mirror of
https://github.com/OPM/opm-simulators.git
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104 lines
2.8 KiB
C++
104 lines
2.8 KiB
C++
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/*
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Copyright 2020 Equinor ASA.
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This file is part of the Open Porous Media project (OPM).
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OPM is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OPM is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OPM. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <opm/models/parallel/mpiutil.hh>
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#include <dune/common/parallel/mpihelper.hh>
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#include <cassert>
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#if HAVE_MPI
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struct MPIError
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{
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MPIError(std::string s, int e) : errorstring(std::move(s)), errorcode(e){}
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std::string errorstring;
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int errorcode;
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};
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void MPI_err_handler(MPI_Comm*, int* err_code, ...)
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{
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std::vector<char> err_string(MPI_MAX_ERROR_STRING);
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int err_length;
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MPI_Error_string(*err_code, err_string.data(), &err_length);
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std::string s(err_string.data(), err_length);
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std::cerr << "An MPI Error ocurred:" << std::endl << s << std::endl;
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throw MPIError(s, *err_code);
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}
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#endif
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bool noStrings(int, int)
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{
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std::string empty;
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auto res = Opm::gatherStrings(empty);
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assert(res.empty());
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return true;
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}
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bool oddRankStrings(int size, int rank)
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{
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std::string what = (rank % 2 == 1) ? "An error on rank " + std::to_string(rank) : std::string();
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auto res = Opm::gatherStrings(what);
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assert(int(res.size()) == size/2);
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for (int i = 0; i < size/2; ++i) {
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assert(res[i] == "An error on rank " + std::to_string(2*i + 1));
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}
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return true;
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}
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bool allRankStrings(int size, int rank)
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{
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std::string what = "An error on rank " + std::to_string(rank);
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auto res = Opm::gatherStrings(what);
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assert(int(res.size()) == size);
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for (int i = 0; i < size; ++i) {
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assert(res[i] == "An error on rank " + std::to_string(i));
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}
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return true;
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}
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int testMain(int size, int rank)
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{
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bool ok = noStrings(size, rank);
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ok = ok && oddRankStrings(size, rank);
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ok = ok && allRankStrings(size, rank);
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if (ok) {
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return EXIT_SUCCESS;
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} else {
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return EXIT_FAILURE;
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}
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}
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int main(int argc, char** argv)
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{
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const auto& mpiHelper = Dune::MPIHelper::instance(argc, argv);
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int mpiSize = mpiHelper.size();
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int mpiRank = mpiHelper.rank();
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#if HAVE_MPI
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// register a throwing error handler to allow for
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// debugging with "catch throw" in gdb
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MPI_Errhandler handler;
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MPI_Comm_create_errhandler(MPI_err_handler, &handler);
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MPI_Comm_set_errhandler(MPI_COMM_WORLD, handler);
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#endif
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return testMain(mpiSize, mpiRank);
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}
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