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
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
|
/*
-- MAGMA (version 2.9.0) --
Univ. of Tennessee, Knoxville
Univ. of California, Berkeley
Univ. of Colorado, Denver
@date January 2025
@precisions normal z -> c d s
*/
// includes, system
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
// includes, project
#include "flops.h"
#include "magma_v2.h"
#include "magma_lapack.h"
#include "testings.h"
#define COMPLEX
/* ////////////////////////////////////////////////////////////////////////////
-- Testing zgeqp3_gpu
*/
int main( int argc, char** argv)
{
TESTING_CHECK( magma_init() );
magma_print_environment();
real_Double_t gflops, gpu_perf, gpu_time, cpu_perf=0, cpu_time=0;
magmaDoubleComplex *h_A, *h_R, *tau, *h_work;
magmaDoubleComplex_ptr d_A, dtau, d_work;
magma_int_t *jpvt;
magma_int_t M, N, K, n2, lda, lwork, j, info, min_mn;
int status = 0;
magma_opts opts;
opts.parse_opts( argc, argv );
double tol = opts.tolerance * lapackf77_dlamch("E");
printf("%% M N CPU Gflop/s (sec) GPU Gflop/s (sec) ||A*P - Q*R||_F\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 < K || N < K || K <= 0 ) {
printf( "%5lld %5lld %5lld skipping because zgeqp3 requires M >= K, N >= K, K(the rank) >= 0\n",
(long long) M, (long long) N, (long long) K );
continue;
}
min_mn = min(M, N);
lda = M;
n2 = lda*N;
gflops = FLOPS_ZGEQRF( M, N ) / 1e9;
// get lwork from expert interface
magma_int_t geqp3_lhwork_bytes[1] = {-1};
magma_int_t geqp3_ldwork_bytes[1] = {-1};
magma_zgeqp3_expert_gpu_work(
M, N, NULL, lda, NULL, NULL,
NULL, geqp3_lhwork_bytes, NULL, geqp3_ldwork_bytes,
&info, opts.queue );
lwork = magma_ceildiv( geqp3_ldwork_bytes[0], sizeof(magmaDoubleComplex) );
if ( opts.check )
lwork = max( lwork, M*N + N );
#ifdef COMPLEX
double *rwork;
TESTING_CHECK( magma_dmalloc_cpu( &rwork, 2*N ));
#endif
TESTING_CHECK( magma_imalloc_cpu( &jpvt, N ));
TESTING_CHECK( magma_zmalloc_cpu( &tau, min_mn ));
TESTING_CHECK( magma_zmalloc_cpu( &h_A, n2 ));
TESTING_CHECK( magma_zmalloc_pinned( &h_R, n2 ));
TESTING_CHECK( magma_zmalloc_pinned( &h_work, lwork ));
TESTING_CHECK( magma_zmalloc( &dtau, min_mn ));
TESTING_CHECK( magma_zmalloc( &d_A, lda*N ));
TESTING_CHECK( magma_zmalloc( &d_work, lwork ));
/* Initialize the matrix */
magma_generate_matrix( opts, M, N, h_R, lda );
/* Make h_A of rank K */
magmaDoubleComplex alpha = MAGMA_Z_MAKE( 1., 0. );
magmaDoubleComplex beta = MAGMA_Z_MAKE( 0., 0. );
blasf77_zgemm("N", "N", &M, &N, &K, &alpha, h_R, &lda, h_R, &lda,
&beta, h_A, &lda);
lapackf77_zlacpy( MagmaFullStr, &M, &N, h_A, &lda, h_R, &lda );
/* =====================================================================
Performs operation using LAPACK
=================================================================== */
if ( opts.lapack ) {
for( j = 0; j < N; j++)
jpvt[j] = 0;
cpu_time = magma_wtime();
lapackf77_zgeqp3( &M, &N, h_R, &lda, jpvt, tau, h_work, &lwork,
#ifdef COMPLEX
rwork,
#endif
&info );
cpu_time = magma_wtime() - cpu_time;
cpu_perf = gflops / cpu_time;
if (info != 0) {
printf("lapack_zgeqp3 returned error %lld: %s.\n",
(long long) info, magma_strerror( info ));
}
}
/* ====================================================================
Performs operation using MAGMA
=================================================================== */
lapackf77_zlacpy( MagmaFullStr, &M, &N, h_A, &lda, h_R, &lda );
for( j = 0; j < N; j++)
jpvt[j] = 0;
/* copy A to gpu */
magma_zsetmatrix( M, N, h_R, lda, d_A, lda, opts.queue );
/* call gpu-interface */
gpu_time = magma_wtime();
magma_zgeqp3_gpu( M, N, d_A, lda, jpvt, dtau, d_work, lwork,
#ifdef COMPLEX
NULL,
#endif
&info );
gpu_time = magma_wtime() - gpu_time;
/* copy outputs to cpu */
magma_zgetmatrix( M, N, d_A, lda, h_R, lda, opts.queue );
magma_zgetvector( min_mn, dtau, 1, tau, 1, opts.queue );
gpu_perf = gflops / gpu_time;
if (info != 0) {
printf("magma_zgeqp3 returned error %lld: %s.\n",
(long long) info, magma_strerror( info ));
}
/* =====================================================================
Check the result
=================================================================== */
if ( opts.lapack ) {
printf("%5lld %5lld %7.2f (%7.2f) %7.2f (%7.2f)",
(long long) M, (long long) N, cpu_perf, cpu_time, gpu_perf, gpu_time );
}
else {
printf("%5lld %5lld --- ( --- ) %7.2f (%7.2f)",
(long long) M, (long long) N, gpu_perf, gpu_time );
}
if ( opts.check ) {
double error, ulp;
ulp = lapackf77_dlamch( "P" );
// Compute norm( A*P - Q*R )
error = lapackf77_zqpt01( &M, &N, &min_mn, h_A, h_R, &lda,
tau, jpvt, h_work, &lwork );
error *= ulp;
printf(" %8.2e %s\n", error, (error < tol ? "ok" : "failed"));
status += ! (error < tol);
}
else {
printf(" --- \n");
}
#ifdef COMPLEX
magma_free_cpu( rwork );
#endif
magma_free_cpu( jpvt );
magma_free_cpu( tau );
magma_free_cpu( h_A );
magma_free_pinned( h_R );
magma_free_pinned( h_work );
magma_free( dtau );
magma_free( d_A );
magma_free( d_work );
fflush( stdout );
}
if ( opts.niter > 1 ) {
printf( "\n" );
}
}
opts.cleanup();
TESTING_CHECK( magma_finalize() );
return status;
}
|
