n<g_nnode; n++){
check_scan(fscanf(fp,"%lf %lf \n",&g_x[2*n], &g_x[2*n+1]), 2);
}
for (int n=0; n<g_ncell; n++) {
check_scan(fscanf(fp,"%d %d %d %d \n",&g_cell[4*n ], &g_cell[4*n+1],
&g_cell[4*n+2], &g_cell[4*n+3]), 4);
}
for (int n=0; n<g_nedge; n++) {
check_scan(fscanf(fp,"%d %d %d %d \n",&g_edge[2*n],&g_edge[2*n+1],
&g_ecell[2*n],&g_ecell[2*n+1]), 4);
}
for (int n=0; n<g_nbedge; n++) {
check_scan(fscanf(fp,"%d %d %d %d \n",&g_bedge[2*n],&g_bedge[2*n+1],
&g_becell[n],&g_bound[n]), 4);
}
//initialise flow field and residual
for (int n=0; n<g_ncell; n++) {
for (int m=0; m<4; m++) {
g_q[4*n+m] = qinf[m];
g_res[4*n+m] = 0.0f;
}
}
}
fclose(fp);
nnode = compute_local_size (g_nnode, comm_size, my_rank);
ncell = compute_local_size (g_ncell, comm_size, my_rank);
nedge = compute_local_size (g_nedge, comm_size, my_rank);
nbedge = compute_local_size (g_nbedge, comm_size, my_rank);
op_printf("Number of nodes, cells, edges, bedges on process %d = %d, %d, %d, %d\n"
,my_rank,nnode,ncell,nedge,nbedge);
/*Allocate memory to hold local sets, mapping tables and data*/
cell = (int *) malloc(4*ncell*sizeof(int));
edge = (int *) malloc(2*nedge*sizeof(int));
ecell = (int *) malloc(2*nedge*sizeof(int));
bedge = (int *) malloc(2*nbedge*sizeof(int));
becell = (int *) malloc( nbedge*sizeof(int));
bound = (int *) malloc( nbedge*sizeof(int));
x = (double *) malloc(2*nnode*sizeof(double));
q = (double *) malloc(4*ncell*sizeof(double));
qold = (double *) malloc(4*ncell*sizeof(double));
res = (double *) malloc(4*ncell*sizeof(double));
adt = (double *) malloc( ncell*sizeof(double));
/* scatter sets, mappings and data on sets*/
scatter_int_array(g_cell, cell, comm_size, g_ncell,ncell, 4);
scatter_int_array(g_edge, edge, comm_size, g_nedge,nedge, 2);
scatter_int_array(g_ecell, ecell, comm_size, g_nedge,nedge, 2);
scatter_int_array(g_bedge, bedge, comm_size, g_nbedge,nbedge, 2);
scatter_int_array(g_becell, becell, comm_size, g_nbedge,nbedge, 1);
scatter_int_array(g_bound, bound, comm_size, g_nbedge,nbedge, 1);
scatter_double_array(g_x, x, comm_size, g_nnode,nnode, 2);
scatter_double_array(g_q, q, comm_size, g_ncell,ncell, 4);
scatter_double_array(g_qold, qold, comm_size, g_ncell,ncell, 4);
scatter_double_array(g_res, res, comm_size, g_ncell,ncell, 4);
scatter_double_array(g_adt, adt, comm_size, g_ncell,ncell, 1);
/*Freeing memory allocated to gloabal arrays on rank 0
after scattering to all processes*/
if(my_rank == MPI_ROOT) {
free(g_cell);
free(g_edge);
free(g_ecell);
free(g_bedge);
free(g_becell);
free(g_bound);
free(g_x );
free(g_q);
free(g_qold);
free(g_adt);
free(g_res);
}
op_timers(&cpu_t2, &wall_t2);
op_printf("Max total file read time = %f\n", wall_t2-wall_t1);
