PGAGetNumProcs

Langue: en

Version: 300509 (debian - 07/07/09)

Section: 4 (Pilotes et protocoles réseau)

Sommaire

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.

INPUT PARAMETERS

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!);
 exit(-1);
 }