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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_zhemm_mgpu.cpp, normal z -> s, Wed Jan 22 14:40:21 2025
@author Mark Gates
@author Azzam Haidar
*/
// includes, system
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <assert.h>
// includes, project
#include "flops.h"
#include "magma_v2.h"
#include "magma_lapack.h"
#include "magma_operators.h"
#include "testings.h"
/* ////////////////////////////////////////////////////////////////////////////
-- Testing magma_ssymm_mgpu
*/
int main( int argc, char** argv)
{
TESTING_CHECK( magma_init() );
magma_print_environment();
const float c_neg_one = MAGMA_S_NEG_ONE;
const float alpha = MAGMA_S_MAKE( 3.456, 5.678 );
const float beta = MAGMA_S_MAKE( 1.234, 2.456 );
const magma_int_t ione = 1;
real_Double_t gflops, gpu_perf=0., cpu_perf=0., gpu_time=0., cpu_time=0.;
real_Double_t gpu_perf2=0., gpu_time2=0.;
float error, work[1];
float *hA, *hB, *hC, *hR;
magmaFloat_ptr dA[MagmaMaxGPUs], dB[MagmaMaxGPUs], dC[MagmaMaxGPUs], dwork[MagmaMaxGPUs];
magmaFloat_ptr dA2;
magma_int_t i, j, dev, M, N, K, Moff, Noff, Koff, size, lda, ldb, ldc, ldda, lddb, lddc, nb;
magma_int_t iseed[4] = {0,0,0,1};
int status = 0;
magma_opts opts;
opts.parse_opts( argc, argv );
opts.ngpu = abs( opts.ngpu ); // always uses multi-GPU code
// See testing_sgemm about tolerance.
float eps = lapackf77_slamch("E");
float tol = 3*eps;
// default values
nb = (opts.nb > 0 ? opts.nb : 64);
magma_int_t nodes[MagmaMaxGPUs][MagmaMaxGPUs+2];
magma_int_t nnode = 0;
magma_buildconnection_mgpu( nodes, &nnode, opts.ngpu );
printf("%% GPU communication pattern: nnode %lld\n", (long long) nnode);
for (i = 0; i < nnode; ++i) {
magma_int_t my_ndev = nodes[i][MagmaMaxGPUs];
printf("%% node %lld has %lld GPUs:", (long long) i, (long long) my_ndev );
for (j=0; j < my_ndev; ++j) {
printf(" %lld", (long long) nodes[i][j] );
if (j < my_ndev-1) {
printf(",");
}
}
printf("\n");
}
// number of queues per GPU. Requires ngpu.
magma_int_t nqueue = opts.ngpu;
// number of events per GPU. Requires ngpu.
magma_int_t nevents = opts.ngpu;
magma_queue_t queues[MagmaMaxGPUs][20], queues0[MagmaMaxGPUs];
magma_event_t events[MagmaMaxGPUs][MagmaMaxGPUs*MagmaMaxGPUs + 10];
for( dev = 0; dev < opts.ngpu; ++dev ) {
magma_setdevice( dev );
for( i = 0; i < nqueue; ++i ) {
magma_queue_create( dev, &queues[dev][i] );
}
queues0[dev] = queues[dev][0];
for( i = 0; i < nevents; ++i ) {
magma_event_create( &events[dev][i] );
}
}
printf("%% nb %lld, ngpu %lld, version %lld\n", (long long) nb, (long long) opts.ngpu, (long long) opts.version );
printf("%% M N nb offset CPU Gflop/s (sec) GPU Gflop/s (sec) %s hemm (sec) ||R|| / ||A||*||B||\n", g_platform_str);
printf("%%========================================================================================================\n");
for( int itest = 0; itest < opts.ntest; ++itest ) {
for( int iter = 0; iter < opts.niter; ++iter ) {
