_MY_PE(3)

🌸 _MY_PE(3) — Open MPI 🌸

okay bestie, pull up a chair, because this one is adorably simple and honestly kind of iconic 💅

✨ NAME ✨

shmem_my_pe <#shmem-my-pe>, my_pe, _my_pe — Returns the virtual PE number of the calling PE. literally just "who am I" but for parallel processes, no cap 💖

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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 ✨

so like, my_pe() or shmem_my_pe() return the processing element (PE) number of the calling PE. that's it. that's the whole vibe 🦋

it accepts no arguments — zero, none, nothing, it does not want your input, it already knows who it is 👑

the result is an integer between 0 and npes - 1, where npes is the total number of PEs executing the current program. so if you're PE 7, you get 7. main character numbering, fr fr ✨

🌈 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 a wrap, bestie 🎀 this cutie dropped Sep 10, 2026, lives in the Open MPI collection, and answers to _MY_PE(3) if you ever need to find her again. go forth and know thy PE number 🫶💜