MPI_Init_thread(3) | MPI | MPI_Init_thread(3) |
MPI_Init_thread - Initialize the MPI execution environment
int MPI_Init_thread(int *argc, char ***argv, int required, int *provided)
MPI specifies no command-line arguments but does allow an MPI implementation to make use of them. See MPI_INIT for a description of the command line arguments supported by MPI_INIT and MPI_INIT_THREAD .
The valid values for the level of thread support are:
Note that the Fortran binding for this routine does not have the argc and argv arguments. ( MPI_INIT_THREAD(required, provided, ierror) )
All MPI routines (except MPI_Wtime and MPI_Wtick ) return an error value; C routines as the value of the function and Fortran routines in the last argument. Before the value is returned, the current MPI error handler is called. By default, this error handler aborts the MPI job. The error handler may be changed with MPI_Comm_set_errhandler (for communicators), MPI_File_set_errhandler (for files), and MPI_Win_set_errhandler (for RMA windows). The MPI-1 routine MPI_Errhandler_set may be used but its use is deprecated. The predefined error handler MPI_ERRORS_RETURN may be used to cause error values to be returned. Note that MPI does not guarantee that an MPI program can continue past an error; however, MPI implementations will attempt to continue whenever possible.
MPI_Init, MPI_Finalize
2/22/2022 |