MPI_T_CATEGORY_CHANGED(3)

💅 MPI_T_CATEGORY_CHANGED 💅

okay so bestie, welcome to the Open MPI corner of the universe — this one's a little cutie from the MPI Tools interface, and honestly? she's giving "low-key but essential." let's get into it ✨

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🌸 NAME 🌸

MPI_T_category_changed — get a timestamp for the categories ⏰

like, a vibe check on when the categories last got touched. iykyk.

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✨ SYNTAX ✨

🎀 C Syntax 🎀

#include <mpi.h>

int MPI_T_category_changed(int *stamp)

that's it. one argument. no drama. we love a minimal queen 💅

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🫶 INPUT PARAMETERS 🫶

• stamp — a virtual time stamp that tells you the last change to the categories. think of it as the categories' "last seen online" status 👀✨

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🦋 DESCRIPTION 🦋

okay so here's the tea, and it's actually important so listen up 🔥

if two subsequent calls to this routine return the same timestamp, it is guaranteed that no categories have been changed or added. literally nothing moved. the categories are sitting there, comfy, unbothered, main character energy of doing absolutely nothing 🌈

but if the timestamp from the second call is higher, then some categories have been added or changed. something happened. the plot advanced 💀✨

that's the whole deal — compare two stamps, know whether the category world shifted. no cap 🧚

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💜 ERRORS 💜

MPI_T_category_changed will fail if:

• MPI_T_ERR_NOT_INITIALIZED — the MPI Tools interface not initialized. yeah girl, you gotta init first 😭 it's giving "tried to open the app before turning on the phone."

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👑 COPYRIGHT 👑

2003-2026, The Open MPI Community

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and that's the whole page, bestie 🎀 slayed, ate, left no crumbs. this little icon is brought to you by Open MPI — source & version vibes straight from the header, dated Sep 11, 2026 in the footer. mwah 💋🦋💖