1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
/*
* -- High Performance Computing Linpack Benchmark (HPL)
* HPL - 2.0 - September 10, 2008
* Antoine P. Petitet
* University of Tennessee, Knoxville
* Innovative Computing Laboratory
* (C) Copyright 2000-2008 All Rights Reserved
*
* -- Copyright notice and Licensing terms:
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions, and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgement:
* This product includes software developed at the University of
* Tennessee, Knoxville, Innovative Computing Laboratory.
*
* 4. The name of the University, the name of the Laboratory, or the
* names of its contributors may not be used to endorse or promote
* products derived from this software without specific written
* permission.
*
* -- Disclaimer:
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ---------------------------------------------------------------------
*/
/*
* Include files
*/
#include "hpl.h"
/*
* Purpose
* =======
*
* HPL_timer_cputime returns the cpu time. If HPL_USE_CLOCK is defined,
* the clock() function is used to return an approximation of processor
* time used by the program. The value returned is the CPU time used so
* far as a clock_t; to get the number of seconds used, the result is
* divided by CLOCKS_PER_SEC. This function is part of the ANSI/ISO C
* standard library. If HPL_USE_TIMES is defined, the times() function
* is used instead. This function returns the current process times.
* times() returns the number of clock ticks that have elapsed since the
* system has been up. Otherwise and by default, the standard library
* function getrusage() is used.
*
* ---------------------------------------------------------------------
*/
#if defined( HPL_USE_CLOCK )
#include <time.h>
#ifdef HPL_STDC_HEADERS
double HPL_timer_cputime( void )
#else
double HPL_timer_cputime()
#endif
{
static double cps = CLOCKS_PER_SEC;
double d;
clock_t t1;
static clock_t t0 = 0;
if( t0 == 0 ) t0 = clock();
t1 = clock() - t0;
d = (double)(t1) / cps;
return( d );
}
#elif defined( HPL_USE_TIMES )
#include <sys/times.h>
#include <unistd.h>
#ifdef HPL_STDC_HEADERS
double HPL_timer_cputime( void )
#else
double HPL_timer_cputime()
#endif
{
clock_t t1;
struct tms ts;
static double ClockTick = HPL_rzero;
if( ClockTick == HPL_rzero ) ClockTick = (double)(sysconf(_SC_CLK_TCK));
(void) times( &ts );
return( (double)(ts.tms_utime) / ClockTick );
}
#elif defined( HPL_USE_GETPROCESSTIMES )
#include <time.h>
#include <windows.h>
#ifdef HPL_STDC_HEADERS
double HPL_timer_cputime( void )
#else
double HPL_timer_cputime()
#endif
{
FILETIME creation, exit, kernel, user;
GetProcessTimes( GetCurrentProcess(), &creation, &exit, &kernel, &user );
return (*(LONGLONG*)&kernel+*(LONGLONG*)&user)*1e-7;
}
/* #elif defined( HPL_USE_GETRUSAGE ) */
#else
#include <sys/time.h>
#include <sys/resource.h>
#ifdef HPL_STDC_HEADERS
double HPL_timer_cputime( void )
#else
double HPL_timer_cputime()
#endif
{
struct rusage ruse;
(void) getrusage( RUSAGE_SELF, &ruse );
return( (double)( ruse.ru_utime.tv_sec ) +
( (double)( ruse.ru_utime.tv_usec ) / 1000000.0 ) );
}
/*
#else
#ifdef HPL_STDC_HEADERS
double HPL_timer_cputime( void )
#else
double HPL_timer_cputime()
#endif
{
return( HPL_TIMER_ERROR );
}
*/
#endif
/*
* End of HPL_timer_cputime
*/
|
