SHMEM_LONG_G(3)

💖 SHMEM_LONG_G(3) — the Open MPI glow-up 💖

ok so bestie. this is one of those little Open MPI man pages and it's honestly giving ✨remote data fetch✨ but make it fashion. it's the shmem_long_g family, and yeah the filename says "long" but it's actually a whole squad of getters: shmem_char_g, shmem_float_g, shmem_int_g, shmem_long_g, shmem_short_g, shmem_longlong_g, and shmem_longdouble_g. 🫶

these routines are the low latency besties 💅 — they read basic types (char, short, int, float, double, long, long long, long double) from symmetric data objects on remote PEs. no cap, that's the whole vibe.

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✨ SYNOPSIS ✨

C or C++:

#include <mpp/shmem.h>

char shmem_char_g(const char *addr, int pe)

short shmem_short_g(const short *addr, int pe)

int shmem_int_g(const int *addr, int pe)

long shmem_long_g(const long *addr, int pe)

long shmem_longlong_g(const long long *addr, int pe)

float shmem_float_g(const float *addr, int pe)

double shmem_double_g(const double *addr, int pe)

long shmem_longdouble_g(const long double *addr, int pe)

every single one of those signatures is doing exactly what it looks like, and yes you gotta keep them character for character, bestie, do not freestyle. 🙈

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🌸 DESCRIPTION 🌸

these routines serve up a very low latency get capability for single elements of most basic types. that's it. that's the whole menu. one element, one type, one vibe check. 🦋

it's giving "i just need one lil value off a remote PE and i need it like RIGHT NOW" energy, and honestly? iconic. 👑

the arguments are as follows:

• addr — the remotely accessible array element or scalar data object which will receive the data on the remote PE. 🎀
• pe — the number of the remote PE. that's the friend you're pulling the data from. 🔥

lowkey important: addr is the thing that receives the data on the remote PE. read that twice, bestie, i'm not gonna repeat myself. 💀

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👀 SEE ALSO 👀

• intro_shmem(3)
• shmem_get(3)

go read intro_shmem(3) for the whole lore, and shmem_get(3) if you want the bigger, non-single-element energy. 🌈

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🎀 COPYRIGHT 🎀

2003–2026, The Open MPI Community. periodt. 💜

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and that's the page, bestie! per the footer, this one's from the Open MPI crew, dated Sep 10, 2026, and the manual itself is titled SHMEM_LONG_G(3). slay, go fetch your single element, drink some water, and remember: one element at a time. ⭐🌸💅