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
|
/*
-- MAGMA (version 2.9.0) --
Univ. of Tennessee, Knoxville
Univ. of California, Berkeley
Univ. of Colorado, Denver
@date January 2025
@generated from testing/testing_zungqr_gpu.cpp, normal z -> d, Wed Jan 22 14:40:33 2025
@author Stan Tomov
@author Mathieu Faverge
@author Mark Gates
*/
// includes, system
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <assert.h>
// includes, project
#include "flops.h"
#include "magma_v2.h"
#include "magma_lapack.h"
#include "testings.h"
/* ////////////////////////////////////////////////////////////////////////////
-- Testing dorgqr_gpu
*/
int main( int argc, char** argv)
{
TESTING_CHECK( magma_init() );
magma_print_environment();
real_Double_t gflops, gpu_perf, gpu_time, cpu_perf, cpu_time;
double Anorm, error, work[1];
double c_neg_one = MAGMA_D_NEG_ONE;
double *hA, *hR, *tau, *h_work;
magmaDouble_ptr dA, dT;
magma_int_t m, n, k;
magma_int_t n2, lda, ldda, lwork, min_mn, nb, info;
magma_int_t ione = 1;
int status = 0;
magma_opts opts;
opts.parse_opts( argc, argv );
double tol = opts.tolerance * lapackf77_dlamch("E");
opts.lapack |= opts.check; // check (-c) implies lapack (-l)
printf("%% m n k CPU Gflop/s (sec) GPU Gflop/s (sec) ||R|| / ||A||\n");
printf("%%========================================================================\n");
for( int itest = 0; itest < opts.ntest; ++itest ) {
for( int iter = 0; iter < opts.niter; ++iter ) {
m = opts.msize[itest];
n = opts.nsize[itest];
k = opts.ksize[itest];
if ( m < n || n < k ) {
printf( "%5lld %5lld %5lld skipping because m < n or n < k\n", (long long) m, (long long) n, (long long) k );
continue;
}
lda = m;
ldda = magma_roundup( m, opts.align ); // multiple of 32 by default
n2 = lda*n;
min_mn = min(m, n);
nb = magma_get_dgeqrf_nb( m, n );
lwork = n*nb;
gflops = FLOPS_DORGQR( m, n, k ) / 1e9;
TESTING_CHECK( magma_dmalloc_cpu( &hA, lda*n ));
TESTING_CHECK( magma_dmalloc_cpu( &hR, lda*n ));
TESTING_CHECK( magma_dmalloc_cpu( &tau, min_mn ));
TESTING_CHECK( magma_dmalloc_cpu( &h_work, lwork ));
TESTING_CHECK( magma_dmalloc( &dA, ldda*n ));
TESTING_CHECK( magma_dmalloc( &dT, ( 2*min_mn + magma_roundup( n, 32 ) )*nb ));
magma_generate_matrix( opts, m, n, hA, lda );
lapackf77_dlacpy( MagmaFullStr, &m, &n, hA, &lda, hR, &lda );
Anorm = lapackf77_dlange("f", &m, &n, hA, &lda, work );
/* ====================================================================
Performs operation using MAGMA
=================================================================== */
// first, get QR factors in both hA and dA
// okay that magma_dgeqrf_gpu has special structure for R; R isn't used here.
magma_dsetmatrix( m, n, hA, lda, dA, ldda, opts.queue );
magma_dgeqrf_gpu( m, n, dA, ldda, tau, dT, &info );
if (info != 0) {
printf("magma_dgeqrf_gpu returned error %lld: %s.\n",
(long long) info, magma_strerror( info ));
}
magma_dgetmatrix( m, n, dA, ldda, hA, lda, opts.queue );
gpu_time = magma_wtime();
magma_dorgqr_gpu( m, n, k, dA, ldda, tau, dT, nb, &info );
gpu_time = magma_wtime() - gpu_time;
gpu_perf = gflops / gpu_time;
if (info != 0) {
printf("magma_dorgqr_gpu returned error %lld: %s.\n",
(long long) info, magma_strerror( info ));
}
// Get dA back to the CPU to compare with the CPU result.
magma_dgetmatrix( m, n, dA, ldda, hR, lda, opts.queue );
/* =====================================================================
Performs operation using LAPACK
=================================================================== */
if ( opts.lapack ) {
cpu_time = magma_wtime();
lapackf77_dorgqr( &m, &n, &k, hA, &lda, tau, h_work, &lwork, &info );
cpu_time = magma_wtime() - cpu_time;
cpu_perf = gflops / cpu_time;
if (info != 0) {
printf("lapackf77_dorgqr returned error %lld: %s.\n",
(long long) info, magma_strerror( info ));
}
// compute relative error |R|/|A| := |Q_magma - Q_lapack|/|A|
blasf77_daxpy( &n2, &c_neg_one, hA, &ione, hR, &ione );
error = lapackf77_dlange("f", &m, &n, hR, &lda, work) / Anorm;
bool okay = (error < tol);
status += ! okay;
printf("%5lld %5lld %5lld %7.1f (%7.2f) %7.1f (%7.2f) %8.2e %s\n",
(long long) m, (long long) n, (long long) k,
cpu_perf, cpu_time, gpu_perf, gpu_time,
error, (okay ? "ok" : "failed"));
}
else {
printf("%5lld %5lld %5lld --- ( --- ) %7.1f (%7.2f) --- \n",
(long long) m, (long long) n, (long long) k,
gpu_perf, gpu_time );
}
magma_free_cpu( hA );
magma_free_cpu( hR );
magma_free_cpu( tau );
magma_free_cpu( h_work );
magma_free( dA );
magma_free( dT );
fflush( stdout );
}
if ( opts.niter > 1 ) {
printf( "\n" );
}
}
opts.cleanup();
TESTING_CHECK( magma_finalize() );
return status;
}
|
