shmem_n_pes

Returns the number of PEs running in a program.

Definitions

C/C++ Synopsis

int shmem_n_pes(void);

Deprecated Synopsis

Deprecated Fortran Synopsis

INTEGER SHMEM_N_PES, N_PES
N_PES = SHMEM_N_PES()

Arguments

None.

Description

The routine returns the number of PEs running in the program.

Return Values

Integer -  Number of PEs running in the OpenSHMEM program.

Notes

As of OpenSHMEM[1.2] the use of _num_pes has been deprecated. Although
OpenSHMEM libraries are required to support the call, users are encouraged
to use shmem_n_pes instead.  The behavior and signature  of the routine
shmem_n_pes remains unchanged from the deprecated _num_pes version.

Examples

C/C++ Example

#include <stdio.h>
#include <shmem.h>

int main(void)
{
   shmem_init();
   int me = shmem_my_pe();
   int npes = shmem_n_pes();
   printf("I am #%d of %d PEs executing this program\n", me, npes);
   shmem_finalize();
   return 0;
}