M = opts.msize[itest];
N = opts.nsize[itest];
K = (opts.side == MagmaLeft ? M : N);
lda = K;
ldb = M;
ldc = M;
ldda = magma_roundup( lda, opts.align ); // multiple of 32 by default
lddb = magma_roundup( ldb, opts.align ); // multiple of 32 by default
lddc = magma_roundup( ldc, opts.align ); // multiple of 32 by default
magma_int_t lwork = lddc*N + (M*N)*opts.ngpu;
TESTING_CHECK( magma_smalloc_cpu( &hA, lda*K ));
TESTING_CHECK( magma_smalloc_cpu( &hB, ldb*N ));
TESTING_CHECK( magma_smalloc_cpu( &hC, ldc*N ));
TESTING_CHECK( magma_smalloc_pinned( &hR, ldc*N ));
for( dev = 0; dev < opts.ngpu; ++dev ) {
magma_int_t Klocal = ((K / nb) / opts.ngpu + 1) * nb; // over estimate
magma_setdevice( dev );
TESTING_CHECK( magma_smalloc( &dA[dev], ldda*Klocal ));
TESTING_CHECK( magma_smalloc( &dB[dev], lddb*N ));
TESTING_CHECK( magma_smalloc( &dC[dev], lddc*N ));
TESTING_CHECK( magma_smalloc( &dwork[dev], lwork ));
}
if ( opts.check ) {
// for running cuBLAS
magma_setdevice( 0 );
TESTING_CHECK( magma_smalloc( &dA2, ldda*K ));
}
for( int offset = 0; offset < N; offset += nb/2 ) {
if (opts.side == MagmaLeft) {
Moff = M - offset;
Noff = N;
}
else {
Moff = M;
Noff = N - offset;
}
Koff = K - offset;
gflops = FLOPS_SSYMM( MagmaLeft, Moff, Noff ) / 1e9;
size = lda*K;
lapackf77_slarnv( &ione, iseed, &size, hA );
// set opposite triangle to NAN to ensure we don't use it.
magma_int_t K1 = K - 1;
if (opts.uplo == MagmaLower)
lapackf77_slaset( "Upper", &K1, &K1, &MAGMA_S_NAN, &MAGMA_S_NAN, hA + lda, &lda );
else
lapackf77_slaset( "Lower", &K1, &K1, &MAGMA_S_NAN, &MAGMA_S_NAN, hA + 1, &lda );
size = ldb*N;
lapackf77_slarnv( &ione, iseed, &size, hB );
size = ldc*N;
lapackf77_slarnv( &ione, iseed, &size, hC );
lapackf77_slacpy( "Full", &M, &N, hC, &ldc, hR, &ldc );
// for error checks
float Anorm = safe_lapackf77_slansy( "F", lapack_uplo_const(opts.uplo), &Koff, &hA[offset + offset*lda], &lda, work );
float Bnorm = lapackf77_slange( "F", &Moff, &Noff, hB, &ldb, work );
float Cnorm = lapackf77_slange( "F", &Moff, &Noff, hC, &ldc, work );
/* ====================================================================
Performs operation using MAGMA
=================================================================== */
magma_ssetmatrix_1D_col_bcyclic( opts.ngpu, K, K, nb, hA, lda, dA, ldda, queues0 );
for( dev = 0; dev < opts.ngpu; ++dev ) {
magma_setdevice( dev );
magma_ssetmatrix( M, N, hB, ldb, dB[dev], lddb, opts.queue );
// send C to GPU corresponding to offset; not needed everywhere
magma_int_t start_dev = (offset / nb) % opts.ngpu;
if (dev == start_dev) {
magma_ssetmatrix( M, N, hC, ldc, dC[dev], lddc, opts.queue );
}
}
// ssymm_mgpu is synchronous, unlike async, single GPU BLAS
gpu_time = magma_wtime();
// only Left, Lower supported
magmablas_ssymm_mgpu(
opts.side, opts.uplo, Moff, Noff,
alpha, dA, ldda, offset,
dB, lddb,
beta, dC, lddc, dwork, lwork,
