MPI_T_PVAR_SESSION_CREATE(3)

💅 MPI_T_PVAR_SESSION_CREATE(3) 💅

okay so bestie, this is from the Open MPI manual, page three of the performance-variable chronicles, and honestly? it's a glow-up for your monitoring game. it's called MPI_T_pvar_session_create (and its ride-or-die MPI_T_pvar_session_free) — Create/free performance variable session. that's the NAME, and yes we're keeping it, she's iconic 💖

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✨ SYNTAX ✨

🎀 C Syntax

like, here's the whole entire vibe, verbatim, don't touch:

#include <mpi.h>

int MPI_T_pvar_session_create(MPI_T_pvar_session *session)

int MPI_T_pvar_session_free(MPI_T_pvar_session *session)

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🦋 DESCRIPTION 🦋

so MPI_T_pvar_session_create creates a session for accessing performance variables. that's the whole point, that's her main character energy. the brand-new session gets handed back to you in the session parameter — like a little gift 🎁

and then MPI_T_pvar_session_free? she releases a session that was allocated by MPI_T_pvar_session_create, and — this is the important bit, ngl — sets the session parameter to MPI_T_PVAR_SESSION_NULL. so after the free, that pointer is literally a void. do not go poking at it. it's giving 🕳️

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💀 ERRORS 💀

🙈 MPI_T_pvar_session_create will fail if:

• MPI_T_ERR_NOT_INITIALIZED — The MPI Tools interface not initialized. girl, you gotta init first, no cap 😭
• MPI_T_ERR_MEMORY — Out of memory. bestie the RAM said no 💀
• MPI_T_ERR_OUT_OF_SESSIONS — No more sessions available. the session store is sold out, try again later 🎟️

🫶 MPI_T_pvar_session_free will fail if:

• MPI_T_ERR_NOT_INITIALIZED — The MPI Tools interface not initialized. same energy, still gotta init 😤
• MPI_T_ERR_INVALID_SESSION — The session parameter is not a valid session. you handed her a fake ID, she's not buying it 🪪

⭐ quick vibe check: these are the official failure modes and nothing else — so if one of these hits, you know exactly which one it is. no guessing required 💅

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👑 COPYRIGHT 👑

2003-2026, The Open MPI Community — protecting the code so we can all keep vibing 🫶

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okay that's the whole page, you ate that 🍓✨ and fr fr, this drop was dated Sep 11, 2026, brought to you by the Open MPI girlies — catch you on the next manpage, bestie, mwah 💖🎀🌈