/**------------------------END I/O and PARTITIONING -----------------------**/
// declare sets, pointers, datasets and global constants
op_set nodes = op_decl_set(nnode, "nodes");
op_set edges = op_decl_set(nedge, "edges");
op_set bedges = op_decl_set(nbedge, "bedges");
op_set cells = op_decl_set(ncell, "cells");
op_map pedge = op_decl_map(edges, nodes,2,edge, "pedge");
op_map pecell = op_decl_map(edges, cells,2,ecell, "pecell");
op_map pbedge = op_decl_map(bedges,nodes,2,bedge, "pbedge");
op_map pbecell = op_decl_map(bedges,cells,1,becell,"pbecell");
op_map pcell = op_decl_map(cells, nodes,4,cell, "pcell");
op_dat p_bound = op_decl_dat(bedges,1,"int" ,bound,"p_bound");
op_dat p_x = op_decl_dat(nodes ,2,"double",x ,"p_x");
op_dat p_q = op_decl_dat(cells ,4,"double",q ,"p_q");
//op_dat p_qold = op_decl_dat(cells ,4,"double",qold ,"p_qold");
//op_dat p_adt = op_decl_dat(cells ,1,"double",adt ,"p_adt");
//op_dat p_res = op_decl_dat(cells ,4,"double",res ,"p_res");
// p_res, p_adt and p_qold now declared as a temp op_dats during
// the execution of the time-marching loop
op_decl_const2("gam",1,"double",&gam );
op_decl_const2("gm1",1,"double",&gm1 );
op_decl_const2("cfl",1,"double",&cfl );
op_decl_const2("eps",1,"double",&eps );
op_decl_const2("mach",1,"double",&mach );
op_decl_const2("alpha",1,"double",&alpha);
op_decl_const2("qinf",4,"double",qinf );
op_diagnostic_output();
//trigger partitioning and halo creation routines
op_partition("PTSCOTCH", "KWAY", cells, pecell, p_x);
//initialise timers for total execution wall time
op_timers(&cpu_t1, &wall_t1);
niter = 1000;
for(int iter=1; iter<=niter; iter++) {
double* tmp_elem = NULL;
op_dat p_res = op_decl_dat_temp(cells ,4,"double",tmp_elem,"p_res");
op_dat p_adt = op_decl_dat_temp(cells ,1,"double",tmp_elem,"p_adt");
op_dat p_qold = op_decl_dat_temp(cells ,4,"double",qold ,"p_qold");
//save old flow solution
op_par_loop_save_soln("save_soln",cells,
op_arg_dat(p_q,-1,OP_ID,4,"double",OP_READ),
op_arg_dat(p_qold,-1,OP_ID,4,"double",OP_WRITE));
// predictor/corrector update loop
for(int k=0; k<2; k++) {
// calculate area/timstep
op_par_loop_adt_calc("adt_calc",cells,
op_arg_dat(p_x,0,pcell,2,"double",OP_READ),
op_arg_dat(p_x,1,pcell,2,"double",OP_READ),
op_arg_dat(p_x,2,pcell,2,"double",OP_READ),
op_arg_dat(p_x,3,pcell,2,"double",OP_READ),
op_arg_dat(p_q,-1,OP_ID,4,"double",OP_READ),
op_arg_dat(p_adt,-1,OP_ID,1,"double",OP_WRITE));
// calculate flux residual
op_par_loop_res_calc("res_calc",edges,
op_arg_dat(p_x,0,pedge,2,"double",OP_READ),
op_arg_dat(p_x,1,pedge,2,"double",OP_READ),
op_arg_dat(p_q,0,pecell,4,"double",OP_READ),
op_arg_dat(p_q,1,pecell,4,"double",OP_READ),
op_arg_dat(p_adt,0,pecell,1,"double",OP_READ),
op_arg_dat(p_adt,1,pecell,1,"double",OP_READ),
