root / testing / ptimer / HPL_ptimer_walltime.c
Historique | Voir | Annoter | Télécharger (4,07 ko)
| 1 |
/*
|
|---|---|
| 2 |
* -- High Performance Computing Linpack Benchmark (HPL)
|
| 3 |
* HPL - 2.0 - September 10, 2008
|
| 4 |
* Antoine P. Petitet
|
| 5 |
* University of Tennessee, Knoxville
|
| 6 |
* Innovative Computing Laboratory
|
| 7 |
* (C) Copyright 2000-2008 All Rights Reserved
|
| 8 |
*
|
| 9 |
* -- Copyright notice and Licensing terms:
|
| 10 |
*
|
| 11 |
* Redistribution and use in source and binary forms, with or without
|
| 12 |
* modification, are permitted provided that the following conditions
|
| 13 |
* are met:
|
| 14 |
*
|
| 15 |
* 1. Redistributions of source code must retain the above copyright
|
| 16 |
* notice, this list of conditions and the following disclaimer.
|
| 17 |
*
|
| 18 |
* 2. Redistributions in binary form must reproduce the above copyright
|
| 19 |
* notice, this list of conditions, and the following disclaimer in the
|
| 20 |
* documentation and/or other materials provided with the distribution.
|
| 21 |
*
|
| 22 |
* 3. All advertising materials mentioning features or use of this
|
| 23 |
* software must display the following acknowledgement:
|
| 24 |
* This product includes software developed at the University of
|
| 25 |
* Tennessee, Knoxville, Innovative Computing Laboratory.
|
| 26 |
*
|
| 27 |
* 4. The name of the University, the name of the Laboratory, or the
|
| 28 |
* names of its contributors may not be used to endorse or promote
|
| 29 |
* products derived from this software without specific written
|
| 30 |
* permission.
|
| 31 |
*
|
| 32 |
* -- Disclaimer:
|
| 33 |
*
|
| 34 |
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
| 35 |
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
| 36 |
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
| 37 |
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY
|
| 38 |
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
| 39 |
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
| 40 |
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
| 41 |
* DATA OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
| 42 |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
| 43 |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
| 44 |
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
| 45 |
* ---------------------------------------------------------------------
|
| 46 |
*/
|
| 47 |
/*
|
| 48 |
* Include files
|
| 49 |
*/
|
| 50 |
#include "hpl.h" |
| 51 |
|
| 52 |
/*
|
| 53 |
* Purpose
|
| 54 |
* =======
|
| 55 |
*
|
| 56 |
* HPL_ptimer_walltime returns the elapsed (wall-clock) time.
|
| 57 |
*
|
| 58 |
*
|
| 59 |
* ---------------------------------------------------------------------
|
| 60 |
*/
|
| 61 |
|
| 62 |
#if defined( HPL_USE_GETTIMEOFDAY )
|
| 63 |
|
| 64 |
#include <sys/time.h> |
| 65 |
#include <sys/resource.h> |
| 66 |
|
| 67 |
#ifdef STDC_HEADERS
|
| 68 |
double HPL_ptimer_walltime( void ) |
| 69 |
#else
|
| 70 |
double HPL_ptimer_walltime()
|
| 71 |
#endif
|
| 72 |
{
|
| 73 |
struct timeval tp;
|
| 74 |
static long start=0, startu; |
| 75 |
|
| 76 |
if( !start )
|
| 77 |
{
|
| 78 |
(void) gettimeofday( &tp, NULL ); |
| 79 |
start = tp.tv_sec; |
| 80 |
startu = tp.tv_usec; |
| 81 |
return( HPL_rzero );
|
| 82 |
} |
| 83 |
(void) gettimeofday( &tp, NULL ); |
| 84 |
|
| 85 |
return( (double)( tp.tv_sec - start ) + |
| 86 |
( (double)( tp.tv_usec-startu ) / 1000000.0 ) ); |
| 87 |
} |
| 88 |
|
| 89 |
#else
|
| 90 |
|
| 91 |
#ifdef STDC_HEADERS
|
| 92 |
double HPL_ptimer_walltime( void ) |
| 93 |
#else
|
| 94 |
double HPL_ptimer_walltime()
|
| 95 |
#endif
|
| 96 |
{
|
| 97 |
return( MPI_Wtime() );
|
| 98 |
} |
| 99 |
|
| 100 |
#endif
|
| 101 |
/*
|
| 102 |
* End of HPL_ptimer_walltime
|
| 103 |
*/
|