| MPI_Wtime(3) | LAM/MPI | MPI_Wtime(3) |
MPI_Wtime - Returns an elapsed time on the calling processor
#include <mpi.h> double MPI_Wtime(void)
Time in seconds since an arbitrary time in the past.
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 .
This function is declared as DOUBLE PRECISION MPI_WTIME() in Fortran.
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/
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.
wtime.c
| 6/24/2006 | LAM/MPI 7.1.4 |