op_arg_dat(p_res,0,pecell,4,"double",OP_INC),
op_arg_dat(p_res,1,pecell,4,"double",OP_INC));
op_par_loop_bres_calc("bres_calc",bedges,
op_arg_dat(p_x,0,pbedge,2,"double",OP_READ),
op_arg_dat(p_x,1,pbedge,2,"double",OP_READ),
op_arg_dat(p_q,0,pbecell,4,"double",OP_READ),
op_arg_dat(p_adt,0,pbecell,1,"double",OP_READ),
op_arg_dat(p_res,0,pbecell,4,"double",OP_INC),
op_arg_dat(p_bound,-1,OP_ID,1,"int",OP_READ));
// update flow field
rms = 0.0;
op_par_loop_update("update",cells,
op_arg_dat(p_qold,-1,OP_ID,4,"double",OP_READ),
op_arg_dat(p_q,-1,OP_ID,4,"double",OP_WRITE),
op_arg_dat(p_res,-1,OP_ID,4,"double",OP_RW),
op_arg_dat(p_adt,-1,OP_ID,1,"double",OP_READ),
op_arg_gbl(&rms,1,"double",OP_INC));
}
//print iteration history
rms = sqrt(rms/(double) g_ncell);
if (iter%100 == 0)
op_printf("%d %10.5e \n",iter,rms);
if (op_free_dat_temp(p_res) < 0)
op_printf("Error: temporary op_dat %s cannot be removed\n",p_res->name);
if (op_free_dat_temp(p_adt) < 0)
op_printf("Error: temporary op_dat %s cannot be removed\n",p_adt->name);
if (op_free_dat_temp(p_qold) < 0)
op_printf("Error: temporary op_dat %s cannot be removed\n",p_qold->name);
}
op_timers(&cpu_t2, &wall_t2);
op_timing_output();
//print total time for niter interations
op_printf("Max total runtime = %f\n",wall_t2-wall_t1);
op_exit();
free(cell);
free(edge);
free(ecell);
free(bedge);
free(becell);
free(bound);
free(x);
free(q);
free(qold);
free(res);
free(adt);
}
int main(int argc, char **argv)
{
// OP initialisation
op_init(argc,argv,2);
int *becell, *ecell, *bound, *bedge, *edge, *cell;
double *x, *q, *qold, *adt, *res;
int nnode,ncell,nedge,nbedge,niter;
double rms;
//timer
double cpu_t1, cpu_t2, wall_t1, wall_t2;
// read in grid
op_printf("reading in grid \n");
FILE *fp;
if ( (fp = fopen("./new_grid.dat","r")) == NULL) {
op_printf("can't open file new_grid.dat\n"); exit(-1);
}
if (fscanf(fp,"%d %d %d %d \n",&nnode, &ncell, &nedge, &nbedge) != 4) {
op_printf("error reading from new_grid.dat\n"); exit(-1);
}
cell = (int *) malloc(4*ncell*sizeof(int));
edge = (int *) malloc(2*nedge*sizeof(int));
ecell = (int *) malloc(2*nedge*sizeof(int));
bedge = (int *) malloc(2*nbedge*sizeof(int));
becell = (int *) malloc( nbedge*sizeof(int));
bound = (int *) malloc( nbedge*sizeof(int));
x = (double *) malloc(2*nnode*sizeof(double));
q = (double *) malloc(4*ncell*sizeof(double));
qold = (double *) malloc(4*ncell*sizeof(double));
res = (double *) malloc(4*ncell*sizeof(double));
adt = (double *) malloc( ncell*sizeof(double));
for (int n=0; n<nnode; n++) {
if (fscanf(fp,"%lf %lf \n",&x[2*n], &x[2*n+1]) != 2) {
op_printf("error reading from new_grid.dat\n"); exit(-1);
}
}
for (int n=0; n<ncell; n++) {
