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81 lines
2.5 KiB
C++
81 lines
2.5 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 NERSC_CHECKPOINTER
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#define NERSC_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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// Only for Gauge fields
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template <class Gimpl>
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class NerscHmcCheckpointer : public BaseHmcCheckpointer<Gimpl> {
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private:
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CheckpointerParameters Params;
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public:
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INHERIT_GIMPL_TYPES(Gimpl); // only for gauge configurations
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NerscHmcCheckpointer(const CheckpointerParameters &Params_) { initialize(Params_); }
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void initialize(const CheckpointerParameters &Params_) {
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Params = Params_;
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Params.format = "IEEE64BIG"; // fixed, overwrite any other choice
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}
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void TrajectoryComplete(int traj, GaugeField &U, GridSerialRNG &sRNG,
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GridParallelRNG &pRNG) {
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if ((traj % Params.saveInterval) == 0) {
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std::string config, rng;
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this->build_filenames(traj, Params, config, rng);
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int precision32 = 1;
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int tworow = 0;
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NerscIO::writeRNGState(sRNG, pRNG, rng);
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NerscIO::writeConfiguration(U, config, tworow, precision32);
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}
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};
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void CheckpointRestore(int traj, GaugeField &U, GridSerialRNG &sRNG,
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GridParallelRNG &pRNG) {
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std::string config, rng;
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this->build_filenames(traj, Params, config, rng);
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FieldMetaData header;
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NerscIO::readRNGState(sRNG, pRNG, header, rng);
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NerscIO::readConfiguration(U, header, config);
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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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