opm-simulators/opm/simulators/linalg/setupPropertyTree.cpp
2019-06-05 15:57:45 +02:00

52 lines
1.9 KiB
C++

/*
Copyright 2019 SINTEF Digital, Mathematics and Cybernetics.
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/linalg/setupPropertyTree.hpp>
#include <boost/property_tree/json_parser.hpp>
namespace Opm
{
/// Set up a property tree intended for FlexibleSolver by either reading
/// the tree from a JSON file or creating a tree giving the default solver
/// and preconditioner. If the latter, the parameters --linear-solver-reduction,
/// --linear-solver-maxiter and --linear-solver-verbosity are used, but if reading
/// from file the data in the JSON file will override any other options.
boost::property_tree::ptree
setupPropertyTree(const FlowLinearSolverParameters& p)
{
boost::property_tree::ptree prm;
if (p.linear_solver_configuration_json_file_ != "none") {
boost::property_tree::read_json(p.linear_solver_configuration_json_file_, prm);
} else {
prm.put("tol", p.linear_solver_reduction_);
prm.put("maxiter", p.linear_solver_maxiter_);
prm.put("verbosity", p.linear_solver_verbosity_);
prm.put("solver", "bicgstab");
prm.put("preconditioner.type", "ParOverILU0");
prm.put("preconditioner.relaxation", 1.0);
}
return prm;
}
} // namespace Opm