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324 lines
10 KiB
C++
324 lines
10 KiB
C++
/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: extras/Hadrons/EigenPack.hpp
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Copyright (C) 2015-2018
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Author: Antonin Portelli <antonin.portelli@me.com>
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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 directory
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*************************************************************************************/
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/* END LEGAL */
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#ifndef Hadrons_EigenPack_hpp_
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#define Hadrons_EigenPack_hpp_
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#include <Grid/Hadrons/Global.hpp>
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#include <Grid/algorithms/iterative/Deflation.h>
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#include <Grid/algorithms/iterative/LocalCoherenceLanczos.h>
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BEGIN_HADRONS_NAMESPACE
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// Lanczos type
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#ifndef HADRONS_DEFAULT_LANCZOS_NBASIS
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#define HADRONS_DEFAULT_LANCZOS_NBASIS 60
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#endif
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template <typename F>
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class EigenPack
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{
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public:
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typedef F Field;
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struct PackRecord
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{
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std::string operatorXml, solverXml;
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};
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struct VecRecord: Serializable
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{
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GRID_SERIALIZABLE_CLASS_MEMBERS(VecRecord,
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unsigned int, index,
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double, eval);
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VecRecord(void): index(0), eval(0.) {}
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};
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public:
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std::vector<RealD> eval;
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std::vector<F> evec;
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PackRecord record;
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public:
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EigenPack(void) = default;
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virtual ~EigenPack(void) = default;
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EigenPack(const size_t size, GridBase *grid)
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{
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resize(size, grid);
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}
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void resize(const size_t size, GridBase *grid)
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{
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eval.resize(size);
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evec.resize(size, grid);
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}
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virtual void read(const std::string fileStem, const bool multiFile, const int traj = -1)
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{
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if (multiFile)
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{
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for(int k = 0; k < evec.size(); ++k)
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{
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basicReadSingle(evec[k], eval[k], evecFilename(fileStem, k, traj), k);
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}
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}
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else
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{
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basicRead(evec, eval, evecFilename(fileStem, -1, traj), evec.size());
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}
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}
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virtual void write(const std::string fileStem, const bool multiFile, const int traj = -1)
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{
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if (multiFile)
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{
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for(int k = 0; k < evec.size(); ++k)
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{
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basicWriteSingle(evecFilename(fileStem, k, traj), evec[k], eval[k], k);
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}
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}
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else
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{
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basicWrite(evecFilename(fileStem, -1, traj), evec, eval, evec.size());
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}
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}
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protected:
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std::string evecFilename(const std::string stem, const int vec, const int traj)
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{
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std::string t = (traj < 0) ? "" : ("." + std::to_string(traj));
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if (vec == -1)
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{
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return stem + t + ".bin";
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}
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else
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{
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return stem + t + "/v" + std::to_string(vec) + ".bin";
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}
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}
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template <typename T>
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void basicRead(std::vector<T> &evec, std::vector<double> &eval,
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const std::string filename, const unsigned int size)
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{
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ScidacReader binReader;
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binReader.open(filename);
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binReader.skipPastObjectRecord(SCIDAC_FILE_XML);
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for(int k = 0; k < size; ++k)
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{
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VecRecord vecRecord;
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LOG(Message) << "Reading eigenvector " << k << std::endl;
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binReader.readScidacFieldRecord(evec[k], vecRecord);
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if (vecRecord.index != k)
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{
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HADRONS_ERROR(Io, "Eigenvector " + std::to_string(k) + " has a"
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+ " wrong index (expected " + std::to_string(vecRecord.index)
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+ ") in file '" + filename + "'");
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}
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eval[k] = vecRecord.eval;
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}
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binReader.close();
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}
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template <typename T>
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void basicReadSingle(T &evec, double &eval, const std::string filename,
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const unsigned int index)
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{
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ScidacReader binReader;
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VecRecord vecRecord;
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binReader.open(filename);
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binReader.skipPastObjectRecord(SCIDAC_FILE_XML);
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LOG(Message) << "Reading eigenvector " << index << std::endl;
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binReader.readScidacFieldRecord(evec, vecRecord);
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if (vecRecord.index != index)
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{
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HADRONS_ERROR(Io, "Eigenvector " + std::to_string(index) + " has a"
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+ " wrong index (expected " + std::to_string(vecRecord.index)
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+ ") in file '" + filename + "'");
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}
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eval = vecRecord.eval;
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binReader.close();
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}
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template <typename T>
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void basicWrite(const std::string filename, std::vector<T> &evec,
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const std::vector<double> &eval, const unsigned int size)
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{
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ScidacWriter binWriter(evec[0]._grid->IsBoss());
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XmlWriter xmlWriter("", "eigenPackPar");
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makeFileDir(filename, evec[0]._grid);
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xmlWriter.pushXmlString(record.operatorXml);
