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/*
-- MAGMA (version 2.9.0) --
Univ. of Tennessee, Knoxville
Univ. of California, Berkeley
Univ. of Colorado, Denver
@date January 2025
@author Mark Gates
@generated from testing/testing_zunmqr_gpu.cpp, normal z -> s, Wed Jan 22 14:40:34 2025
*/
// 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 "magma_operators.h"
#include "testings.h"
/* ////////////////////////////////////////////////////////////////////////////
-- Testing sormqr_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;
float Cnorm, error, work[1];
float c_neg_one = MAGMA_S_NEG_ONE;
magma_int_t ione = 1;
magma_int_t mm, m, n, k, size, info;
magma_int_t ISEED[4] = {0,0,0,1};
magma_int_t nb, ldc, lda, lwork, lwork_max, dt_size;
float *C, *R, *A, *hwork, *tau;
magmaFloat_ptr dC, dA, dT;
int status = 0;
magma_opts opts;
opts.parse_opts( argc, argv );
// need slightly looser bound (60*eps instead of 30*eps) for some tests
opts.tolerance = max( 60., opts.tolerance );
float tol = opts.tolerance * lapackf77_slamch("E");
// test all combinations of input parameters
magma_side_t side [] = { MagmaLeft, MagmaRight };
magma_trans_t trans[] = { MagmaTrans, MagmaNoTrans };
printf("%% M N K side trans CPU Gflop/s (sec) GPU Gflop/s (sec) ||R||_F / ||QC||_F\n");
printf("%%==============================================================================================\n");
for( int itest = 0; itest < opts.ntest; ++itest ) {
for( int iside = 0; iside < 2; ++iside ) {
for( int itran = 0; itran < 2; ++itran ) {
for( int iter = 0; iter < opts.niter; ++iter ) {
m = opts.msize[itest];
n = opts.nsize[itest];
k = opts.ksize[itest];
ldc = magma_roundup( m, opts.align ); // multiple of 32 by default
// A is mm x k == m x k (left) or n x k (right)
mm = (side[iside] == MagmaLeft ? m : n);
nb = magma_get_sgeqrf_nb( mm, k );
lda = magma_roundup( mm, opts.align ); // multiple of 32 by default
gflops = FLOPS_SORMQR( m, n, k, side[iside] ) / 1e9;
if ( side[iside] == MagmaLeft && m < k ) {
printf( "%5lld %5lld %5lld %4c %5c skipping because side=left and m < k\n",
(long long) m, (long long) n, (long long) k,
lapacke_side_const( side[iside] ),
lapacke_trans_const( trans[itran] ) );
continue;
}
if ( side[iside] == MagmaRight && n < k ) {
printf( "%5lld %5lld %5lld %4c %5c skipping because side=right and n < k\n",
(long long) m, (long long) n, (long long) k,
lapacke_side_const( side[iside] ),
lapacke_trans_const( trans[itran] ) );
continue;
}
if ( side[iside] == MagmaLeft ) {
// side = left
lwork_max = (m - k + nb)*(n + nb) + n*nb;
dt_size = ( 2*min(m,k) + magma_roundup( max(m,n), 32) )*nb;
}
else {
// side = right
lwork_max = (n - k + nb)*(m + nb) + m*nb;
dt_size = ( 2*min(n,k) + magma_roundup( max(m,n), 32 ) )*nb;
}
// this rounds it up slightly if needed to agree with lwork query below
lwork_max = magma_int_t( real( magma_smake_lwork( lwork_max )));
TESTING_CHECK( magma_smalloc_cpu( &C, ldc*n ));
TESTING_CHECK( magma_smalloc_cpu( &R, ldc*n ));
TESTING_CHECK( magma_smalloc_cpu( &A, lda*k ));
TESTING_CHECK( magma_smalloc_cpu( &hwork, lwork_max ));
TESTING_CHECK( magma_smalloc_cpu( &tau, k ));
TESTING_CHECK( magma_smalloc( &dC, ldc*n ));
TESTING_CHECK( magma_smalloc( &dA, lda*k ));
TESTING_CHECK( magma_smalloc( &dT, dt_size ));
// C is full, m x n
size = ldc*n;
lapackf77_slarnv( &ione, ISEED, &size, C );
magma_ssetmatrix( m, n, C, ldc, dC, ldc, opts.queue );
// A is mm x k
magma_generate_matrix( opts, mm, k, A, lda );
