NAME¶
PGAGetNumProcs - Returns the size of communicator comm in processes.
DESCRIPTION¶
If comm is NULL or a sequential version of PGAPack is used, PGAGetNumProcs()
returns 1.
- ctx
- - context variable structure pointer
- comm
- - an MPI communicator
OUTPUT PARAMETERS¶
- none
-
SYNOPSIS¶
#include "pgapack.h"
int PGAGetNumProcs(ctx, comm)
PGAContext *ctx
MPI_Comm comm
LOCATION¶
parallel.c
EXAMPLE¶
Example:
PGAContext *ctx;
:
if (PGAGetNumProcs(ctx, MPI_COMM_WORLD) < 4) {
printf("Too few processors for decent performance!0);
exit(-1);
}