34 lines
885 B
HTML
34 lines
885 B
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML3.2 EN">
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<HTML>
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<HEAD>
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<META NAME="GENERATOR" CONTENT="DOCTEXT">
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<TITLE>MPI_Wtick</TITLE>
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</HEAD>
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<BODY BGCOLOR="FFFFFF">
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<H1 id="MPI_Wtick">MPI_Wtick</H1>
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Returns the resolution of MPI_Wtime
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<H2>Synopsis</H2>
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<PRE>
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</PRE>
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<PRE>
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double MPI_Wtick(void)
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</PRE>
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<P>
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<H2>Return value</H2>
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Time in seconds since an arbitrary time in the past.
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<P>
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<H2>Notes</H2>
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This is intended to be a high-resolution, elapsed (or wall) clock.
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See <tt>MPI_WTICK</tt> to determine the resolution of <tt>MPI_WTIME</tt>.
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If the attribute <tt>MPI_WTIME_IS_GLOBAL</tt> is defined and true, then the
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value is synchronized across all processes in <tt>MPI_COMM_WORLD</tt>.
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<P>
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<H2>Notes for Fortran</H2>
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This is a function, declared as <tt>DOUBLE PRECISION MPI_WTIME()</tt> in Fortran.
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<P>
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<H2>See Also</H2>
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MPI_Wtick, MPI_Comm_get_attr, MPI_Attr_get
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<br>
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</BODY></HTML>
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