if (fscanf(fp,"%d %d %d %d \n",&cell[4*n ], &cell[4*n+1],
&cell[4*n+2], &cell[4*n+3]) != 4) {
op_printf("error reading from new_grid.dat\n"); exit(-1);
}
}
for (int n=0; n<nedge; n++) {
if (fscanf(fp,"%d %d %d %d \n",&edge[2*n], &edge[2*n+1],
&ecell[2*n],&ecell[2*n+1]) != 4) {
op_printf("error reading from new_grid.dat\n"); exit(-1);
}
}
for (int n=0; n<nbedge; n++) {
if (fscanf(fp,"%d %d %d %d \n",&bedge[2*n],&bedge[2*n+1],
&becell[n], &bound[n]) != 4) {
op_printf("error reading from new_grid.dat\n"); exit(-1);
}
}
fclose(fp);
// set constants and initialise flow field and residual
op_printf("initialising flow field \n");
gam = 1.4f;
gm1 = gam - 1.0f;
cfl = 0.9f;
eps = 0.05f;
double mach = 0.4f;
double alpha = 3.0f*atan(1.0f)/45.0f;
double p = 1.0f;
double r = 1.0f;
double u = sqrt(gam*p/r)*mach;
double e = p/(r*gm1) + 0.5f*u*u;
qinf[0] = r;
qinf[1] = r*u;
qinf[2] = 0.0f;
qinf[3] = r*e;
for (int n=0; n<ncell; n++) {
for (int m=0; m<4; m++) {
q[4*n+m] = qinf[m];
res[4*n+m] = 0.0f;
}
}
// declare sets, pointers, datasets and global constants
op_set nodes = op_decl_set(nnode, "nodes");
op_set edges = op_decl_set(nedge, "edges");
op_set bedges = op_decl_set(nbedge, "bedges");
op_set cells = op_decl_set(ncell, "cells");
op_map pedge = op_decl_map(edges, nodes,2,edge, "pedge");
op_map pecell = op_decl_map(edges, cells,2,ecell, "pecell");
op_map pbedge = op_decl_map(bedges,nodes,2,bedge, "pbedge");
op_map pbecell = op_decl_map(bedges,cells,1,becell,"pbecell");
op_map pcell = op_decl_map(cells, nodes,4,cell, "pcell");
op_dat p_bound = op_decl_dat(bedges,1,"int" ,bound,"p_bound");
op_dat p_x = op_decl_dat(nodes ,2,"double",x ,"p_x");
op_dat p_q = op_decl_dat(cells ,4,"double",q ,"p_q");
//op_dat p_qold = op_decl_dat(cells ,4,"double",qold ,"p_qold");
//op_dat p_adt = op_decl_dat(cells ,1,"double",adt ,"p_adt");
//op_dat p_res = op_decl_dat(cells ,4,"double",res ,"p_res");
// p_res, p_adt and p_qold now declared as a temp op_dats during
// the execution of the time-marching loop
op_decl_const2("gam",1,"double",&gam);
op_decl_const2("gm1",1,"double",&gm1);
op_decl_const2("cfl",1,"double",&cfl);
op_decl_const2("eps",1,"double",&eps);
op_decl_const2("mach",1,"double",&mach);
op_decl_const2("alpha",1,"double",&alpha);
op_decl_const2("qinf",4,"double",qinf);
op_diagnostic_output();
double g_ncell = op_get_size(cells);
//initialise timers for total execution wall time
op_timers(&cpu_t1, &wall_t1);
// main time-marching loop
niter = 1000;
for(int iter=1; iter<=niter; iter++) {
double* tmp_elem = NULL;
op_dat p_res = op_decl_dat_temp(cells ,4,"double",tmp_elem,"p_res");
op_dat p_adt = op_decl_dat_temp(cells ,1,"double",tmp_elem,"p_adt");
op_dat p_qold = op_decl_dat_temp(cells ,4,"double",qold ,"p_qold");