opts.ngpu, nb, queues, nqueue, events, nevents, nodes, nnode );
gpu_time = magma_wtime() - gpu_time;
gpu_perf = gflops / gpu_time;
/* ====================================================================
Performs operation using CUBLAS
=================================================================== */
if ( opts.check && iter == 0 ) {
magma_setdevice( 0 );
magma_ssetmatrix( K, K, hA, lda, dA2, ldda, opts.queue );
magma_ssetmatrix( M, N, hB, ldb, dB[0], lddb, opts.queue );
magma_ssetmatrix( M, N, hC, ldc, dwork[0], lddc, opts.queue );
gpu_time2 = magma_sync_wtime(0);
magma_ssymm(
opts.side, opts.uplo, Moff, Noff,
alpha, dA2 + offset + offset*ldda, ldda,
dB[0], lddb,
beta, dwork[0], lddc, opts.queue );
gpu_time2 = magma_sync_wtime(0) - gpu_time2;
gpu_perf2 = gflops / gpu_time2;
}
/* =====================================================================
Performs operation using LAPACK
=================================================================== */
if ( opts.check ) {
cpu_time = magma_wtime();
blasf77_ssymm( lapack_side_const(opts.side),
lapack_uplo_const(opts.uplo), &Moff, &Noff,
&alpha, hA + offset + offset*lda, &lda,
hB, &ldb,
&beta, hC, &ldc );
cpu_time = magma_wtime() - cpu_time;
cpu_perf = gflops / cpu_time;
for (dev=0; dev < opts.ngpu; ++dev) {
magma_setdevice( dev );
magma_sgetmatrix( M, N, dC[dev], lddc, hR, ldc, opts.queue );
// See testing_sgemm for formula.
size = ldc*N;
blasf77_saxpy( &size, &c_neg_one, hC, &ione, hR, &ione );
error = lapackf77_slange( "F", &Moff, &Noff, hR, &ldc, work )
/ (sqrt(float(Koff+2))*fabs(alpha)*Anorm*Bnorm + 2*fabs(beta)*Cnorm);
bool okay = (error < tol);
status += ! okay;
if (dev == 0) {
printf( "%5lld %5lld %5lld %5lld %7.1f (%7.4f) %7.1f (%7.4f) %7.1f (%7.4f) %8.2e %s\n",
(long long) M, (long long) N, (long long) nb, (long long) offset,
cpu_perf, cpu_time,
gpu_perf, gpu_time,
gpu_perf2, gpu_time2,
error, (okay ? "ok" : "failed") );
}
else {
printf( " dev %lld %74s %8.2e %s\n",
(long long) dev, "",
error, (okay ? "ok" : "failed") );
}
}
}
else {
printf( "%5lld %5lld %5lld %5lld --- ( --- ) %7.1f (%7.4f) --- ( --- ) ---\n",
(long long) M, (long long) N, (long long) nb, (long long) offset,
gpu_perf, gpu_time );
}
} // offset
printf( "\n" );
magma_free_cpu( hA );
magma_free_cpu( hB );
magma_free_cpu( hC );
magma_free_pinned( hR );
for( dev = 0; dev < opts.ngpu; ++dev ) {
magma_setdevice( dev );
magma_free( dA[dev] );
magma_free( dB[dev] );
magma_free( dC[dev] );
magma_free( dwork[dev] );
}
if ( opts.check ) {
magma_setdevice( 0 );
magma_free( dA2 );
}
fflush( stdout );
} // iter
if ( opts.niter > 1 ) {
printf( "\n" );
}
}
for( dev = 0; dev < opts.ngpu; ++dev ) {
magma_setdevice( dev );
for( i = 0; i < nqueue; ++i ) {
magma_queue_destroy( queues[dev][i] );
}
for( i = 0; i < nevents; ++i ) {
magma_event_destroy( events[dev][i] );
}
}
opts.cleanup();
TESTING_CHECK( magma_finalize() );
return status;
}
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