NAME

MPI_Initialized - Test if the MPI library was ever initialized

SYNOPSIS

#include <mpi.h> 
int MPI_Initialized(int *flag ); 
#include <pmpi.h> 
int PMPI_Initialized(int *flag ); 

OUTPUT PARAMETER

flag - was the MPI library ever intialized (boolean)

DESCRIPTION

The MPI_Initialized() function is used to determine if MPI was ever initialized. If so, flag is set to one. Otherwise, it will be set to zero. This is the only function that may be called before MPI is initialized with MPI_Init().

Note that if MPI is finalized, this function will still return a true status. Use the MPI_Finalized() to check for that case.

PMPI_Initialized() is the profiling version of this function.

ERRORS

All MPI routines except for MPI_Wtime and MPI_Wtick return an error value. The the current MPI error handler is invoked if this return value is not MPI_SUCCESS. The default error handler aborts, but this may be changed with by using the MPI_Errhandler_set() function. The predefined error handler MPI_ERRORS_RETURN may be used to cause error values to be returned instead. Note that MPI does not guarentee that an MPI program can continue past an error. In this implementation, all errors except MPI_ERR_INTERN or MPI_ERR_OTHER should always be recoverable.

MPI_SUCCESS - No error;

MPI_ERR_ARG - Invalid pointer.

SEE ALSO

MPI_Init (3) MPI_Finalize (3) MPI_Finalized (3) MPI_Abort (3)

• Lockless
• MPI Documentation
• MPI_Initialized