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/*
-- MAGMA (version 2.5.4) --
Univ. of Tennessee, Knoxville
Univ. of California, Berkeley
Univ. of Colorado, Denver
@date October 2020
@generated from testing/testing_zpotrf.cpp, normal z -> d, Thu Oct 8 23:05:41 2020
*/
// 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"
/* ////////////////////////////////////////////////////////////////////////////
-- Testing dpotrf
*/
int main( int argc, char** argv)
{
TESTING_CHECK( magma_init() );
magma_print_environment();
// constants
const double c_neg_one = MAGMA_D_NEG_ONE;
const magma_int_t ione = 1;
// locals
real_Double_t gflops, gpu_perf, gpu_time, cpu_perf, cpu_time;
double *h_A, *h_R;
magma_int_t N, n2, lda, info;
double Anorm, error, work[1], *sigma;
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("%% ngpu = %lld, uplo = %s\n", (long long) opts.ngpu, lapack_uplo_const(opts.uplo) );
printf("%% N CPU Gflop/s (sec) GPU Gflop/s (sec) ||R_magma - R_lapack||_F / ||R_lapack||_F\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 = lda*N;
gflops = FLOPS_DPOTRF( N ) / 1e9;
TESTING_CHECK( magma_dmalloc_cpu( &h_A, n2 ));
TESTING_CHECK( magma_dmalloc_cpu( &sigma, N ));
TESTING_CHECK( magma_dmalloc_pinned( &h_R, n2 ));
/* Initialize the matrix */
magma_generate_matrix( opts, N, N, h_A, lda, sigma );
lapackf77_dlacpy( MagmaFullStr, &N, &N, h_A, &lda, h_R, &lda );
if (opts.verbose) {
printf( "A = " ); magma_dprint( N, N, h_A, lda );
}
/* ====================================================================
Performs operation using MAGMA
=================================================================== */
gpu_time = magma_wtime();
magma_dpotrf( opts.uplo, N, h_R, lda, &info );
gpu_time = magma_wtime() - gpu_time;
gpu_perf = gflops / gpu_time;
if (info != 0) {
printf("magma_dpotrf returned error %lld: %s.\n",
(long long) info, magma_strerror( info ));
}
if ( opts.lapack ) {
/* =====================================================================
Performs operation using LAPACK
=================================================================== */
cpu_time = magma_wtime();
lapackf77_dpotrf( lapack_uplo_const(opts.uplo), &N, h_A, &lda, &info );
cpu_time = magma_wtime() - cpu_time;
cpu_perf = gflops / cpu_time;
if (info != 0) {
printf("lapackf77_dpotrf returned error %lld: %s.\n",
(long long) info, magma_strerror( info ));
}
/* =====================================================================
Check the result compared to LAPACK
=================================================================== */
blasf77_daxpy(&n2, &c_neg_one, h_A, &ione, h_R, &ione);
#ifndef HAVE_HIP
Anorm = lapackf77_dlange("f", &N, &N, h_A, &lda, work);
error = lapackf77_dlange("f", &N, &N, h_R, &lda, work) / Anorm;
#else
// TODO: use dlange when the herk/syrk implementations are standardized.
// For HIP, the current herk/syrk routines overwrite the entire diagonal
// blocks of the matrix, so using dlange causes the error check to fail
Anorm = safe_lapackf77_dlansy( "f", lapack_uplo_const(opts.uplo), &N, h_A, &lda, work );
error = safe_lapackf77_dlansy( "f", lapack_uplo_const(opts.uplo), &N, h_R, &lda, work ) / Anorm;
#endif
printf("%5lld %7.2f (%7.2f) %7.2f (%7.2f) %8.2e %s\n",
(long long) N, cpu_perf, cpu_time, gpu_perf, gpu_time,
error, (error < tol ? "ok" : "failed") );
status += ! (error < tol);
}
else {
printf("%5lld --- ( --- ) %7.2f (%7.2f) --- \n",
(long long) N, gpu_perf, gpu_time );
}
magma_free_cpu( h_A );
magma_free_cpu( sigma );
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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