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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_gpu.cpp, normal z -> c, Wed Jan 22 14:40:32 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 COMPLEX
/* ////////////////////////////////////////////////////////////////////////////
-- Testing cgeqp3_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;
magmaFloatComplex *h_A, *h_R, *tau, *h_work;
magmaFloatComplex_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 );
float tol = opts.tolerance * lapackf77_slamch("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 cgeqp3 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_CGEQRF( 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_cgeqp3_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(magmaFloatComplex) );
if ( opts.check )
lwork = max( lwork, M*N + N );
#ifdef COMPLEX
float *rwork;
TESTING_CHECK( magma_smalloc_cpu( &rwork, 2*N ));
#endif
TESTING_CHECK( magma_imalloc_cpu( &jpvt, N ));
TESTING_CHECK( magma_cmalloc_cpu( &tau, min_mn ));
TESTING_CHECK( magma_cmalloc_cpu( &h_A, n2 ));
TESTING_CHECK( magma_cmalloc_pinned( &h_R, n2 ));
TESTING_CHECK( magma_cmalloc_pinned( &h_work, lwork ));
TESTING_CHECK( magma_cmalloc( &dtau, min_mn ));
TESTING_CHECK( magma_cmalloc( &d_A, lda*N ));
TESTING_CHECK( magma_cmalloc( &d_work, lwork ));
/* Initialize the matrix */
magma_generate_matrix( opts, M, N, h_R, lda );
/* Make h_A of rank K */
magmaFloatComplex alpha = MAGMA_C_MAKE( 1., 0. );
magmaFloatComplex beta = MAGMA_C_MAKE( 0., 0. );
blasf77_cgemm("N", "N", &M, &N, &K, &alpha, h_R, &lda, h_R, &lda,
&beta, h_A, &lda);
lapackf77_clacpy( 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_cgeqp3( &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_cgeqp3 returned error %lld: %s.\n",
(long long) info, magma_strerror( info ));
}
}
/* ====================================================================
Performs operation using MAGMA
=================================================================== */
lapackf77_clacpy( MagmaFullStr, &M, &N, h_A, &lda, h_R, &lda );
for( j = 0; j < N; j++)
jpvt[j] = 0;
/* copy A to gpu */
magma_csetmatrix( M, N, h_R, lda, d_A, lda, opts.queue );
/* call gpu-interface */
gpu_time = magma_wtime();
magma_cgeqp3_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_cgetmatrix( M, N, d_A, lda, h_R, lda, opts.queue );
magma_cgetvector( min_mn, dtau, 1, tau, 1, opts.queue );
gpu_perf = gflops / gpu_time;
if (info != 0) {
printf("magma_cgeqp3 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 ) {
float error, ulp;
ulp = lapackf77_slamch( "P" );
// Compute norm( A*P - Q*R )
error = lapackf77_cqpt01( &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;
}
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