What is MPI_Initialized?

MPI library

MPI (Message Passing Interface) is a library that enables you to write parallel programs in C or Fortran77. The library uses commonly available operating system services to create parallel processes and exchange information among these processes.

MPI_Initialized

This function indicates if the MPI_Init method was called in a program.

Syntax

int MPI_Initialized(int *flag)

Parameters

• flag acts as an output parameter that returns true if the MPI_Init or MPI_Init_thread is called, and false otherwise.

Return value

The function returns an error if it is unsuccessful. By default, the error aborts the MPI job.

In case of success, it returns MPI_SUCCESS, the value returned upon successful termination of any MPI routine.