// compute QR factorization to get Householder vectors in dA, tau, dT
magma_ssetmatrix( mm, k, A, lda, dA, lda, opts.queue );
magma_sgeqrf_gpu( mm, k, dA, lda, tau, dT, &info );
magma_sgetmatrix( mm, k, dA, lda, A, lda, opts.queue );
if (info != 0) {
printf("magma_sgeqrf_gpu returned error %lld: %s.\n",
(long long) info, magma_strerror( info ));
}
/* =====================================================================
Performs operation using LAPACK
=================================================================== */
cpu_time = magma_wtime();
lapackf77_sormqr( lapack_side_const( side[iside] ), lapack_trans_const( trans[itran] ),
&m, &n, &k,
A, &lda, tau, C, &ldc, hwork, &lwork_max, &info );
cpu_time = magma_wtime() - cpu_time;
cpu_perf = gflops / cpu_time;
if (info != 0) {
printf("lapackf77_sormqr returned error %lld: %s.\n",
(long long) info, magma_strerror( info ));
}
/* ====================================================================
Performs operation using MAGMA
=================================================================== */
// query for workspace size
lwork = -1;
magma_sormqr_gpu( side[iside], trans[itran],
m, n, k,
dA, lda, tau, dC, ldc, hwork, lwork, dT, nb, &info );
if (info != 0) {
printf("magma_sormqr_gpu (lwork query) returned error %lld: %s.\n",
(long long) info, magma_strerror( info ));
}
lwork = (magma_int_t) MAGMA_S_REAL( hwork[0] );
if ( lwork < 0 || lwork > lwork_max ) {
printf("Warning: optimal lwork %lld > allocated lwork_max %lld\n", (long long) lwork, (long long) lwork_max );
lwork = lwork_max;
}
// sormqr2 takes a copy of dA in CPU memory
if ( opts.version == 2 ) {
magma_sgetmatrix( mm, k, dA, lda, A, lda, opts.queue );
}
// TODO: sync still needed? on what queue?
gpu_time = magma_sync_wtime( opts.queue ); // sync needed for L,N and R,T cases
if ( opts.version == 1 ) {
magma_sormqr_gpu( side[iside], trans[itran],
m, n, k,
dA, lda, tau, dC, ldc, hwork, lwork, dT, nb, &info );
}
else if ( opts.version == 2 ) {
magma_sormqr2_gpu( side[iside], trans[itran],
m, n, k,
dA, lda, tau, dC, ldc, A, lda, &info );
}
gpu_time = magma_sync_wtime( opts.queue ) - gpu_time;
gpu_perf = gflops / gpu_time;
if (info != 0) {
printf("magma_sormqr_gpu returned error %lld: %s.\n",
(long long) info, magma_strerror( info ));
}
magma_sgetmatrix( m, n, dC, ldc, R, ldc, opts.queue );
/* =====================================================================
compute relative error |QC_magma - QC_lapack| / |QC_lapack|
=================================================================== */
size = ldc*n;
blasf77_saxpy( &size, &c_neg_one, C, &ione, R, &ione );
Cnorm = lapackf77_slange( "Fro", &m, &n, C, &ldc, work );
error = lapackf77_slange( "Fro", &m, &n, R, &ldc, work ) / (magma_ssqrt(m*n) * Cnorm);
printf( "%5lld %5lld %5lld %4c %5c %7.2f (%7.2f) %7.2f (%7.2f) %8.2e %s\n",
(long long) m, (long long) n, (long long) k,
lapacke_side_const( side[iside] ),
lapacke_trans_const( trans[itran] ),
cpu_perf, cpu_time, gpu_perf, gpu_time,
error, (error < tol ? "ok" : "failed") );
status += ! (error < tol);
magma_free_cpu( C );
magma_free_cpu( R );
magma_free_cpu( A );
magma_free_cpu( hwork );
magma_free_cpu( tau );
magma_free( dC );
magma_free( dA );
magma_free( dT );
fflush( stdout );
}
if ( opts.niter > 1 ) {
printf( "\n" );
}
}} // end iside, itran
printf( "\n" );
}
opts.cleanup();
TESTING_CHECK( magma_finalize() );
return status;
}
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