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// Copyright (c) 2017-2023, University of Tennessee. All rights reserved.
// SPDX-License-Identifier: BSD-3-Clause
// This program is free software: you can redistribute it and/or modify it under
// the terms of the BSD 3-Clause license. See the accompanying LICENSE file.
#include "test.hh"
#include "cblas_wrappers.hh"
#include "lapack_wrappers.hh"
#include "blas/flops.hh"
#include "print_matrix.hh"
// -----------------------------------------------------------------------------
template <typename TX, typename TY>
void test_copy_device_work( Params& params, bool run )
{
using namespace testsweeper;
using scalar_t = blas::scalar_type< TX, TY >;
using real_t = blas::real_type< scalar_t >;
// get & mark input values
int64_t n = params.dim.n();
int64_t incx = params.incx();
int64_t incy = params.incy();
int64_t device = params.device();
int64_t verbose = params.verbose();
// mark non-standard output values
params.gflops();
params.gbytes();
params.ref_time();
params.ref_gflops();
params.ref_gbytes();
// adjust header to msec
params.time.name( "time (ms)" );
params.ref_time.name( "ref time (ms)" );
params.ref_time.width( 13 );
if (! run)
return;
if (blas::get_device_count() == 0) {
params.msg() = "skipping: no GPU devices or no GPU support";
return;
}
// setup
size_t size_x = (n - 1) * std::abs(incx) + 1;
size_t size_y = (n - 1) * std::abs(incy) + 1;
TX* x = new TX[ size_x ];
TX* xref = new TX[ size_x ];
TY* y = new TY[ size_y ];
TY* yref = new TY[ size_y ];
// device specifics
blas::Queue queue( device );
TX* dx;
TY* dy;
// malloc device memory
dx = blas::device_malloc<TX>(size_x, queue);
dy = blas::device_malloc<TY>(size_y, queue);
queue.sync();
int64_t idist = 1;
int iseed[4] = { 0, 0, 0, 1 };
lapack_larnv( idist, iseed, size_x, x );
cblas_copy( n, x, incx, xref, incx );
// todo: should we have different incdx and incdy
// todo: setvector assumes one type TX=TY
blas::device_copy_vector(n, x, std::abs(incx), dx, std::abs(incx), queue);
blas::device_copy_vector(n, y, std::abs(incy), dy, std::abs(incy), queue);
queue.sync();
// test error exits
assert_throw( blas::copy( -1, dx, incx, dy, incy ), blas::Error );
assert_throw( blas::copy( n, dx, 0, dy, incy ), blas::Error );
assert_throw( blas::copy( n, dx, incx, dy, 0 ), blas::Error );
if (verbose >= 1) {
printf( "\n"
"x n=%5lld, inc=%5lld, size=%10lld\n"
"y n=%5lld, inc=%5lld, size=%10lld\n",
llong( n ), llong( incx ), llong( size_x ),
llong( n ), llong( incy ), llong( size_y ) );
}
if (verbose >= 2) {
printf( "x = " ); print_vector( n, x, incx );
printf( "y = " ); print_vector( n, y, incy );
}
// run test
testsweeper::flush_cache( params.cache() );
double time = get_wtime();
blas::copy( n, dx, incx, dy, incy, queue );
queue.sync();
time = get_wtime() - time;
double gflop = blas::Gflop< scalar_t >::copy( n );
double gbyte = blas::Gbyte< scalar_t >::copy( n );
params.time() = time * 1000; // msec
params.gflops() = gflop / time;
params.gbytes() = gbyte / time;
// todo: should we have different incdx and incdy
blas::device_copy_vector(n, dx, std::abs(incx), x, std::abs(incx), queue);
blas::device_copy_vector(n, dy, std::abs(incy), y, std::abs(incy), queue);
queue.sync();
if (verbose >= 2) {
printf( "x2 = " ); print_vector( n, x, incx );
printf( "y2 = " ); print_vector( n, y, incy );
}
if (params.check() == 'y') {
// run reference
testsweeper::flush_cache( params.cache() );
time = get_wtime();
cblas_copy( n, xref, incx, yref, incy );
time = get_wtime() - time;
if (verbose >= 2) {
printf( "xref = " ); print_vector( n, xref, incx );
printf( "yref = " ); print_vector( n, yref, incy );
}
params.ref_time() = time * 1000; // msec
params.ref_gflops() = gflop / time;
params.ref_gbytes() = gbyte / time;
// error = ||xref - x|| + ||yref - y||
cblas_axpy( n, -1.0, x, incx, xref, incx );
cblas_axpy( n, -1.0, y, incy, yref, incy );
real_t error = cblas_nrm2( n, xref, std::abs(incx) )
+ cblas_nrm2( n, yref, std::abs(incy) );
params.error() = error;
// copy must be exact!
params.okay() = (error == 0);
}
delete[] x;
delete[] y;
delete[] xref;
delete[] yref;
blas::device_free( dx, queue );
blas::device_free( dy, queue );
}
// -----------------------------------------------------------------------------
void test_copy_device( Params& params, bool run )
{
switch (params.datatype()) {
case testsweeper::DataType::Single:
test_copy_device_work< float, float >( params, run );
break;
case testsweeper::DataType::Double:
test_copy_device_work< double, double >( params, run );
break;
case testsweeper::DataType::SingleComplex:
test_copy_device_work< std::complex<float>, std::complex<float> >
( params, run );
break;
case testsweeper::DataType::DoubleComplex:
test_copy_device_work< std::complex<double>, std::complex<double> >
( params, run );
break;
default:
throw std::exception();
break;
}
}
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