NAME¶
MPI_Wtime - Returns an elapsed time on the calling processor
SYNOPSIS¶
#include <mpi.h>
double MPI_Wtime(void)
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_Wime . 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 function is declared as DOUBLE PRECISION MPI_WTIME() in Fortran.
SEE ALSO¶
MPI_Wtick, MPI_Comm_get_attr
For more information, please see the official MPI Forum web site, which contains
the text of both the MPI-1 and MPI-2 standards. These documents contain
detailed information about each MPI function (most of which is not duplicated
in these man pages).
http://www.mpi-forum.org/
ACKNOWLEDGEMENTS¶
The LAM Team would like the thank the MPICH Team for the handy program to
generate man pages ("doctext" from
ftp://ftp.mcs.anl.gov/pub/sowing/sowing.tar.gz ), the initial
formatting, and some initial text for most of the MPI-1 man pages.