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/*
* Copyright (c) 2001-2002 The Trustees of Indiana University.
* All rights reserved.
* Copyright (c) 1998-2001 University of Notre Dame.
* All rights reserved.
* Copyright (c) 1994-1998 The Ohio State University.
* All rights reserved.
*
* This file is part of the LAM/MPI software package. For license
* information, see the LICENSE file in the top level directory of the
* LAM/MPI source distribution.
*
* $HEADER$
*
* $Id: wtime.c,v 6.5 2002/12/11 19:15:15 jsquyres Exp $
*
* Function: - return wall clock time
* Returns: - wall clock time in seconds
*/
#include <mpi.h>
#include <mpisys.h>
#include <net.h>
/*@
MPI_Wtime - Returns an elapsed time on the calling processor
Return value:
Time in seconds since an arbitrary time in the past.
Notes:
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'.
Notes for Fortran:
This function is declared as 'DOUBLE PRECISION MPI_WTIME()' in
Fortran.
.seealso: MPI_Wtick, MPI_Comm_get_attr
.N ACK
@*/
double MPI_Wtime(void)
{
return(ttime());
}
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