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/*
Copyright (C) 2020-2022 Michele Martone
This file is part of librsb.
librsb is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
librsb is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public
License along with librsb; see the file COPYING.
If not, see <http://www.gnu.org/licenses/>.
*/
/*!
\ingroup rsb_doc_examples
@file
@author Michele Martone
@brief C++ example based on <rsb.hpp> using timings for common matrix operations on RsbMatrix: RsbMatrix.get_coo(), rsb_coo_sort(), rsb_time().
\include build.cpp
*/
#include <complex>
#include <array>
#include <vector>
#include <iomanip>
#include <iostream>
#include <string>
#include <rsb.hpp>
using namespace ::rsb;
template <typename nt_t>
void bench(const std::string filename) {
RsbLib rsblib;
const rsb_trans_t transA = RSB_TRANSPOSITION_N;
const rsb_int_t nt { rsblib.get_num_threads() };
const RsbMatrix<nt_t> mtx(filename.c_str());
std::vector<nt_t> VA(mtx.nnz());
std::vector<rsb_coo_idx_t> IA(mtx.nnz());
std::vector<rsb_coo_idx_t> JA(mtx.nnz());
rsb_time_t dt;
dt = -rsb_time();
const RsbMatrix<nt_t> mtx2{ mtx };
dt += rsb_time();
std::cout << "copy-" << nt << " took " << dt << std::endl;
mtx.get_coo(transA,VA.data(),IA.data(),JA.data(),RSB_FLAG_NOFLAGS);
dt += rsb_time();
std::cout << "get_coo-" << nt << " took " << dt << std::endl;
dt = -rsb_time();
rsb_coo_sort(VA.data(), JA.data(), IA.data(), VA.size(), mtx.cols(), mtx.rows(), mtx.rsbtype(), RSB_FLAG_NOFLAGS);
dt += rsb_time();
std::cout << "rsb_coo_sort-T-" << nt << " took " << dt << std::endl;
dt = -rsb_time();
rsb_coo_sort(VA.data(), IA.data(), JA.data(), VA.size(), mtx.rows(), mtx.cols(), mtx.rsbtype(), RSB_FLAG_NOFLAGS);
dt += rsb_time();
std::cout << "rsb_coo_sort-N-" << nt << " took " << dt << std::endl;
}
auto main(const int argc, char * argv[]) -> int
{
const std::string filename{ argc > 1 ? argv[1] : "../A.mtx"};
#ifdef RSB_NUMERICAL_TYPE_FLOAT
bench<float>(filename);
#endif
#ifdef RSB_NUMERICAL_TYPE_DOUBLE
bench<double>(filename);
#endif
#ifdef RSB_NUMERICAL_TYPE_FLOAT_COMPLEX
bench<std::complex<float>>(filename);
#endif
#ifdef RSB_NUMERICAL_TYPE_DOUBLE_COMPLEX
bench<std::complex<double>>(filename);
#endif
}
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