MPI_T_PVAR_RESET(3)

💖 MPI_T_PVAR_RESET 💖

okay bestie, so this is a page from the Open MPI manual, section 3 (that's the library-calls girlies 💅). It's all about MPI_T_pvar_reset — say it with me now — the little function that hits undo on a performance variable. 🎀

---

✨ NAME ✨

MPI_T_pvar_reset — reset the value of a performance variable 🦋

---

🌸 SYNTAX 🌸

C Syntax

#include <mpi.h>

int MPI_T_pvar_reset(MPI_T_pvar_session session, MPI_T_pvar_handle handle)

---

🫶 INPUT PARAMETERS 🫶

• session — the performance experiment session. like, the whole ~vibe container~ bestie 💜
• handle — a performance variable handle, or the special value MPI_T_PVAR_ALL_HANDLES if you wanna do the most 💅

---

🔥 DESCRIPTION 🔥

So MPI_T_pvar_reset takes the performance variable that's specified by the handle in handle (yes, it said handle twice, that's just how it is, don't @ me 😭) and sets it back to its initial value. Fresh start. Clean slate. Main character reset arc. ✨

And if you pass the special value MPI_T_PVAR_ALL_HANDLES in handle? Bestie. It resets ALL the read-write handles in the session you specified in session. Every single one. Iconic group-chat-clearing energy. 👑

---

💀 ERRORS 💀

MPI_T_pvar_reset will fail if:

• MPI_T_ERR_NOT_INITIALIZED — the MPI Tools interface isn't initialized. like, you can't reset anything if the whole thing hasn't even woken up yet 🙈
• MPI_T_ERR_INVALID_HANDLE — the handle is invalid. fake handle, no cap 💀
• MPI_T_ERR_INVALID_SESSION — the session argument is not a valid session. that session does not exist bestie 😭
• MPI_T_ERR_PVAR_NO_WRITE — the variable cannot be reset. it said no, and it means no 🚫

---

👀 SEE ALSO 👀

• MPI_T_pvar_handle_alloc
• MPI_T_pvar_get_info
• MPI_T_pvar_session_create
• MPI_T_pvar_write

---

🎀 COPYRIGHT 🎀

Copyright 2003-2026, The Open MPI Community 🫶

---

and that's the whole page bestie!! Open MPI, dated Sep 10, 2026, and it's MPI_T_PVAR_RESET(3) — go forth and reset those variables, you absolute legend 💖✨🌸🦋💅👑