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/*
-- MAGMA (version 2.9.0) --
Univ. of Tennessee, Knoxville
Univ. of California, Berkeley
Univ. of Colorado, Denver
@date January 2025
@precisions normal z -> s d c
@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 zlaset_band
Code is very similar to testing_zlacpy.cpp
*/
int main( int argc, char** argv)
{
TESTING_CHECK( magma_init() );
magma_print_environment();
#define h_A(i_,j_) (h_A + (i_) + (j_)*lda)
#define d_A(i_,j_) (d_A + (i_) + (j_)*ldda)
// Constants
magmaDoubleComplex c_neg_one = MAGMA_Z_NEG_ONE;
magma_int_t ione = 1;
// Local variables
real_Double_t gbytes, gpu_perf, gpu_time, cpu_perf, cpu_time;
double error, work[1];
magmaDoubleComplex *h_A, *h_R;
magmaDoubleComplex_ptr d_A;
magmaDoubleComplex offdiag = MAGMA_Z_MAKE( 1.2000, 6.7000 );
magmaDoubleComplex diag = MAGMA_Z_MAKE( 3.1415, 2.7183 );
magma_int_t i, j, k, M, N, nb, cnt, size, lda, ldda;
int status = 0;
magma_opts opts;
opts.parse_opts( argc, argv );
nb = (opts.nb == 0 ? 32 : opts.nb);
magma_uplo_t uplo[] = { MagmaLower, MagmaUpper, MagmaFull };
printf("%% K = nb = %lld\n", (long long) nb );
printf("%% uplo M N CPU GByte/s (ms) GPU GByte/s (ms) check\n");
printf("%%=================================================================\n");
for( int iuplo = 0; iuplo < 2; ++iuplo ) {
for( int itest = 0; itest < opts.ntest; ++itest ) {
for( int iter = 0; iter < opts.niter; ++iter ) {
magma_int_t inset = 0;
M = opts.msize[itest] + 2*inset;
N = opts.nsize[itest] + 2*inset;
lda = M;
ldda = magma_roundup( M, opts.align ); // multiple of 32 by default
size = lda*N;
TESTING_CHECK( magma_zmalloc_cpu( &h_A, size ));
TESTING_CHECK( magma_zmalloc_cpu( &h_R, size ));
TESTING_CHECK( magma_zmalloc( &d_A, ldda*N ));
/* Initialize the matrix */
for( j = 0; j < N; ++j ) {
for( i = 0; i < M; ++i ) {
h_A[i + j*lda] = MAGMA_Z_MAKE( i + j/10000., j );
}
}
magma_zsetmatrix( M, N, h_A, lda, d_A, ldda, opts.queue );
/* =====================================================================
Performs operation on CPU
Also count number of elements touched.
=================================================================== */
cpu_time = magma_wtime();
cnt = 0;
for( j=inset; j < N-inset; ++j ) {
for( k=0; k < nb; ++k ) { // set k-th sub- or super-diagonal
if ( k == 0 && j < M-inset ) {
*h_A(j,j) = diag;
cnt += 1;
}
else if ( uplo[iuplo] == MagmaLower && j+k < M-inset ) {
*h_A(j+k,j) = offdiag;
cnt += 1;
}
else if ( uplo[iuplo] == MagmaUpper && j-k >= inset && j-k < M-inset ) {
*h_A(j-k,j) = offdiag;
cnt += 1;
}
}
}
gbytes = cnt / 1e9;
cpu_time = magma_wtime() - cpu_time;
cpu_perf = gbytes / cpu_time;
/* ====================================================================
Performs operation using MAGMA
=================================================================== */
gpu_time = magma_sync_wtime( opts.queue );
magma_int_t mm = M - 2*inset;
magma_int_t nn = N - 2*inset;
magmablas_zlaset_band( uplo[iuplo], mm, nn, nb, offdiag, diag, d_A(inset,inset), ldda, opts.queue );
gpu_time = magma_sync_wtime( opts.queue ) - gpu_time;
gpu_perf = gbytes / gpu_time;
/* =====================================================================
Check the result
=================================================================== */
magma_zgetmatrix( M, N, d_A, ldda, h_R, lda, opts.queue );
//printf( "h_R=" ); magma_zprint( M, N, h_R, lda );
//printf( "h_A=" ); magma_zprint( M, N, h_A, lda );
blasf77_zaxpy(&size, &c_neg_one, h_A, &ione, h_R, &ione);
error = lapackf77_zlange("f", &M, &N, h_R, &lda, work);
printf("%4c %5lld %5lld %7.2f (%7.2f) %7.2f (%7.2f) %s\n",
lapacke_uplo_const( uplo[iuplo] ), (long long) M, (long long) N,
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" );
}
}
printf( "\n" );
}
opts.cleanup();
TESTING_CHECK( magma_finalize() );
return status;
}
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