Linux Certif

Toute la documentation sur la certification Linux LPI

MPI_Wtime

NAME

MPI_Wtime - Returns an elapsed time on the calling processor

SYNOPSIS

 #include "mpi.h"
 double MPI_Wtime()
 

RETURN VALUE

Time in seconds since an arbitrary time in the past.

NOTES

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 .

NOTES FOR FORTRAN

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

SEE ALSO

also: MPI_Wtick, MPI_Attr_get

LOCATION

wtime.c