ScidacCheckpointer.h

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/*************************************************************************************
 
Grid physics library, www.github.com/paboyle/Grid
 
Source file: ./lib/qcd/hmc/ScidacCheckpointer.h
 
Copyright (C) 2018
 
Author: Guido Cossu <guido.cossu@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 */
#pragma once
 
#ifdef HAVE_LIME
 
#include <iostream>
#include <sstream>
#include <string>
 
NAMESPACE_BEGIN(Grid);
// For generic fields
template <class Implementation, class Metadata>
class ScidacHmcCheckpointer : public BaseHmcCheckpointer<Implementation> {
 private:
  CheckpointerParameters Params;
  Metadata MData;
 
  typedef typename Implementation::Field Field;
 
 public:
  //INHERIT_GIMPL_TYPES(Implementation);
 
  ScidacHmcCheckpointer(const CheckpointerParameters &Params_) { initialize(Params_); }
  ScidacHmcCheckpointer(const CheckpointerParameters &Params_, const Metadata& M_):MData(M_) { initialize(Params_); }
 
  void initialize(const CheckpointerParameters &Params_) {
    Params = Params_;
 
    // check here that the format is valid
    int ieee32big = (Params.format == std::string("IEEE32BIG"));
    int ieee32    = (Params.format == std::string("IEEE32"));
    int ieee64big = (Params.format == std::string("IEEE64BIG"));
    int ieee64    = (Params.format == std::string("IEEE64"));
 
    if (!(ieee64big || ieee32 || ieee32big || ieee64)) {
      std::cout << GridLogError << "Unrecognized file format " << Params.format
                << std::endl;
      std::cout << GridLogError
                << "Allowed: IEEE32BIG | IEEE32 | IEEE64BIG | IEEE64"
                << std::endl;
 
      exit(1);
    }
  }
 
  void TrajectoryComplete(int traj, 
              ConfigurationBase<Field> &SmartConfig,
              GridSerialRNG &sRNG,
                          GridParallelRNG &pRNG) {
    if ((traj % Params.saveInterval) == 0) {
      std::string config, rng,smr;
      this->build_filenames(traj, Params, config, smr, rng);
      GridBase *grid = SmartConfig.get_U(false).Grid();
      uint32_t nersc_csum,scidac_csuma,scidac_csumb;
      BinaryIO::writeRNG(sRNG, pRNG, rng, 0,nersc_csum,scidac_csuma,scidac_csumb);
      std::cout << GridLogMessage << "Written Binary RNG " << rng
                << " checksum " << std::hex 
        << nersc_csum   <<"/"
        << scidac_csuma   <<"/"
        << scidac_csumb 
        << std::dec << std::endl;
 
 
      {
    ScidacWriter _ScidacWriter(grid->IsBoss());
    _ScidacWriter.open(config);
    _ScidacWriter.writeScidacFieldRecord(SmartConfig.get_U(false), MData);
    _ScidacWriter.close();
      }
      
      if ( Params.saveSmeared ) {
    ScidacWriter _ScidacWriter(grid->IsBoss());
    _ScidacWriter.open(smr);
    _ScidacWriter.writeScidacFieldRecord(SmartConfig.get_U(true), MData);
    _ScidacWriter.close();
      }
      std::cout << GridLogMessage << "Written Scidac Configuration on " << config << std::endl;
    }
  };
 
  void CheckpointRestore(int traj, Field &U, GridSerialRNG &sRNG,
                         GridParallelRNG &pRNG) {
    std::string config, rng, smr;
    this->build_filenames(traj, Params, config, smr, rng);
    this->check_filename(rng);
    this->check_filename(config);
 
 
    uint32_t nersc_csum,scidac_csuma,scidac_csumb;
    BinaryIO::readRNG(sRNG, pRNG, rng, 0,nersc_csum,scidac_csuma,scidac_csumb);
 
    Metadata md_content;
    ScidacReader _ScidacReader;
    _ScidacReader.open(config);
    _ScidacReader.readScidacFieldRecord(U,md_content);  // format from the header
    _ScidacReader.close();
 
    std::cout << GridLogMessage << "Read Scidac Configuration from " << config
              << " checksum " << std::hex 
          << nersc_csum<<"/"
          << scidac_csuma<<"/"
          << scidac_csumb
          << std::dec << std::endl;
  };
};
NAMESPACE_END(Grid);
 
 
#endif  // HAVE_LIME