MPI_Wtime - Returns an elapsed time on the calling processor

       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

LAM/MPI 7.1.4                                       6/24/2006                                       MPI_Wtime(3)

       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/

       MPI_Wtime -  Returns an elapsed time on the calling processor

       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 DOUBLEPRECISIONMPI_WTIME() in Fortran.

       Time in seconds since an arbitrary time in the past.

       MPI_Wtick, MPI_Comm_get_attr

       #include <mpi.h>
       double MPI_Wtime(void)