SHMEM_MY_PE(3)

✨ SHMEM_MY_PE(3) ✨

okay so bestie, we're in the Open MPI manpage corner of the internet and today's main character is shmem_my_pe 💅 this is the SHMEM_MY_PE(3) page, and it's literally about finding out who you are — well, which PE you are 🦋

💖 NAME 💖

shmem_my_pe, my_pe, _my_pe — returns the virtual PE number of the calling PE. no cap, that's the whole vibe.

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🌸 SYNOPSIS 🌸

C or C++:

#include <mpp/shmem.h>

int shmem_my_pe (void)
int my_pe (void)

Fortran:

include 'mpp/shmem.fh'
I = SHMEM_MY_PE ()
I = MY_PE ()

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🎀 DESCRIPTION 🎀

okay so my_pe() or shmem_my_pe() return the processing element (PE) number of the calling PE. it takes no arguments — zero, nada, it just knows 🧚 it's giving "I already know who I am" energy, periodt.

the result is an integer between 0 and npes - 1, where npes is the total number of PEs executing the current program. so yes, the index starts at 0, bestie, not 1 — classic ✨

See also:

intro_shmem(3) shmem_n_pes(3) shmem_init(3)

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👑 Copyright 👑

2003-2026, The Open MPI Community

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and that's the whole page, bestie — short, sweet, iconic, ate 💅 see u in the group chat, mwah 🫶

SHMEM_MY_PE(3) · Open MPI · Sep 10, 2026 ⭐