35 lines
682 B
Groff
35 lines
682 B
Groff
.TH MPI_Wtime 3 "11/10/2017" " " "MPI"
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.SH NAME
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MPI_Wtime \- Returns an elapsed time on the calling processor
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.SH SYNOPSIS
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.nf
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double MPI_Wtime( void )
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.fi
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.SH RETURN VALUE
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Time in seconds since an arbitrary time in the past.
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.SH NOTES
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This is intended to be a high-resolution, elapsed (or wall) clock.
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See
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.I MPI_WTICK
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to determine the resolution of
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.I MPI_WTIME
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\&.
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If the attribute
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.I MPI_WTIME_IS_GLOBAL
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is defined and true, then the
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value is synchronized across all processes in
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.I MPI_COMM_WORLD
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\&.
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.SH NOTES FOR FORTRAN
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This is a function, declared as
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.I DOUBLE PRECISION MPI_WTIME()
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in Fortran.
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.SH SEE ALSO
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also: MPI_Wtick, MPI_Comm_get_attr, MPI_Attr_get
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.br
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