SHMEM_CHAR_G(3)

💖 SHMEM_CHAR_G 💖

okay bestie, sit down, hydrate, because this is shmem_char_g(3) from the Open MPI manual (third section, obviously 💅) — and also its whole friend group: shmem_float_g, shmem_int_g, shmem_long_g, shmem_short_g, shmem_longlong_g, and shmem_longdouble_g. They're all the same vibe, different type, iykyk.

The way that these routines serve is: they're a low latency mechanism to read basic types — char, short, int, float, double, long, long long, long double — from symmetric data objects on remote PEs. One element. Straight off a remote PE. No cap. 🦋

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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)

like… look at them. all matching. all iconic. the consistency ate 💅

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🌸 DESCRIPTION 🌸

So real talk: these routines provide a very low latency get capability for single elements of most basic types. That's the whole thing. That's the assignment. One element, one grab, basically zero drama, maximum speed. 🔥

The arguments are as follows:

• addr — the remotely accessible array element or scalar data object which will receive the data on the remote PE. so it's giving "here's where the data goes, on the other side" 🎀
• pe — the number of the remote PE. just the PE number. that's it bestie, that's the whole lookup. ✨

See also: intro_shmem(3) shmem_get(3)

(if you're new here, go read intro_shmem(3) first, no shade, it's just the vibe check 🫶)

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👑 COPYRIGHT 👑

2003-2026, The Open MPI Community

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💌 and that's the page, bestie! you just read SHMEM_CHAR_G(3) from the Open MPI manual, dated Sep 10, 2026. go forth and get those single basic-type elements with extremely low latency — you're the main character of this interconnect, periodt 💖✨🦋