What is MPI_Comm_call_errhandler?

MPI library

MPI, short for Message Passing Interface, is a library that allows you to write parallel programs in Fortran77 or C. The library uses common operating system services to exchange information among the parallel processes it creates.

MPI_Comm_call_errhandler

This method calls the error handler installed on a communicator.

Syntax

int MPI_Comm_call_errhandler(
  MPI_Comm comm,
  int errorcode
);

Parameters

• comm is a communicator object describing a group of processes. In many applications, various processes work together, and a communicator describes the processes that a routine initiates.

• errorcode is the error code supplied to the communicator’s error handler.

Return value

If unsuccessful, the function returns an error. The error, by default, aborts the MPI job.

• In case of success, it returns MPI_SUCCESS, which is the value returned upon successful termination of any MPI routine.
• In case of an invalid communicator provided in the function’s argument, MPI_ERR_COM is returned.