Re: [OMPI users] Error code for I/O operations

2021-07-01 Thread Aurelien Bouteiller via users
Eric, Error codes are **not** mandated to be consistent across ranks in the MPI standard. Although file errors are not expected to cause the program to abort, there is no special case for I/O in that regard in the MPI standard. The Open MPI implementation acts accordingly and will not

[OMPI users] Error code for I/O operations

2021-06-30 Thread Eric Chamberland via users
Hi, I have a simple question about error codes returned by MPI_File_*_all* and MPI_File_open/close functions: If an error is returned will it be the same for *all* processes? In other worlds, are error codes communicated under the hood so we, end users, can avoid to add "reduce" on those