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121 lines
3.7 KiB
C++
121 lines
3.7 KiB
C++
/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./lib/qcd/hmc/NerscCheckpointer.h
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Copyright (C) 2015
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Author: paboyle <paboyle@ph.ed.ac.uk>
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This program 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 2 of the License, or
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(at your option) any later version.
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This program 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 along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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See the full license in the file "LICENSE" in the top level distribution
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directory
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*************************************************************************************/
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/* END LEGAL */
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#ifndef BINARY_CHECKPOINTER
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#define BINARY_CHECKPOINTER
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#include <iostream>
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#include <sstream>
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#include <string>
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namespace Grid {
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namespace QCD {
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// Simple checkpointer, only binary file
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template <class Impl>
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class BinaryHmcCheckpointer : public HmcObservable<typename Impl::Field> {
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private:
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std::string configStem;
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std::string rngStem;
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int SaveInterval;
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std::string format;
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public:
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INHERIT_FIELD_TYPES(Impl); // Gets the Field type, a Lattice object
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// Extract types from the Field
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typedef typename Field::vector_object vobj;
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typedef typename vobj::scalar_object sobj;
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typedef typename getPrecision<sobj>::real_scalar_type sobj_stype;
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typedef typename sobj::DoublePrecision sobj_double;
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BinaryHmcCheckpointer(std::string cf, std::string rn, int savemodulo,
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const std::string &f)
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: configStem(cf), rngStem(rn), SaveInterval(savemodulo), format(f){};
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void truncate(std::string file) {
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std::ofstream fout(file, std::ios::out);
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fout.close();
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}
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void TrajectoryComplete(int traj, Field &U, GridSerialRNG &sRNG,
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GridParallelRNG &pRNG) {
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if ((traj % SaveInterval) == 0) {
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std::string rng;
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{
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std::ostringstream os;
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os << rngStem << "." << traj;
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rng = os.str();
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}
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std::string config;
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{
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std::ostringstream os;
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os << configStem << "." << traj;
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config = os.str();
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}
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BinaryIO::BinarySimpleUnmunger<sobj_double, sobj> munge;
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truncate(rng);
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BinaryIO::writeRNGSerial(sRNG, pRNG, rng, 0);
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truncate(config);
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uint32_t csum = BinaryIO::writeObjectParallel<vobj, sobj_double>(
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U, config, munge, 0, format);
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std::cout << GridLogMessage << "Written Binary Configuration " << config
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<< " checksum " << std::hex << csum << std::dec << std::endl;
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}
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};
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void CheckpointRestore(int traj, Field &U, GridSerialRNG &sRNG,
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GridParallelRNG &pRNG) {
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std::string rng;
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{
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std::ostringstream os;
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os << rngStem << "." << traj;
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rng = os.str();
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}
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std::string config;
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{
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std::ostringstream os;
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os << configStem << "." << traj;
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config = os.str();
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}
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BinaryIO::BinarySimpleMunger<sobj_double, sobj> munge;
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BinaryIO::readRNGSerial(sRNG, pRNG, rng, 0);
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uint32_t csum = BinaryIO::readObjectParallel<vobj, sobj_double>(
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U, config, munge, 0, format);
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std::cout << GridLogMessage << "Read Binary Configuration " << config
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<< " checksum " << std::hex << csum << std::dec << std::endl;
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};
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};
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}
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}
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#endif
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