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
|
/*******************************************************************************
* Copyright (c) 2006 International Business Machines Corporation. *
* All rights reserved. This program and the accompanying materials *
* are made available under the terms of the Common Public License v1.0 *
* which accompanies this distribution, and is available at *
* http://www.opensource.org/licenses/cpl1.0.php *
* *
* Contributors: *
* Douglas M. Pase - initial API and implementation *
*******************************************************************************/
#include <stdio.h>
#include "Run.h"
#include "Timer.h"
#include "Types.h"
#include "Output.h"
#include "Experiment.h"
// This program allocates and accesses
// a number of blocks of memory, one or more
// for each thread that executes. Blocks
// are divided into sub-blocks called
// pages, and pages are divided into
// sub-blocks called cache lines.
//
// All pages are collected into a list.
// Pages are selected for the list in
// a particular order. Each cache line
// within the page is similarly gathered
// into a list in a particular order.
// In both cases the order may be random
// or linear.
//
// A root pointer points to the first
// cache line. A pointer in the cache
// line points to the next cache line,
// which contains a pointer to the cache
// line after that, and so on. This
// forms a pointer chain that touches all
// cache lines within the first page,
// then all cache lines within the second
// page, and so on until all pages are
// covered. The last pointer contains
// NULL, terminating the chain.
//
// Depending on compile-time options,
// pointers may be 32-bit or 64-bit
// pointers.
int verbose = 0;
int main(int argc, char* argv[]) {
Timer::calibrate(10000);
double clk_res = Timer::resolution();
Experiment e;
if (e.parse_args(argc, argv)) {
return 0;
}
#if defined(UNDEFINED)
e.print();
if (argv != NULL) return 0;
#endif
SpinBarrier sb(e.num_threads);
Run r[e.num_threads];
for (int i = 0; i < e.num_threads; i++) {
r[i].set(e, &sb);
r[i].start();
}
for (int i = 0; i < e.num_threads; i++) {
r[i].wait();
}
int64 ops = Run::ops_per_chain();
double secs = Run::seconds();
Output::print(e, ops, secs, clk_res);
return 0;
}
|