// save old flow solution
op_par_loop_save_soln("save_soln",cells,
op_arg_dat(p_q,-1,OP_ID,4,"double",OP_READ),
op_arg_dat(p_qold,-1,OP_ID,4,"double",OP_WRITE));
// predictor/corrector update loop
for(int k=0; k<2; k++) {
// calculate area/timstep
op_par_loop_adt_calc("adt_calc",cells,
op_arg_dat(p_x,0,pcell,2,"double",OP_READ),
op_arg_dat(p_x,1,pcell,2,"double",OP_READ),
op_arg_dat(p_x,2,pcell,2,"double",OP_READ),
op_arg_dat(p_x,3,pcell,2,"double",OP_READ),
op_arg_dat(p_q,-1,OP_ID,4,"double",OP_READ),
op_arg_dat(p_adt,-1,OP_ID,1,"double",OP_WRITE));
// calculate flux residual
op_par_loop_res_calc("res_calc",edges,
op_arg_dat(p_x,0,pedge,2,"double",OP_READ),
op_arg_dat(p_x,1,pedge,2,"double",OP_READ),
op_arg_dat(p_q,0,pecell,4,"double",OP_READ),
op_arg_dat(p_q,1,pecell,4,"double",OP_READ),
op_arg_dat(p_adt,0,pecell,1,"double",OP_READ),
op_arg_dat(p_adt,1,pecell,1,"double",OP_READ),
op_arg_dat(p_res,0,pecell,4,"double",OP_INC),
op_arg_dat(p_res,1,pecell,4,"double",OP_INC));
op_par_loop_bres_calc("bres_calc",bedges,
op_arg_dat(p_x,0,pbedge,2,"double",OP_READ),
op_arg_dat(p_x,1,pbedge,2,"double",OP_READ),
op_arg_dat(p_q,0,pbecell,4,"double",OP_READ),
op_arg_dat(p_adt,0,pbecell,1,"double",OP_READ),
op_arg_dat(p_res,0,pbecell,4,"double",OP_INC),
op_arg_dat(p_bound,-1,OP_ID,1,"int",OP_READ));
// update flow field
rms = 0.0;
op_par_loop_update("update",cells,
op_arg_dat(p_qold,-1,OP_ID,4,"double",OP_READ),
op_arg_dat(p_q,-1,OP_ID,4,"double",OP_WRITE),
op_arg_dat(p_res,-1,OP_ID,4,"double",OP_RW),
op_arg_dat(p_adt,-1,OP_ID,1,"double",OP_READ),
op_arg_gbl(&rms,1,"double",OP_INC));
}
// print iteration history
rms = sqrt(rms/(double)g_ncell );
if (iter%100 == 0)
op_printf(" %d %10.5e \n",iter,rms);
if (iter%1000 == 0 && g_ncell == 720000){ //defailt mesh -- for validation testing
//op_printf(" %d %3.16f \n",iter,rms);
double diff=fabs((100.0*(rms/0.0001060114637578))-100.0);
op_printf("\n\nTest problem with %d cells is within %3.15E %% of the expected solution\n",720000, diff);
if(diff < 0.00001) {
op_printf("This test is considered PASSED\n");
}
else {
op_printf("This test is considered FAILED\n");
}
}
if (op_free_dat_temp(p_res) < 0)
op_printf("Error: temporary op_dat %s cannot be removed\n",p_res->name);
if (op_free_dat_temp(p_adt) < 0)
op_printf("Error: temporary op_dat %s cannot be removed\n",p_adt->name);
if (op_free_dat_temp(p_qold) < 0)
op_printf("Error: temporary op_dat %s cannot be removed\n",p_qold->name);
}
op_timers(&cpu_t2, &wall_t2);
op_timing_output();
op_printf("Max total runtime = %f\n",wall_t2-wall_t1);
op_exit();
free(cell);
free(edge);
free(ecell);
free(bedge);
free(becell);
free(bound);
free(x);
free(q);
free(qold);
free(res);
free(adt);
}