-
Notifications
You must be signed in to change notification settings - Fork 12
/
main.cpp
88 lines (73 loc) · 3.32 KB
/
main.cpp
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
// MGBench: Multi-GPU Computing Benchmark Suite
// Copyright (c) 2016, Tal Ben-Nun
// Code adapted from MAPS - Memory Access Pattern Specification Framework
// http://maps-gpu.github.io/
// Copyright (c) 2015, A. Barak
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * 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.
// * Neither the names of the copyright holders nor the names of its
// contributors may be used to endorse or promote products derived from this
// software without specific prior written permission.
//
// 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 COPYRIGHT OWNER 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 <cstdio>
#include <gflags/gflags.h>
#include <cuda_runtime.h>
bool TestGoLMAPSMulti(int ngpus);
DEFINE_int32(num_gpus, -1, "Override number of GPUs (or negative to use all available GPUs");
DEFINE_int32(startwith, 1, "Start with a specific number of GPUs");
int main(int argc, char **argv)
{
bool overall = true;
gflags::ParseCommandLineFlags(&argc, &argv, true);
int num_actual_gpus = FLAGS_num_gpus;
if (num_actual_gpus <= 0)
{
if (cudaGetDeviceCount(&num_actual_gpus) != cudaSuccess)
{
printf("Error %d when getting devices (is CUDA enabled?)\n", num_actual_gpus);
return 1;
}
}
if (FLAGS_startwith > num_actual_gpus || FLAGS_startwith <= 0)
{
printf("Starting with invalid amount of GPUs (Requested: %d, available: %d)\n",
FLAGS_startwith, num_actual_gpus);
return 2;
}
printf("Running Game of Life with %d GPUs, starting with %d GPUs\n", num_actual_gpus,
FLAGS_startwith);
for (int G = FLAGS_startwith; G <= num_actual_gpus; ++G)
{
printf("Testing with %d GPUs\n", G);
printf("--------------------\n\n");
overall &= TestGoLMAPSMulti(G);
}
printf("Overall: Test %s\n", overall ? "passed" : "FAILED");
// cudaDeviceReset must be called before exiting in order for profiling and
// tracing tools such as Nsight and Visual Profiler to show complete traces.
cudaError_t cudaStatus = cudaDeviceReset();
if (cudaStatus != cudaSuccess) {
fprintf(stderr, "cudaDeviceReset failed!");
return 3;
}
return overall ? 0 : 4;
}