MPI_Info_fromint(3)

💖 NAME 💖

MPI_Info_fromint — bestie, this one takes an integer handle and turns it into an MPI_Info ✨ that's literally it, that's the whole job 🫶

oh also hiii, we're in the MPI manual, section 3, mwah 💅

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🦋 SYNOPSIS 🦋

MPI_Info MPI_Info_fromint(int info)

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🌸 INPUT PARAMETERS 🌸

• info — the info, but make it an integer 👑 (an info handle, but, like, the int version)

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🎀 THREAD AND INTERRUPT SAFETY 🎀

okay so here's the vibe check 👇

This routine is thread-safe 💚 which means you can absolutely let multiple threads use it at the same time and you do not need to bring your own user-provided thread locks. no gatekeeping, everyone's welcome, we love to see it 😌✨

BUT. 🚨 It is not interrupt safe. Not even a little. 🙈

Why, you ask? Typically it's because of memory allocation routines — stuff like malloc, or other non-MPICH runtime routines — and those lil guys are themselves not interrupt-safe. so the interrupt-safety does not pass the vibe check 😭 it's giving "don't try this at home."

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and that's the whole page, bestie!! go forth and convert your ints 💜

<cute>kisses, this was MPI_Info_fromint(3) from the MPI manual, dated 4/10/2026 — mwah, stan, slay 🍓🧚‍♀️</cute>