MPI_Wtime function

Article
09/14/2018

Returns an elapsed time on the calling processor.

Syntax

double MPIAPI MPI_Wtime(void);

Parameters

This function has no parameters.

Return value

Time in seconds since an arbitrary time in the past.

Fortran

    DOUBLE PRECISION MPI_WTIME()

Remarks

This is intended to be a high-resolution, elapsed (or wall) clock. See MPI_Wtick to determine the resolution of MPI_Wtime. If the attribute MPI_WTIME_IS_GLOBAL is defined and true, then the value is synchronized across all processes in MPI_COMM_WORLD.

This is a function, declared as DOUBLE PRECISION MPI_WTIME() in Fortran.

Requirements

Product	HPC Pack 2012 MS-MPI Redistributable Package, HPC Pack 2008 R2 MS-MPI Redistributable Package, HPC Pack 2008 MS-MPI Redistributable Package or HPC Pack 2008 Client Utilities
Header	Mpi.h; Mpif.h
Library	Msmpi.lib
DLL	Msmpi.dll