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xmlWriter.pushXmlString(record.solverXml);
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binWriter.open(filename);
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binWriter.writeLimeObject(1, 1, xmlWriter, "parameters", SCIDAC_FILE_XML);
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for(int k = 0; k < size; ++k)
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{
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VecRecord vecRecord;
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vecRecord.index = k;
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vecRecord.eval = eval[k];
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LOG(Message) << "Writing eigenvector " << k << std::endl;
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binWriter.writeScidacFieldRecord(evec[k], vecRecord, DEFAULT_ASCII_PREC);
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}
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binWriter.close();
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}
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template <typename T>
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void basicWriteSingle(const std::string filename, T &evec,
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const double eval, const unsigned int index)
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{
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ScidacWriter binWriter(evec._grid->IsBoss());
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XmlWriter xmlWriter("", "eigenPackPar");
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VecRecord vecRecord;
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makeFileDir(filename, evec._grid);
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xmlWriter.pushXmlString(record.operatorXml);
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xmlWriter.pushXmlString(record.solverXml);
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binWriter.open(filename);
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binWriter.writeLimeObject(1, 1, xmlWriter, "parameters", SCIDAC_FILE_XML);
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vecRecord.index = index;
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vecRecord.eval = eval;
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LOG(Message) << "Writing eigenvector " << index << std::endl;
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binWriter.writeScidacFieldRecord(evec, vecRecord, DEFAULT_ASCII_PREC);
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binWriter.close();
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}
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};
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template <typename FineF, typename CoarseF>
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class CoarseEigenPack: public EigenPack<FineF>
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{
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public:
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typedef CoarseF CoarseField;
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public:
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std::vector<RealD> evalCoarse;
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std::vector<CoarseF> evecCoarse;
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public:
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CoarseEigenPack(void) = default;
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virtual ~CoarseEigenPack(void) = default;
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CoarseEigenPack(const size_t sizeFine, const size_t sizeCoarse,
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GridBase *gridFine, GridBase *gridCoarse)
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{
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resize(sizeFine, sizeCoarse, gridFine, gridCoarse);
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}
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void resize(const size_t sizeFine, const size_t sizeCoarse,
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GridBase *gridFine, GridBase *gridCoarse)
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{
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EigenPack<FineF>::resize(sizeFine, gridFine);
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evalCoarse.resize(sizeCoarse);
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evecCoarse.resize(sizeCoarse, gridCoarse);
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}
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void readFine(const std::string fileStem, const bool multiFile, const int traj = -1)
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{
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if (multiFile)
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{
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for(int k = 0; k < this->evec.size(); ++k)
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{
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this->basicReadSingle(this->evec[k], this->eval[k], this->evecFilename(fileStem + "_fine", k, traj), k);
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}
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}
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else
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{
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this->basicRead(this->evec, this->eval, this->evecFilename(fileStem + "_fine", -1, traj), this->evec.size());
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}
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}
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void readCoarse(const std::string fileStem, const bool multiFile, const int traj = -1)
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{
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if (multiFile)
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{
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for(int k = 0; k < evecCoarse.size(); ++k)
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{
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this->basicReadSingle(evecCoarse[k], evalCoarse[k], this->evecFilename(fileStem + "_coarse", k, traj), k);
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}
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}
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else
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{
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this->basicRead(evecCoarse, evalCoarse, this->evecFilename(fileStem + "_coarse", -1, traj), evecCoarse.size());
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}
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}
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virtual void read(const std::string fileStem, const bool multiFile, const int traj = -1)
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{
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readFine(fileStem, multiFile, traj);
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readCoarse(fileStem, multiFile, traj);
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}
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void writeFine(const std::string fileStem, const bool multiFile, const int traj = -1)
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{
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if (multiFile)
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{
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for(int k = 0; k < this->evec.size(); ++k)
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{
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this->basicWriteSingle(this->evecFilename(fileStem + "_fine", k, traj), this->evec[k], this->eval[k], k);
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}
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}
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else
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{
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this->basicWrite(this->evecFilename(fileStem + "_fine", -1, traj), this->evec, this->eval, this->evec.size());
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}
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}
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void writeCoarse(const std::string fileStem, const bool multiFile, const int traj = -1)
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{
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if (multiFile)
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{
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for(int k = 0; k < evecCoarse.size(); ++k)
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{
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this->basicWriteSingle(this->evecFilename(fileStem + "_coarse", k, traj), evecCoarse[k], evalCoarse[k], k);
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}
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}
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else
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{
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this->basicWrite(this->evecFilename(fileStem + "_coarse", -1, traj), evecCoarse, evalCoarse, evecCoarse.size());
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}
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}
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virtual void write(const std::string fileStem, const bool multiFile, const int traj = -1)
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{
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writeFine(fileStem, multiFile, traj);
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writeCoarse(fileStem, multiFile, traj);
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}
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};
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template <typename FImpl>
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using FermionEigenPack = EigenPack<typename FImpl::FermionField>;
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template <typename FImpl, int nBasis>
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using CoarseFermionEigenPack = CoarseEigenPack<
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typename FImpl::FermionField,
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typename LocalCoherenceLanczos<typename FImpl::SiteSpinor,
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typename FImpl::SiteComplex,
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nBasis>::CoarseField>;
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END_HADRONS_NAMESPACE
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#endif // Hadrons_EigenPack_hpp_
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