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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 "lapack.hh"
#include "lapack/flops.hh"
#include "print_matrix.hh"
#include "error.hh"
#include "lapacke_wrappers.hh"
#include <vector>
#if LAPACK_VERSION >= 30400 // >= 3.4.0
//------------------------------------------------------------------------------
template< typename scalar_t >
void test_gemqrt_work( Params& params, bool run )
{
using real_t = blas::real_type< scalar_t >;
using blas::min;
using blas::max;
// get & mark input values
lapack::Side side = params.side();
lapack::Op trans = params.trans();
int64_t m = params.dim.m();
int64_t n = params.dim.n();
int64_t k = params.dim.k();
int64_t nb = params.nb();
int64_t align = params.align();
// geqrt requires min( m, n ) >= nb; use nb = 0.5 min( m, n ).
if (nb > min( m, n )) {
nb = max( 1, min( m, n ) / 2 );
params.nb() = nb;
}
// mark non-standard output values
params.ref_time();
params.ref_gflops();
params.gflops();
if (! run)
return;
//---------- setup
int64_t ldv;
if (side == lapack::Side::Right) {
ldv = roundup( blas::max( 1, m ), align );
}
else {
ldv = roundup( blas::max( 1, n ), align );
}
int64_t ldt = roundup( nb, align );
int64_t ldc = roundup( blas::max( 1, m ), align );
size_t size_V = (size_t) ldv * k;
size_t size_T = (size_t) ldt * k;
size_t size_C = (size_t) ldc * n;
std::vector< scalar_t > V( size_V );
std::vector< scalar_t > T( size_T );
std::vector< scalar_t > C_tst( size_C );
std::vector< scalar_t > C_ref( size_C );
int64_t idist = 1;
int64_t iseed[4] = { 0, 1, 2, 3 };
lapack::larnv( idist, iseed, V.size(), &V[0] );
lapack::larnv( idist, iseed, T.size(), &T[0] );
lapack::larnv( idist, iseed, C_tst.size(), &C_tst[0] );
C_ref = C_tst;
// Calling this to set up the matrices
lapack::geqrt( m, n, nb, &V[0], ldv, &T[0], ldt );
//---------- run test
testsweeper::flush_cache( params.cache() );
double time = testsweeper::get_wtime();
int64_t info_tst = lapack::gemqrt( side, trans, m, n, k, nb, &V[0], ldv, &T[0], ldt, &C_tst[0], ldc );
time = testsweeper::get_wtime() - time;
if (info_tst != 0) {
fprintf( stderr, "lapack::gemqrt returned error %lld\n", llong( info_tst ) );
}
params.time() = time;
//double gflop = lapack::Gflop< scalar_t >::gemqrt( side, trans, m, n, k, nb );
//params.gflops() = gflop / time;
if (params.ref() == 'y' || params.check() == 'y') {
//---------- run reference
testsweeper::flush_cache( params.cache() );
time = testsweeper::get_wtime();
int64_t info_ref = LAPACKE_gemqrt( to_char( side ), to_char( trans ), m, n, k, nb, &V[0], ldv, &T[0], ldt, &C_ref[0], ldc );
time = testsweeper::get_wtime() - time;
if (info_ref != 0) {
fprintf( stderr, "LAPACKE_gemqrt returned error %lld\n", llong( info_ref ) );
}
params.ref_time() = time;
//params.ref_gflops() = gflop / time;
//---------- check error compared to reference
real_t error = 0;
if (info_tst != info_ref) {
error = 1;
}
error += abs_error( C_tst, C_ref );
params.error() = error;
params.okay() = (error == 0); // expect lapackpp == lapacke
}
}
#endif // LAPACK >= 3.4.0
//------------------------------------------------------------------------------
void test_gemqrt( Params& params, bool run )
{
#if LAPACK_VERSION >= 30400 // >= 3.4.0
switch (params.datatype()) {
case testsweeper::DataType::Single:
test_gemqrt_work< float >( params, run );
break;
case testsweeper::DataType::Double:
test_gemqrt_work< double >( params, run );
break;
case testsweeper::DataType::SingleComplex:
test_gemqrt_work< std::complex<float> >( params, run );
break;
case testsweeper::DataType::DoubleComplex:
test_gemqrt_work< std::complex<double> >( params, run );
break;
default:
throw std::runtime_error( "unknown datatype" );
break;
}
#else
fprintf( stderr, "gemqrt requires LAPACK >= 3.4.0\n\n" );
exit(0);
#endif
}
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