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Added module for checkpointers

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This commit is contained in:
Guido Cossu
2017-01-05 13:09:32 +00:00
parent 5214846341
commit 1bb8578173
11 changed files with 479 additions and 321 deletions
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120
lib/qcd/hmc/checkpointers/BinaryCheckpointer.h Normal file
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/*************************************************************************************
Grid physics library, www.github.com/paboyle/Grid
Source file: ./lib/qcd/hmc/NerscCheckpointer.h
Copyright (C) 2015
Author: paboyle <paboyle@ph.ed.ac.uk>
This program 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 2 of the License, or
(at your option) any later version.
This program 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 this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
See the full license in the file "LICENSE" in the top level distribution
directory
*************************************************************************************/
/* END LEGAL */
#ifndef BINARY_CHECKPOINTER
#define BINARY_CHECKPOINTER
#include <iostream>
#include <sstream>
#include <string>
namespace Grid {
namespace QCD {
// Simple checkpointer, only binary file
template <class Impl>
class BinaryHmcCheckpointer : public BaseHmcCheckpointer<Impl> {
private:
CheckpointerParameters Params;
public:
INHERIT_FIELD_TYPES(Impl); // Gets the Field type, a Lattice object
// Extract types from the Field
typedef typename Field::vector_object vobj;
typedef typename vobj::scalar_object sobj;
typedef typename getPrecision<sobj>::real_scalar_type sobj_stype;
typedef typename sobj::DoublePrecision sobj_double;
BinaryHmcCheckpointer(CheckpointerParameters& Params_){
initialize(Params_);
}
void initialize(CheckpointerParameters& Params_){ Params = Params_; }
void truncate(std::string file) {
std::ofstream fout(file, std::ios::out);
fout.close();
}
void TrajectoryComplete(int traj, Field &U, GridSerialRNG &sRNG,
GridParallelRNG &pRNG) {
if ((traj % Params.SaveInterval) == 0) {
std::string rng;
{
std::ostringstream os;
os << Params.rngStem << "." << traj;
rng = os.str();
}
std::string config;
{
std::ostringstream os;
os << Params.configStem << "." << traj;
config = os.str();
}
BinaryIO::BinarySimpleUnmunger<sobj_double, sobj> munge;
truncate(rng);
BinaryIO::writeRNGSerial(sRNG, pRNG, rng, 0);
truncate(config);
uint32_t csum = BinaryIO::writeObjectParallel<vobj, sobj_double>(
U, config, munge, 0, Params.format);
std::cout << GridLogMessage << "Written Binary Configuration " << config
<< " checksum " << std::hex << csum << std::dec << std::endl;
}
};
void CheckpointRestore(int traj, Field &U, GridSerialRNG &sRNG,
GridParallelRNG &pRNG) {
std::string rng;
{
std::ostringstream os;
os << Params.rngStem << "." << traj;
rng = os.str();
}
std::string config;
{
std::ostringstream os;
os << Params.configStem << "." << traj;
config = os.str();
}
BinaryIO::BinarySimpleMunger<sobj_double, sobj> munge;
BinaryIO::readRNGSerial(sRNG, pRNG, rng, 0);
uint32_t csum = BinaryIO::readObjectParallel<vobj, sobj_double>(
U, config, munge, 0, Params.format);
std::cout << GridLogMessage << "Read Binary Configuration " << config
<< " checksum " << std::hex << csum << std::dec << std::endl;
};
};
}
}
#endif