inline_apply_fermstate_w.cc

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/*! \file
 *  \brief Inline ferm state application
 */
 
#include "meas/inline/hadron/inline_apply_fermstate_w.h"
#include "meas/inline/abs_inline_measurement_factory.h"
#include "meas/glue/mesplq.h"
#include "meas/inline/io/named_objmap.h"
 
#include "meas/inline/io/default_gauge_field.h"
 
#include "actions/ferm/fermstates/ferm_createstate_factory_w.h"
#include "actions/ferm/fermstates/ferm_createstate_aggregate_w.h"
 
namespace Chroma 
{ 
 
  //! FermState input
  void read(XMLReader& xml, const std::string& path, InlineFermStateEnv::Params::Param_t& param)
  {
    XMLReader paramtop(xml, path);
 
    int version;
    read(paramtop, "version", version);
 
    switch (version) 
    {
    case 1:
      param.cfs = readXMLGroup(paramtop, "FermState", "Name");
      break;
 
    default:
      QDPIO::cerr << "InlineFermStateEnv::Params::Param_t: " << version 
                  << " unsupported." << std::endl;
      QDP_abort(1);
    }
  }
 
  //! FermState output
  void write(XMLWriter& xml, const std::string& path, const InlineFermStateEnv::Params::Param_t& param)
  {
    push(xml, path);
 
    int version = 2;
    write(xml, "version", version);
    xml << param.cfs.xml;
 
    pop(xml);
  }
 
 
  //! FermState input
  void read(XMLReader& xml, const std::string& path, InlineFermStateEnv::Params::NamedObject_t& input)
  {
    XMLReader inputtop(xml, path);
 
    read(inputtop, "gauge_id", input.gauge_id);
    read(inputtop, "output_id", input.output_id);
  }
 
  //! FermState output
  void write(XMLWriter& xml, const std::string& path, const InlineFermStateEnv::Params::NamedObject_t& input)
  {
    push(xml, path);
 
    write(xml, "gauge_id", input.gauge_id);
    write(xml, "output_id", input.output_id);
 
    pop(xml);
  }
 
 
  namespace InlineFermStateEnv 
  { 
    namespace
    {
      AbsInlineMeasurement* createMeasurement(XMLReader& xml_in, 
                                              const std::string& path) 
      {
        return new InlineMeas(Params(xml_in, path));
      }
 
      //! Local registration flag
      bool registered = false;
    }
 
    const std::string name = "APPLY_FERM_STATE";
 
    //! Register all the factories
    bool registerAll() 
    {
      bool success = true; 
      if (! registered)
      {
        success &= TheInlineMeasurementFactory::Instance().registerObject(name, createMeasurement);
        registered = true;
      }
      return success;
    }
 
 
 
    // Params
    Params::Params() 
    { 
      frequency = 0; 
    }
 
    Params::Params(XMLReader& xml_in, const std::string& path) 
    {
      try 
      {
        XMLReader paramtop(xml_in, path);
 
        if (paramtop.count("Frequency") == 1)
          read(paramtop, "Frequency", frequency);
        else
          frequency = 1;
 
        // Params
        read(paramtop, "Param", param);
 
        // Ids
        read(paramtop, "NamedObject", named_obj);
      }
      catch(const std::string& e) 
      {
        QDPIO::cerr << "Caught Exception reading XML: " << e << std::endl;
        QDP_abort(1);
      }
    }
 
 
    void
    Params::writeXML(XMLWriter& xml_out, const std::string& path) 
    {
      push(xml_out, path);
    
      write(xml_out, "Param", param);
      write(xml_out, "NamedObject", named_obj);
 
      pop(xml_out);
    }
 
 
 
    void 
    InlineMeas::operator()(unsigned long update_no,
                           XMLWriter& xml_out) 
    {
      START_CODE();
    
      StopWatch snoop;
      snoop.reset();
      snoop.start();
 
      push(xml_out, "apply_ferm_state");
      write(xml_out, "update_no", update_no);
    
      // Write out the input
      params.writeXML(xml_out, "Input");
 
      push(xml_out, "Output_version");
      write(xml_out, "out_version", 1);
      pop(xml_out);
 
      // Grab the gauge field
      multi1d<LatticeColorMatrix> u;
      XMLBufferWriter gauge_xml;
 
      try
      {
        u = TheNamedObjMap::Instance().getData< multi1d<LatticeColorMatrix> >(params.named_obj.gauge_id);
        TheNamedObjMap::Instance().get(params.named_obj.gauge_id).getRecordXML(gauge_xml);
      }
      catch( std::bad_cast ) 
      {
        QDPIO::cerr << InlineFermStateEnv::name << ": caught dynamic cast error" 
                    << std::endl;
        QDP_abort(1);
      }
      catch (const std::string& e) 
      {
        QDPIO::cerr << InlineFermStateEnv::name << ": std::map call failed: " << e 
                    << std::endl;
        QDP_abort(1);
      }
 
      // Write out the config header
      write(xml_out, "Config_info", gauge_xml);
 
      // Calculate some gauge invariant observables
      MesPlq(xml_out, "Observables", u);
 
      // Apply the fermstate
      try
      {
        // Set the construct state and modify the fields
        {
          std::istringstream  xml_s(params.param.cfs.xml);
          XMLReader  fermtop(xml_s);
 
          Handle<CreateFermState< LatticeFermion, multi1d<LatticeColorMatrix>, multi1d<LatticeColorMatrix> > > 
            cfs(TheCreateFermStateFactory::Instance().createObject(params.param.cfs.id,
                                                                   fermtop,
                                                                   params.param.cfs.path));
 
          Handle<FermState< LatticeFermion, multi1d<LatticeColorMatrix>, multi1d<LatticeColorMatrix> > > 
            state((*cfs)(u));
 
          // Pull the u fields back out from the state since they might have been
          // munged with fermBC's
          u = state->getLinks();
        }
      }
      catch( std::bad_cast ) 
      {
        QDPIO::cerr << InlineFermStateEnv::name << ": caught dynamic cast error" 
                    << std::endl;
        QDP_abort(1);
      }
      catch (const std::string& e) 
      {
        QDPIO::cerr << InlineFermStateEnv::name << ": std::map call failed: " << e 
                    << std::endl;
        QDP_abort(1);
      }
 
      // Again calculate some ferm invariant_observables
      MesPlq(xml_out, "Link_observables", u);
 
      // Now store the configuration to a memory object
      {
        XMLBufferWriter file_xml, record_xml;
        push(file_xml, "gauge");
        write(file_xml, "id", int(0));
        pop(file_xml);
        record_xml << gauge_xml;
 
        // Store the gauge field
        TheNamedObjMap::Instance().create< multi1d<LatticeColorMatrix> >(params.named_obj.output_id);
        TheNamedObjMap::Instance().getData< multi1d<LatticeColorMatrix> >(params.named_obj.output_id) = u;
        TheNamedObjMap::Instance().get(params.named_obj.output_id).setFileXML(file_xml);
        TheNamedObjMap::Instance().get(params.named_obj.output_id).setRecordXML(record_xml);
      }
 
      pop(xml_out);  // apply_ferm_state
 
      snoop.stop();
      QDPIO::cout << InlineFermStateEnv::name << ": total time = "
                  << snoop.getTimeInSeconds() 
                  << " secs" << std::endl;
 
      QDPIO::cout << InlineFermStateEnv::name << ": ran successfully" << std::endl;
 
      END_CODE();
    } 
 
  } // namespace InlineFermStateEnv
 
}  // namespace Chroma