MPI_WIN_GET_NAME(3)

💖 MPI_WIN_GET_NAME 💖

okay so bestie, welcome to MPI_WIN_GET_NAME(3), a page from the Open MPI manual 💅 and it's literally about one thing: getting the name of a window. that's the whole plot. no cap. 🎀

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✨ NAME ✨

MPI_Win_get_name — Obtains the name of a window.</p> 🪟✨

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🦋 SYNTAX 🦋

🌸 C Syntax 🌸

#include <mpi.h>

int MPI_Win_get_name(MPI_Win win, char *win_name, int *resultlen)

🌸 Fortran Syntax 🌸

USE MPI
! or the older form: INCLUDE 'mpif.h'
MPI_WIN_GET_NAME(WIN, WIN_NAME, RESULTLEN, IERROR)
     INTEGER WIN, RESULTLEN, IERROR
     CHARACTER*(*) WIN_NAME

🌸 Fortran 2008 Syntax 🌸

USE mpi_f08
MPI_Win_get_name(win, win_name, resultlen, ierror)
     TYPE(MPI_Win), INTENT(IN) :: win
     CHARACTER(LEN=MPI_MAX_OBJECT_NAME), INTENT(OUT) :: win_name
     INTEGER, INTENT(OUT) :: resultlen
     INTEGER, OPTIONAL, INTENT(OUT) :: ierror

three whole syntaxes. she's versatile. main character energy fr fr 👑

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💜 INPUT PARAMETER 💜

• win — the window whose name is gonna get returned (it's a handle, bestie). 🪟

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🎀 OUTPUT PARAMETERS 🎀

• win_name — the name that was previously stored on the window, or an empty string if no such name exists (string). so if it's giving nothing, it's actually giving nothing. 💀
• resultlen — length of the returned name (integer). 🔢
• ierror — Fortran only: error status (integer). 🙈

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🌈 DESCRIPTION 🌈

not me opening this section and finding it literally empty 😭 like the description is just... vibes. nothing here. the details live in the parameters up above, bestie. periodt.

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🔥 ERRORS 🔥

Almost all MPI routines return an error value; C routines as the return result of the function and Fortran routines in the last argument. 👀

Before the error value is returned, the current MPI error handler associated with the communication object (e.g., communicator, window, file) is called. If no communication object is associated with the MPI call, then the call is considered attached to MPI_COMM_SELF and will call the associated MPI error handler. When MPI_COMM_SELF is not initialized (i.e., before MPI_Init/MPI_Init_thread, after MPI_Finalize, or when using the Sessions Model exclusively) the error raises the initial error handler. The initial error handler can be changed by calling MPI_Comm_set_errhandler on MPI_COMM_SELF when using the World model, or the mpi_initial_errhandler CLI argument to mpiexec or info key to MPI_Comm_spawn/MPI_Comm_spawn_multiple. If no other appropriate error handler has been set, then the MPI_ERRORS_RETURN error handler is called for MPI I/O functions and the MPI_ERRORS_ABORT error handler is called for all other MPI functions.

Open MPI includes three predefined error handlers that can be used:

• MPI_ERRORS_ARE_FATAL — Causes the program to abort all connected MPI processes. 💀 shifting the whole squad, immediately.
• MPI_ERRORS_ABORT — An error handler that can be invoked on a communicator, window, file, or session. When called on a communicator, it acts as if MPI_Abort was called on that communicator. If called on a window or file, acts as if MPI_Abort was called on a communicator containing the group of processes in the corresponding window or file. If called on a session, aborts only the local process. 🫡
• MPI_ERRORS_RETURN — Returns an error code to the application. the chill one, honestly. 🌸

MPI applications can also implement their own error handlers by calling:

• MPI_Comm_create_errhandler then MPI_Comm_set_errhandler 🧚
• MPI_File_create_errhandler then MPI_File_set_errhandler 🧚
• MPI_Session_create_errhandler then MPI_Session_set_errhandler or at MPI_Session_init 🧚
• MPI_Win_create_errhandler then MPI_Win_set_errhandler 🧚

Note that MPI does not guarantee that an MPI program can continue past an error. no cap, that's a real warning, bestie. 😭

See the MPI man page for a full list of MPI error codes. 📖

See the Error Handling section of the MPI-3.1 standard for more information. ⭐

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👑 COPYRIGHT 👑

2003-2026, The Open MPI Community 🫶

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and that's the whole page, bestie!! you ate that. 💅✨ source is Open MPI, dated Sep 10, 2026, and it's the MPI_WIN_GET_NAME(3) manual page — iconic, no notes, bye!! 🦋🎀🌈