MPI_Message_fromint(3)

💖 MPI_Message_fromint 💖

okay bestie, welcome to the MPI manual pages, the group chat where we talk about parallel computing and nothing is ever that deep 🫶 this lil page is MPI_Message_fromint(3) and it's about turning a boring old integer into a full-blown MPI_Message. glow-up of the century, honestly ✨

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✨ NAME ✨

MPI_Message_fromint — converts an integer handle to MPI_Message 💅

like. it takes the number. and gives you the message. iconic behaviour, no notes.

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🌸 SYNOPSIS 🌸

MPI_Message MPI_Message_fromint(int message)

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🎀 INPUT PARAMETERS 🎀

• message — the message, as an integer. yes really, that's the whole input. it's giving "minimalist queen" 👑

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🦋 THREAD AND INTERRUPT SAFETY 🦋

okay so this is the part where we get serious for a sec, bestie, because safety is not a vibe you skip:

Thread-safe: yes. ✅ This routine is thread-safe, meaning you can absolutely let multiple threads use it at the same time and you do not need to bring your own thread locks. no user-provided thread locks required, none, zero, zip, you can put those locks away 🎀

Interrupt safe: no. ❌ Nope. Not this one. The reason is usually that the routine ends up using memory allocation routines like malloc, or other non-MPICH runtime routines, and those are themselves not interrupt-safe. so like, the interrupt-safety vibe check fails upstream, not here. that's just how it is, fr fr 😭

⚠️ so to recap: threads = slay, interrupts = absolutely not. don't be the main character who gets this backwards 💀

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👑 a lil sign-off 👑

that's the whole page, gorgeous. this one came from the MPI manual set, dated 4/10/2026, and it's filed as MPI_Message_fromint(3) — go forth and convert your integers into messages, you absolute legend 🌈⭐💜