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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_zlascl.cpp, normal z -> d, Wed Jan 22 14:40:23 2025
@author Mark Gates
*/
// 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 dlascl
Code is very similar to testing_dlacpy.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;
double error, work[1];
double c_neg_one = MAGMA_D_NEG_ONE;
double *h_A, *h_R;
magmaDouble_ptr d_A;
double cto, cfrom;
magma_int_t M, N, size, lda, ldda, info;
magma_int_t ione = 1;
int status = 0;
magma_int_t ISEED[4] = {0,0,0,1};
magma_opts opts;
opts.parse_opts( argc, argv );
magma_uplo_t uplo[] = { MagmaLower, MagmaUpper, MagmaFull };
double sfmin = lapackf77_dlamch("sfmin");
double bignum = 1 / sfmin;
printf("%% uplo M N CPU GByte/s (ms) GPU GByte/s (ms) check\n");
printf("%%===================================================================\n");
for( int iuplo = 0; iuplo < 3; ++iuplo ) {
for( int itest = 0; itest < opts.ntest; ++itest ) {
for( int iter = 0; iter < opts.niter; ++iter ) {
M = opts.msize[itest];
N = opts.nsize[itest];
//M += 2; // space for insets
//N += 2;
lda = M;
ldda = magma_roundup( M, opts.align ); // multiple of 32 by default
size = lda*N;
if ( uplo[iuplo] == MagmaLower ) {
// load & save lower trapezoid (with diagonal)
if ( M > N ) {
gbytes = 2. * sizeof(double) * (1.*M*N - 0.5*N*(N-1)) / 1e9;
} else {
gbytes = 2. * sizeof(double) * 0.5*M*(M+1) / 1e9;
}
}
else if ( uplo[iuplo] == MagmaUpper ) {
// load & save upper trapezoid (with diagonal)
if ( N > M ) {
gbytes = 2. * sizeof(double) * (1.*M*N - 0.5*M*(M-1)) / 1e9;
} else {
gbytes = 2. * sizeof(double) * 0.5*N*(N+1) / 1e9;
}
}
else {
// load & save entire matrix
gbytes = 2. * sizeof(double) * 1.*M*N / 1e9;
}
TESTING_CHECK( magma_dmalloc_cpu( &h_A, size ));
TESTING_CHECK( magma_dmalloc_cpu( &h_R, size ));
TESTING_CHECK( magma_dmalloc( &d_A, ldda*N ));
/* Initialize the matrix */
lapackf77_dlarnv( &ione, ISEED, &size, h_A );
if ( 0 ) {
// test that the over/underflow algorithm is working (but slower)
// scale by 1e-4
cto = 1e-4;
cfrom = 1;
lapackf77_dlascl( "G", &ione, &ione, &cfrom, &cto, &M, &N, h_A, &lda, &info );
assert( info == 0 );
// this (cto/cfrom) is inf,
// but (1e-4 * cto/cfrom) is ~ 1e308 in double and ~ 1e37 in float
cto = 100.*sqrt( bignum );
cfrom = 1/cto;
}
else {
cto = 1.2345;
cfrom = 3.1415;
}
/* ====================================================================
Performs operation using MAGMA
=================================================================== */
magma_dsetmatrix( M, N, h_A, lda, d_A, ldda, opts.queue );
gpu_time = magma_sync_wtime( opts.queue );
//magmablas_dlascl( uplo[iuplo], 1, 1, cfrom, cto, M-2, N-2, d_A+1+ldda, ldda, opts.queue, &info ); // inset by 1 row & col
magmablas_dlascl( uplo[iuplo], 1, 1, cfrom, cto, M, N, d_A, ldda, opts.queue, &info );
gpu_time = magma_sync_wtime( opts.queue ) - gpu_time;
gpu_perf = gbytes / gpu_time;
if (info != 0) {
printf("magmablas_dlascl returned error %lld: %s.\n",
(long long) info, magma_strerror( info ));
}
/* =====================================================================
Performs operation using LAPACK
=================================================================== */
cpu_time = magma_wtime();
//magma_int_t M2 = M-2; // inset by 1 row & col
//magma_int_t N2 = N-2;
//lapackf77_dlascl( lapack_uplo_const( uplo[iuplo] ), &ione, &ione, &cfrom, &cto, &M2, &N2, h_A+1+lda, &lda, &info );
lapackf77_dlascl( lapack_uplo_const( uplo[iuplo] ), &ione, &ione, &cfrom, &cto, &M, &N, h_A, &lda, &info );
cpu_time = magma_wtime() - cpu_time;
cpu_perf = gbytes / cpu_time;
if (info != 0) {
printf("lapackf77_dlascl returned error %lld: %s.\n",
(long long) info, magma_strerror( info ));
}
/* =====================================================================
Check the result
=================================================================== */
magma_dgetmatrix( M, N, d_A, ldda, h_R, lda, opts.queue );
//magma_dprint( M, N, h_R, lda );
blasf77_daxpy(&size, &c_neg_one, h_A, &ione, h_R, &ione);
error = lapackf77_dlange("f", &M, &N, h_R, &lda, work);
printf("%5s %5lld %5lld %7.2f (%7.2f) %7.2f (%7.2f) %8.2e %s\n",
lapack_uplo_const( uplo[iuplo] ), (long long) M, (long long) N,
cpu_perf, cpu_time*1000., gpu_perf, gpu_time*1000.,
error, (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" );
}
}
printf( "\n" );
}
opts.cleanup();
TESTING_CHECK( magma_finalize() );
return status;
}
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