SHMEM_LONGDOUBLE_G(3)

💅 SHMEM_LONGDOUBLE_G(3) 💅

okay bestie, welcome to the Open MPI man pages, section 3. this one's a whole squad of tiny little getters and honestly? they're iconic. 💖

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✨ NAME ✨

no cap, this page covers a whole friend group:

• shmem_char_g <#shmem-char-g>(3)
• shmem_float_g <#shmem-float-g>(3)
• shmem_int_g <#shmem-int-g>(3)
• shmem_long_g <#shmem-long-g>(3)
• shmem_short_g <#shmem-short-g>(3)
• shmem_longlong_g <#shmem-longlong-g>(3)
• shmem_longdouble_g(3)

and what do they all do?? they're a low latency mechanism to read basic types — that's char, short, int, float, double, long, long long, and long double — from symmetric data objects that live on remote PEs. periodt. ✨

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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)

yes you read that right, shmem_longdouble_g returns a long. that's just what it is. we don't question the lore. 🙈

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🦋 DESCRIPTION 🦋

so like... these routines give you a very low latency get capability for single elements of most basic types. it's giving "one tiny value, zero drama, absolute speed". ⚡

💜 The Arguments 💜

• addr — the remotely accessible array element or scalar data object that will receive the data on the remote PE. bestie, read that again: it's the thing catching the data on the other side, not the thing you're grabbing from. 💅
• pe — the number of the remote PE. that's it, that's the whole job. 👑

🌸 See also: 🌸

• intro_shmem(3)
• shmem_get(3)

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👑 Copyright 👑

2003-2026, The Open MPI Community

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and that's the whole page, bestie 🫶 this little beauty is from the Open MPI collection, dated Sep 10, 2026, and it goes out to my girl SHMEM_LONGDOUBLE_G(3) — go get those remote elements, you ate. 💖✨🎀🦋