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Let amgcl use runtime parameters via JSON file

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This commit is contained in:
Tong Dong Qiu 2021-06-08 14:05:07 +02:00
parent a23d881817
commit 3c1bfeb72f
2 changed files with 21 additions and 16 deletions
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21
opm/simulators/linalg/bda/amgclSolverBackend.cpp
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@ -27,6 +27,9 @@
#include <opm/simulators/linalg/bda/BdaResult.hpp>
#include <opm/simulators/linalg/bda/amgclSolverBackend.hpp>
#include <boost/property_tree/json_parser.hpp>
namespace bda
{
@ -69,11 +72,12 @@ void amgclSolverBackend<block_size>::initialize(int N_, int nnz_, int dim, doubl
cusparseCreate(&bprm.cusparse_handle);
#endif
// set amgcl parameters
prm.precond.damping = 0.9;
prm.solver.maxiter = maxit;
prm.solver.tol = tolerance;
prm.solver.verbose = (verbosity >= 2);
// read amgcl parameters via json file
std::ifstream file("amgcl_options.json");
boost::property_tree::read_json(file, prm);
// print json parameters
boost::property_tree::write_json(std::cout, prm);
initialized = true;
} // end initialize()
@ -143,7 +147,12 @@ void amgclSolverBackend<block_size>::solve_system(double *b, WellContributions &
try {
// create matrix object
#if AMGCL_CUDA
auto A = std::tie(N, A_rows, A_cols, A_vals);
#else
auto Atmp = std::tie(N, A_rows, A_cols, A_vals);
auto A = amgcl::adapter::block_matrix<dmat_type>(Atmp);
#endif
// create solver and construct preconditioner
// don't reuse this unless the preconditioner can be reused
@ -174,7 +183,7 @@ void amgclSolverBackend<block_size>::solve_system(double *b, WellContributions &
auto X = amgcl::make_iterator_range(x_ptr, x_ptr + N / block_size);
// actually solve
std::tie(iters, error) = solve(A, B, X);
std::tie(iters, error) = solve(B, X);
#endif
} catch (const std::exception& ex) {

16
opm/simulators/linalg/bda/amgclSolverBackend.hpp
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@ -26,6 +26,8 @@
#include <opm/simulators/linalg/bda/BdaSolver.hpp>
#include <opm/simulators/linalg/bda/WellContributions.hpp>
#include <boost/property_tree/ptree.hpp>
#include <amgcl/amg.hpp>
#include <amgcl/backend/builtin.hpp>
#include <amgcl/backend/cuda.hpp>
@ -36,6 +38,8 @@
#include <amgcl/relaxation/ilu0.hpp>
#include <amgcl/solver/bicgstab.hpp>
#include <amgcl/preconditioner/runtime.hpp>
#include <amgcl/value_type/static_matrix.hpp>
#define AMGCL_CUDA 0
@ -72,15 +76,7 @@ class amgclSolverBackend : public BdaSolver<block_size>
typedef amgcl::backend::builtin<dmat_type> Backend;
#endif
// choose linear solver components
typedef amgcl::relaxation::as_preconditioner<Backend, amgcl::relaxation::ilu0> Precond;
typedef amgcl::solver::bicgstab<Backend> IterSolver;
#if AMGCL_CUDA
typedef amgcl::make_solver<Precond, IterSolver> Solver;
#else
typedef amgcl::make_block_solver<Precond, IterSolver> Solver;
#endif
typedef amgcl::make_solver<amgcl::runtime::preconditioner<Backend>, amgcl::runtime::solver::wrapper<Backend> > Solver;
private:
// store matrix in CSR format
@ -89,7 +85,7 @@ private:
std::vector<double> x;
std::once_flag print_info;
typename Solver::params prm;
boost::property_tree::ptree prm;
typename Backend::params bprm; // amgcl backend parameters, only used for cusparseHandle
/// Initialize GPU and allocate memory