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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
@precisions normal z -> c d s
*/
// includes, system
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <assert.h>
#include <algorithm> // std::swap
// includes, project
#include "magma_v2.h"
#include "magma_lapack.h"
#include "testings.h"
/* ////////////////////////////////////////////////////////////////////////////
-- Testing zlarfb_gpu
*/
int main( int argc, char** argv )
{
TESTING_CHECK( magma_init() );
magma_print_environment();
// constants
const magmaDoubleComplex c_zero = MAGMA_Z_ZERO;
const magmaDoubleComplex c_one = MAGMA_Z_ONE;
const magmaDoubleComplex c_neg_one = MAGMA_Z_NEG_ONE;
const magma_int_t ione = 1;
// local variables
magma_int_t M, N, K, size, ldc, ldv, ldt, ldw, ldw2, nv;
magma_int_t ISEED[4] = {0,0,0,1};
double Cnorm, error, work[1];
int status = 0;
// test all combinations of input parameters
magma_side_t side [] = { MagmaLeft, MagmaRight };
magma_trans_t trans [] = { Magma_ConjTrans, MagmaNoTrans };
magma_direct_t direct[] = { MagmaForward, MagmaBackward };
magma_storev_t storev[] = { MagmaColumnwise, MagmaRowwise };
magma_opts opts;
opts.parse_opts( argc, argv );
double tol = opts.tolerance * lapackf77_dlamch("E");
printf("%% M N K side trans direct storev ||R||_F / ||HC||_F\n");
printf("%%=======================================================================\n");
for (int itest = 0; itest < opts.ntest; ++itest) {
M = opts.msize[itest];
N = opts.nsize[itest];
K = opts.ksize[itest];
for (int iside = 0; iside < 2; ++iside) {
for (int itran = 0; itran < 2; ++itran) {
for (int idir = 0; idir < 2; ++idir ) {
for (int istor = 0; istor < 2; ++istor) {
for (int iter = 0; iter < opts.niter; ++iter) {
if ((side[iside] == MagmaLeft && M < K) ||
(side[iside] == MagmaRight && N < K))
{
printf( "%5lld %5lld %5lld %4c skipping because zlarfb requires M >= K (left) or N >= K (right)\n",
(long long) M, (long long) N, (long long) K,
lapacke_side_const(side[iside]) );
continue;
}
ldc = magma_roundup( M, opts.align ); // multiple of 32 by default
ldt = magma_roundup( K, opts.align ); // multiple of 32 by default
ldw = (side[iside] == MagmaLeft ? N : M);
ldw2 = min( M, N );
// (ldv, nv) get swapped later if rowwise
ldv = (side[iside] == MagmaLeft ? M : N);
nv = K;
// Allocate memory for matrices
magmaDoubleComplex *C, *R, *V, *T, *W;
TESTING_CHECK( magma_zmalloc_cpu( &C, ldc*N ));
TESTING_CHECK( magma_zmalloc_cpu( &R, ldc*N ));
TESTING_CHECK( magma_zmalloc_cpu( &V, ldv*K ));
TESTING_CHECK( magma_zmalloc_cpu( &T, ldt*K ));
TESTING_CHECK( magma_zmalloc_cpu( &W, ldw*K ));
magmaDoubleComplex_ptr dC, dV, dT, dW, dW2;
TESTING_CHECK( magma_zmalloc( &dC, ldc*N ));
TESTING_CHECK( magma_zmalloc( &dV, ldv*K ));
TESTING_CHECK( magma_zmalloc( &dT, ldt*K ));
TESTING_CHECK( magma_zmalloc( &dW, ldw*K ));
TESTING_CHECK( magma_zmalloc( &dW2, ldw2*K ));
// C is M x N.
size = ldc*N;
lapackf77_zlarnv( &ione, ISEED, &size, C );
//printf( "C=" ); magma_zprint( M, N, C, ldc );
// V is ldv x nv. See larfb docs for description.
