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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> of invoking the autotuner on an RsbMatrix matrix with RsbMatrix.tune_spmm() and rendering it with RsbMatrix.rndr().
\include render.cpp
*/
#include <iostream>
#include <rsb.hpp>
#include <vector>
#include <string>
#include <sstream>
#if defined(_OPENMP)
#include <omp.h>
#endif
using namespace ::rsb;
template <typename NT=RSB_DEFAULT_TYPE>
void render_test(std::string filename="../A.mtx")
{
RsbLib rsblib;
RsbMatrix<NT> mtx(filename.c_str());
#if defined(_OPENMP)
auto nt = omp_get_max_threads();
#else
auto nt = 1;
#endif
for ( ; nt > 0 ; nt /= 2 )
{
const rsb_trans_t transA { RSB_TRANSPOSITION_N };
rsblib.set_num_threads(nt);
rsb_real_t sf{};
rsb_int_t maxr = 0;
rsb_time_t maxt = 0;
const rsb_coo_idx_t nrhs {1};
const rsb_flags_t order = RSB_FLAG_WANT_COLUMN_MAJOR_ORDER;
std::ostringstream oss;
oss << filename << "-" << nt << "th.eps";
const auto psfilename = oss.str();
mtx.tune_spmm(&sf,nullptr,maxr,maxt,transA, nullptr, nrhs, order, nullptr, {}, nullptr, nullptr, {});
/*! [snip__RsbMatrix_rndr] */
mtx.rndr(psfilename.c_str());
/*! [snip__RsbMatrix_rndr] */
}
}
auto main(const int argc, char * argv[]) -> int
{
if(argc > 1)
render_test(argv[1]);
else
render_test();
}
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