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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_zsymmetrize_tiles.cpp, normal z -> s, Wed Jan 22 14:40:25 2025
*/
// includes, system
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
// includes, project
#include "magma_v2.h"
#include "magma_lapack.h"
#include "testings.h"
/* ////////////////////////////////////////////////////////////////////////////
-- Testing ssymmetrize
Code is very similar to testing_stranspose.cpp
*/
int main( int argc, char** argv)
{
TESTING_CHECK( magma_init() );
magma_print_environment();
real_Double_t gbytes, gpu_perf, gpu_time, cpu_perf, cpu_time;
float error, work[1];
float c_neg_one = MAGMA_S_NEG_ONE;
float *h_A, *h_R;
magmaFloat_ptr d_A;
magma_int_t i, j, N, nb, size, lda, ldda, mstride, nstride, ntile, tile, offset;
magma_int_t ione = 1;
int status = 0;
magma_opts opts;
opts.parse_opts( argc, argv );
nb = (opts.nb == 0 ? 64 : opts.nb);
mstride = 2*nb;
nstride = 3*nb;
printf("%% uplo = %s, nb = %lld, mstride = %lld, nstride = %lld\n",
lapack_uplo_const(opts.uplo), (long long) nb, (long long) mstride, (long long) nstride );
printf("%% N ntile CPU GByte/s (ms) GPU GByte/s (ms) check\n");
printf("%%==========================================================\n");
for( int itest = 0; itest < opts.ntest; ++itest ) {
for( int iter = 0; iter < opts.niter; ++iter ) {
N = opts.nsize[itest];
lda = N;
ldda = magma_roundup( N, opts.align ); // multiple of 32 by default
size = lda*N;
if ( N < nb ) {
ntile = 0;
} else {
ntile = min( (N - nb)/mstride + 1,
(N - nb)/nstride + 1 );
}
// load each tile, save each tile
gbytes = sizeof(float) * 2.*nb*nb*ntile / 1e9;
TESTING_CHECK( magma_smalloc_cpu( &h_A, size ));
TESTING_CHECK( magma_smalloc_cpu( &h_R, size ));
TESTING_CHECK( magma_smalloc( &d_A, ldda*N ));
/* Initialize the matrix */
for( j = 0; j < N; ++j ) {
for( i = 0; i < N; ++i ) {
h_A[i + j*lda] = MAGMA_S_MAKE( i + j/10000., j );
}
}
/* ====================================================================
Performs operation using MAGMA
=================================================================== */
magma_ssetmatrix( N, N, h_A, lda, d_A, ldda, opts.queue );
gpu_time = magma_sync_wtime( opts.queue );
magmablas_ssymmetrize_tiles( opts.uplo, nb, d_A, ldda, ntile, mstride, nstride, opts.queue );
gpu_time = magma_sync_wtime( opts.queue ) - gpu_time;
gpu_perf = gbytes / gpu_time;
/* =====================================================================
Performs operation using naive in-place algorithm
(LAPACK doesn't implement symmetrize)
=================================================================== */
cpu_time = magma_wtime();
for( tile = 0; tile < ntile; ++tile ) {
offset = tile*mstride + tile*nstride*lda;
for( j = 0; j < nb; ++j ) {
for( i = 0; i < j; ++i ) {
if ( opts.uplo == MagmaLower ) {
h_A[offset + i + j*lda] = MAGMA_S_CONJ( h_A[offset + j + i*lda] );
}
else {
h_A[offset + j + i*lda] = MAGMA_S_CONJ( h_A[offset + i + j*lda] );
}
}
// real diagonal
h_A[offset + j + j*lda] = MAGMA_S_MAKE( MAGMA_S_REAL( h_A[offset + j + j*lda] ), 0 );
}
}
cpu_time = magma_wtime() - cpu_time;
cpu_perf = gbytes / cpu_time;
/* =====================================================================
Check the result
=================================================================== */
magma_sgetmatrix( N, N, d_A, ldda, h_R, lda, opts.queue );
blasf77_saxpy(&size, &c_neg_one, h_A, &ione, h_R, &ione);
error = lapackf77_slange("f", &N, &N, h_R, &lda, work);
printf("%5lld %5lld %7.2f (%7.2f) %7.2f (%7.2f) %s\n",
(long long) N, (long long) ntile,
cpu_perf, cpu_time*1000., gpu_perf, gpu_time*1000.,
(error == 0. ? "ok" : "failed") );
status += ! (error == 0.);
magma_free_cpu( h_A );
magma_free_cpu( h_R );
magma_free( d_A );
fflush( stdout );
}
if ( opts.niter > 1 ) {
printf( "\n" );
}
}
opts.cleanup();
TESTING_CHECK( magma_finalize() );
return status;
}
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