Repository navigation
Expand file tree
/
Copy pathmytimer.cpp
More file actions
109 lines (93 loc) · 2.85 KB
/
Copy pathmytimer.cpp
File metadata and controls
109 lines (93 loc) · 2.85 KB
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
//@HEADER
// ************************************************************************
//
// HPCCG: Simple Conjugate Gradient Benchmark Code
// Copyright (2006) Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA
// Questions? Contact Michael A. Heroux (maherou@sandia.gov)
//
// ************************************************************************
//@HEADER
/////////////////////////////////////////////////////////////////////////
// Function to return time in seconds.
// If compiled with no flags, return CPU time (user and system).
// If compiled with -DWALL, returns elapsed time.
/////////////////////////////////////////////////////////////////////////
#ifdef HAVE_MPI
#include <mpi.h> // If this routine is compiled with -DHAVE_MPI
// then include mpi.h
double mytimer(void)
{
return(MPI_Wtime());
}
#elif defined(UseClock)
#include <time.hpp>
double mytimer(void)
{
clock_t t1;
static clock_t t0=0;
static double CPS = CLOCKS_PER_SEC;
double d;
if (t0 == 0) t0 = clock();
t1 = clock() - t0;
d = t1 / CPS;
return(d);
}
#elif defined(WALL)
#include <cstdlib>
#include <sys/time.h>
#include <sys/resource.h>
double mytimer(void)
{
struct timeval tp;
static long start=0, startu;
if (!start)
{
gettimeofday(&tp, NULL);
start = tp.tv_sec;
startu = tp.tv_usec;
return(0.0);
}
gettimeofday(&tp, NULL);
return( ((double) (tp.tv_sec - start)) + (tp.tv_usec-startu)/1000000.0 );
}
#elif defined(UseTimes)
#include <cstdlib>
#include <sys/times.h>
#include <unistd.h>
double mytimer(void)
{
struct tms ts;
static double ClockTick=0.0;
if (ClockTick == 0.0) ClockTick = (double) sysconf(_SC_CLK_TCK);
times(&ts);
return( (double) ts.tms_utime / ClockTick );
}
#else
#include <cstdlib>
#include <sys/time.h>
#include <sys/resource.h>
double mytimer(void)
{
struct rusage ruse;
getrusage(RUSAGE_SELF, &ruse);
return( (double)(ruse.ru_utime.tv_sec+ruse.ru_utime.tv_usec / 1000000.0) );
}
#endif