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/*
-- MAGMA (version 2.9.0) --
Univ. of Tennessee, Knoxville
Univ. of California, Berkeley
Univ. of Colorado, Denver
@date January 2025
@generated from testing/testing_zgeqp3.cpp, normal z -> d, Wed Jan 22 14:40:35 2025
*/
// 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 REAL
/* ////////////////////////////////////////////////////////////////////////////
-- Testing dgeqp3
*/
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;
double *h_A, *h_R, *tau, *h_work;
magma_int_t *jpvt;
magma_int_t M, N, n2, lda, lwork, j, info, min_mn, nb;
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];
min_mn = min(M, N);
lda = M;
n2 = lda*N;
nb = magma_get_dgeqp3_nb( M, N );
gflops = FLOPS_DGEQRF( M, N ) / 1e9;
lwork = ( N+1 )*nb;
#ifdef REAL
lwork += 2*N;
#endif
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_dmalloc_cpu( &tau, min_mn ));
TESTING_CHECK( magma_dmalloc_cpu( &h_A, n2 ));
TESTING_CHECK( magma_dmalloc_pinned( &h_R, n2 ));
TESTING_CHECK( magma_dmalloc_pinned( &h_work, lwork ));
/* Initialize the matrix */
magma_generate_matrix( opts, M, N, h_A, lda );
lapackf77_dlacpy( 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_dgeqp3( &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_dgeqp3 returned error %lld: %s.\n",
(long long) info, magma_strerror( info ));
}
}
/* ====================================================================
Performs operation using MAGMA
=================================================================== */
lapackf77_dlacpy( MagmaFullStr, &M, &N, h_A, &lda, h_R, &lda );
for( j = 0; j < N; j++)
jpvt[j] = 0;
gpu_time = magma_wtime();
magma_dgeqp3( M, N, h_R, lda, jpvt, tau, h_work, lwork,
#ifdef COMPLEX
rwork,
#endif
&info );
gpu_time = magma_wtime() - gpu_time;
gpu_perf = gflops / gpu_time;
if (info != 0) {
printf("magma_dgeqp3 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_dqpt01( &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 );
fflush( stdout );
}
if ( opts.niter > 1 ) {
printf( "\n" );
}
}
opts.cleanup();
TESTING_CHECK( magma_finalize() );
return status;
}
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