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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 -> s d c
*/
// 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 zhegst
*/
int main( int argc, char** argv)
{
TESTING_CHECK( magma_init() );
magma_print_environment();
// Constants
const magmaDoubleComplex c_neg_one = MAGMA_Z_NEG_ONE;
const magma_int_t ione = 1;
// Local variables
real_Double_t gpu_time, cpu_time;
magmaDoubleComplex *h_A, *h_B, *h_R;
double Anorm, error, work[1];
magma_int_t N, n2, lda, info;
int status = 0;
magma_opts opts;
opts.matrix = "rand_dominant"; // default
opts.parse_opts( argc, argv );
opts.lapack |= opts.check; // check (-c) implies lapack (-l)
double tol = opts.tolerance * lapackf77_dlamch("E");
printf("%% uplo = %s\n", lapack_uplo_const(opts.uplo) );
printf("%% itype N CPU time (sec) GPU time (sec) |R| \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;
n2 = N*lda;
TESTING_CHECK( magma_zmalloc_cpu( &h_A, lda*N ));
TESTING_CHECK( magma_zmalloc_cpu( &h_B, lda*N ));
TESTING_CHECK( magma_zmalloc_pinned( &h_R, lda*N ));
/* ====================================================================
Initialize the matrix
=================================================================== */
// todo: have different options for A and B
magma_generate_matrix( opts, N, N, h_A, lda );
magma_generate_matrix( opts, N, N, h_B, lda );
magma_zpotrf( opts.uplo, N, h_B, lda, &info );
if (info != 0) {
printf("magma_zpotrf returned error %lld: %s.\n",
(long long) info, magma_strerror( info ));
}
lapackf77_zlacpy( MagmaFullStr, &N, &N, h_A, &lda, h_R, &lda );
/* ====================================================================
Performs operation using MAGMA
=================================================================== */
gpu_time = magma_wtime();
magma_zhegst( opts.itype, opts.uplo, N, h_R, lda, h_B, lda, &info );
gpu_time = magma_wtime() - gpu_time;
if (info != 0) {
printf("magma_zhegst returned error %lld: %s.\n",
(long long) info, magma_strerror( info ));
}
/* =====================================================================
Performs operation using LAPACK
=================================================================== */
if ( opts.lapack ) {
cpu_time = magma_wtime();
lapackf77_zhegst( &opts.itype, lapack_uplo_const(opts.uplo),
&N, h_A, &lda, h_B, &lda, &info );
cpu_time = magma_wtime() - cpu_time;
if (info != 0) {
printf("lapackf77_zhegst returned error %lld: %s.\n",
(long long) info, magma_strerror( info ));
}
blasf77_zaxpy( &n2, &c_neg_one, h_A, &ione, h_R, &ione );
Anorm = safe_lapackf77_zlanhe("f", lapack_uplo_const(opts.uplo), &N, h_A, &lda, work );
error = safe_lapackf77_zlanhe("f", lapack_uplo_const(opts.uplo), &N, h_R, &lda, work )
/ Anorm;
bool okay = (error < tol);
status += ! okay;
printf("%3lld %5lld %7.2f %7.2f %8.2e %s\n",
(long long) opts.itype, (long long) N, cpu_time, gpu_time,
error, (okay ? "ok" : "failed"));
}
else {
printf("%3lld %5lld --- %7.2f\n",
(long long) opts.itype, (long long) N, gpu_time );
}
magma_free_cpu( h_A );
magma_free_cpu( h_B );
magma_free_pinned( h_R );
fflush( stdout );
}
if ( opts.niter > 1 ) {
printf( "\n" );
}
}
opts.cleanup();
TESTING_CHECK( magma_finalize() );
return status;
}
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