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
|
/* ************************************************************************
* Copyright (C) 2018-2020 Advanced Micro Devices, Inc. All rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* ************************************************************************ */
#include <cstdlib>
#include <iostream>
#include <rocalution/rocalution.hpp>
using namespace rocalution;
int main(int argc, char* argv[])
{
// Check command line parameters
if(argc == 1)
{
std::cerr << argv[0] << " <matrix> [Num threads]" << std::endl;
exit(1);
}
// Initialize rocALUTION
init_rocalution();
// Check command line parameters for number of OMP threads
if(argc > 2)
{
set_omp_threads_rocalution(atoi(argv[2]));
}
// Print rocALUTION info
info_rocalution();
// rocALUTION objects
LocalVector<double> x;
LocalVector<double> rhs;
LocalVector<double> e;
LocalMatrix<double> mat;
// Read matrix from MTX file
mat.ReadFileMTX(std::string(argv[1]));
// Allocate vectors
x.Allocate("x", mat.GetN());
rhs.Allocate("rhs", mat.GetM());
e.Allocate("e", mat.GetN());
// Initialize rhs such that A 1 = rhs
e.Ones();
mat.Apply(e, &rhs);
// Initial zero guess
x.Zeros();
// Linear Solver
GMRES<LocalMatrix<double>, LocalVector<double>, double> ls;
// Preconditioner
AS<LocalMatrix<double>, LocalVector<double>, double> p; // Additive Schwarz
// RAS<LocalMatrix<double>, LocalVector<double>, double > p; // Restricted Additive Schwarz
// Second level preconditioners
Solver<LocalMatrix<double>, LocalVector<double>, double>** p2;
int n = 2;
p2 = new Solver<LocalMatrix<double>, LocalVector<double>, double>*[n];
for(int i = 0; i < n; ++i)
{
MultiColoredILU<LocalMatrix<double>, LocalVector<double>, double>* mc;
mc = new MultiColoredILU<LocalMatrix<double>, LocalVector<double>, double>;
p2[i] = mc;
}
double tick, tack;
// Initialize preconditioner
p.Set(n, 4, p2);
// Set solver operator
ls.SetOperator(mat);
// Set solver preconditioner
ls.SetPreconditioner(p);
// Verbosity output
// ls.Verbose(2);
// Build solver
ls.Build();
// Move solver to the accelerator
mat.MoveToAccelerator();
x.MoveToAccelerator();
rhs.MoveToAccelerator();
e.MoveToAccelerator();
ls.MoveToAccelerator();
// Print matrix info
mat.Info();
// Start solving time measurement
tick = rocalution_time();
// Solve A x = rhs
ls.Solve(rhs, &x);
// Stop solving time measurement
tack = rocalution_time();
std::cout << "Solver took: " << (tack - tick) / 1e6 << " sec" << std::endl;
// Clear the solver
ls.Clear();
// Free all allocated data
for(int i = 0; i < n; ++i)
{
delete p2[i];
p2[i] = NULL;
}
delete[] p2;
p2 = NULL;
// Compute error L2 norm
e.ScaleAdd(-1.0, x);
double error = e.Norm();
std::cout << "||e - x||_2 = " << error << std::endl;
// Stop rocALUTION platform
stop_rocalution();
return 0;
}
|
