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/*
Copyright 2013, 2014, 2015 SINTEF ICT, Applied Mathematics.
Copyright 2014 Dr. Blatt - HPC-Simulation-Software & Services
Copyright 2015, 2017 IRIS AS
Copyright 2021 OPM-OP AS
This file is part of the Open Porous Media project (OPM).
OPM is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OPM 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with OPM. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <opm/simulators/flow/Main.hpp>
#include <opm/simulators/flow/CpGridVanguard.hpp>
std::vector<int> loadBalanceInZOnly(const Dune::CpGrid& grid)
{
auto cartMapper = Dune::CartesianIndexMapper<Dune::CpGrid>(grid);
auto dims = cartMapper.cartesianDimensions();
std::vector<int> parts(grid.leafGridView().size(0));
auto numCellsPerProc = dims[2]/grid.comm().size();
if (grid.size(0)>0 && numCellsPerProc == 0)
{
OPM_THROW(std::logic_error,
"cartesian grid must have more cells in z direction than number of processes.");
}
using ElementMapper =
Dune::MultipleCodimMultipleGeomTypeMapper<typename Dune::CpGrid::LeafGridView>;
const auto& gridView = grid.leafGridView();
const auto& idSet = grid.localIdSet();
ElementMapper elemMapper(gridView, Dune::mcmgElementLayout());
for( const auto &element : elements(gridView) )
{
const auto& id = idSet.id(element);
unsigned elemIdx = elemMapper.index(element);
const auto& cartIndex = cartMapper.cartesianIndex(elemIdx);
std::array<int,3> cartCoord;
cartMapper.cartesianCoordinate(cartIndex, cartCoord);
using std::min;
auto rank = min(grid.comm().size() -1, cartCoord[2] / numCellsPerProc);
parts[id] = rank;
}
return parts;
}
int main(int argc, char** argv)
{
auto mainObject = std::make_unique<Opm::Main>(argc, argv);
Opm::CpGridVanguard<Opm::Properties::TTag::FlowProblem>::setExternalLoadBalancer(loadBalanceInZOnly);
auto ret = mainObject->runDynamic();
// Destruct mainObject as the destructor calls MPI_Finalize!
mainObject.reset();
return ret;
}
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