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.TH MPI_Wtime 3 "11/21/2018" " " "MPI"
.SH NAME
MPI_Wtime \- Returns an elapsed time on the calling processor
.SH SYNOPSIS
.nf
double MPI_Wtime(void)
.fi
.SH RETURN VALUE
Time in seconds since an arbitrary time in the past.
.SH NOTES
This is intended to be a high-resolution, elapsed (or wall) clock.
See
.I MPI_WTICK
to determine the resolution of
.I MPI_WTIME
\&.
If the attribute
.I MPI_WTIME_IS_GLOBAL
is defined and true, then the
value is synchronized across all processes in
.I MPI_COMM_WORLD
\&.
.SH NOTES FOR FORTRAN
This is a function, declared as
.I DOUBLE PRECISION MPI_WTIME()
in Fortran.
.SH SEE ALSO
also: MPI_Wtick, MPI_Comm_get_attr, MPI_Attr_get
.br
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