MPI_Wtime(3)

1MPI_Wtime(3)                        LAM/MPI                       MPI_Wtime(3)
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NAME

6       MPI_Wtime -  Returns an elapsed time on the calling processor
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SYNOPSIS

9       #include <mpi.h>
10       double MPI_Wtime(void)
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RETURN VALUE

13       Time in seconds since an arbitrary time in the past.
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NOTES

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

25       This function is declared as DOUBLE PRECISION MPI_WTIME() in Fortran.
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MORE INFORMATION

33       For more information, please see the official MPI Forum web site, which
34       contains  the  text of both the MPI-1 and MPI-2 standards.  These docu‐
35       ments contain detailed information about each  MPI  function  (most  of
36       which is not duplicated in these man pages).
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38       http://www.mpi-forum.org/
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ACKNOWLEDGEMENTS

43       The  LAM Team would like the thank the MPICH Team for the handy program
44       to generate man pages  ("doctext"  from  ftp://ftp.mcs.anl.gov/pub/sow‐
45       ing/sowing.tar.gz  ), the initial formatting, and some initial text for
46       most of the MPI-1 man pages.
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LOCATION

49       wtime.c
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53LAM/MPI 7.1.2                      2/23/2006                      MPI_Wtime(3)