// if column-wise and left, M x K
// if column-wise and right, N x K
// if row-wise and left, K x M
// if row-wise and right, K x N
size = ldv*nv;
lapackf77_zlarnv( &ione, ISEED, &size, V );
if ( storev[istor] == MagmaColumnwise ) {
if ( direct[idir] == MagmaForward ) {
lapackf77_zlaset( MagmaUpperStr, &K, &K, &c_zero, &c_one, V, &ldv );
}
else {
lapackf77_zlaset( MagmaLowerStr, &K, &K, &c_zero, &c_one, &V[(ldv-K)], &ldv );
}
}
else {
// rowwise, swap V's dimensions
std::swap( ldv, nv );
if ( direct[idir] == MagmaForward ) {
lapackf77_zlaset( MagmaLowerStr, &K, &K, &c_zero, &c_one, V, &ldv );
}
else {
lapackf77_zlaset( MagmaUpperStr, &K, &K, &c_zero, &c_one, &V[(nv-K)*ldv], &ldv );
}
}
//printf( "# ldv %lld, nv %lld\n", (long long) ldv, (long long) nv );
//printf( "V=" ); magma_zprint( ldv, nv, V, ldv );
// T is K x K, upper triangular for forward, and lower triangular for backward
magma_int_t k1 = K-1;
size = ldt*K;
lapackf77_zlarnv( &ione, ISEED, &size, T );
if ( direct[idir] == MagmaForward ) {
lapackf77_zlaset( MagmaLowerStr, &k1, &k1, &c_zero, &c_zero, &T[1], &ldt );
}
else {
lapackf77_zlaset( MagmaUpperStr, &k1, &k1, &c_zero, &c_zero, &T[1*ldt], &ldt );
}
//printf( "T=" ); magma_zprint( K, K, T, ldt );
magma_zsetmatrix( M, N, C, ldc, dC, ldc, opts.queue );
magma_zsetmatrix( ldv, nv, V, ldv, dV, ldv, opts.queue );
magma_zsetmatrix( K, K, T, ldt, dT, ldt, opts.queue );
lapackf77_zlarfb( lapack_side_const( side[iside] ), lapack_trans_const( trans[itran] ),
lapack_direct_const( direct[idir] ), lapack_storev_const( storev[istor] ),
&M, &N, &K,
V, &ldv, T, &ldt, C, &ldc, W, &ldw );
//printf( "HC=" ); magma_zprint( M, N, C, ldc );
if ( opts.version == 1 ) {
magma_zlarfb_gpu( side[iside], trans[itran], direct[idir], storev[istor],
M, N, K,
dV, ldv, dT, ldt, dC, ldc, dW, ldw, opts.queue );
}
else {
magma_zlarfb_gpu_gemm( side[iside], trans[itran], direct[idir], storev[istor],
M, N, K,
dV, ldv, dT, ldt, dC, ldc, dW, ldw, dW2, ldw2, opts.queue );
}
magma_zgetmatrix( M, N, dC, ldc, R, ldc, opts.queue );
//printf( "dHC=" ); magma_zprint( M, N, R, ldc );
// compute relative error |HC_magma - HC_lapack| / |HC_lapack|
size = ldc*N;
blasf77_zaxpy( &size, &c_neg_one, C, &ione, R, &ione );
Cnorm = lapackf77_zlange( "Fro", &M, &N, C, &ldc, work );
error = lapackf77_zlange( "Fro", &M, &N, R, &ldc, work ) / Cnorm;
printf( "%5lld %5lld %5lld %4c %5c %6c %6c %8.2e %s\n",
(long long) M, (long long) N, (long long) K,
lapacke_side_const(side[iside]),
lapacke_trans_const(trans[itran]),
lapacke_direct_const(direct[idir]),
lapacke_storev_const(storev[istor]),
error, (error < tol ? "ok" : "failed") );
status += ! (error < tol);
magma_free_cpu( C );
magma_free_cpu( R );
magma_free_cpu( V );
magma_free_cpu( T );
magma_free_cpu( W );
magma_free( dC );
magma_free( dV );
magma_free( dT );
magma_free( dW );
magma_free( dW2 );
fflush( stdout );
}
if ( opts.niter > 1 ) {
printf( "\n" );
}
}}}}
printf( "\n" );
}
opts.cleanup();
TESTING_CHECK( magma_finalize() );
return status;
}
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