Provided by: openmpi-doc_1.10.2-8ubuntu1_all 

NAME
num_pes, _num_pes, shmem_n_pes - Returns the number of processing elements (PEs) used to run the
application.
SYNOPSIS
C or C++:
#include <mpp/shmem.h>
int _num_pes (void);
int shmem_n_pes (void);
Fortran:
include 'mpp/shmem.fh'
I = NUM_PES ()
I = SHMEM_N_PES ()
DESCRIPTION
num_pes() or shmem_n_pes() return the total number of PEs running in an application.
SEE ALSO
intro_shmem(3), shmem_my_pe(3), shmem_init(3)
1.10.2 Jan 21, 2016 SHMEM_N_PES(3)