inline_mesonspec_w.cc

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/*! \file
 * \brief Inline construction of meson spectrum
 *
 * Meson spectrum calculations
 */
 
#include "handle.h"
#include "meas/inline/hadron/inline_mesonspec_w.h"
#include "meas/inline/abs_inline_measurement_factory.h"
#include "meas/glue/mesplq.h"
#include "util/ft/sftmom.h"
#include "util/info/proginfo.h"
#include "io/param_io.h"
#include "io/qprop_io.h"
#include "meas/inline/make_xml_file.h"
#include "meas/inline/io/named_objmap.h"
 
#include "meas/hadron/spin_insertion_factory.h"
#include "meas/hadron/spin_insertion_aggregate.h"
 
namespace Chroma 
{ 
  namespace InlineMesonSpecEnv 
  { 
    namespace
    {
      AbsInlineMeasurement* createMeasurement(XMLReader& xml_in, 
                                              const std::string& path) 
      {
        return new InlineMesonSpec(InlineMesonSpecParams(xml_in, path));
      }
 
      //! Local registration flag
      bool registered = false;
    }
 
    const std::string name = "MESON_SPECTRUM";
 
    //! Register all the factories
    bool registerAll() 
    {
      bool success = true; 
      if (! registered)
      {
        success &= SpinInsertionEnv::registerAll();
        success &= TheInlineMeasurementFactory::Instance().registerObject(name, createMeasurement);
        registered = true;
      }
      return success;
    }
  }
 
 
 
  //! Reader for parameters
  void read(XMLReader& xml, const std::string& path, 
            InlineMesonSpecParams::Param_t& param)
  {
    XMLReader paramtop(xml, path);
 
    int version;
    read(paramtop, "version", version);
 
    switch (version) 
    {
    case 1:
      break;
 
    default:
      QDPIO::cerr << "Input parameter version " << version << " unsupported." << std::endl;
      QDP_abort(1);
    }
 
    read(paramtop, "mom2_max", param.mom2_max);
    read(paramtop, "avg_equiv_mom", param.avg_equiv_mom);
  }
 
 
  //! Writer for parameters
  void write(XMLWriter& xml, const std::string& path, 
             const InlineMesonSpecParams::Param_t& param)
  {
    push(xml, path);
 
    int version = 1;
    write(xml, "version", version);
 
    write(xml, "mom2_max", param.mom2_max);
    write(xml, "avg_equiv_mom", param.avg_equiv_mom);
 
    pop(xml);
  }
 
 
  //! Propagator input
  void read(XMLReader& xml, const std::string& path, 
            InlineMesonSpecParams::NamedObject_t::Correlators_t::CorrelatorTerms_t& input)
  {
    XMLReader inputtop(xml, path);
 
    read(inputtop, "first_id", input.first_id);
    read(inputtop, "second_id", input.second_id);
    read(inputtop, "factor", input.factor);
 
    input.source_spin_insertion = readXMLGroup(inputtop, "SourceSpinInsertion", "SpinInsertionType");
    input.sink_spin_insertion   = readXMLGroup(inputtop, "SinkSpinInsertion", "SpinInsertionType");
  }
 
  //! Propagator output
  void write(XMLWriter& xml, const std::string& path, 
             const InlineMesonSpecParams::NamedObject_t::Correlators_t::CorrelatorTerms_t& input)
  {
    push(xml, path);
 
    write(xml, "first_id", input.first_id);
    write(xml, "second_id", input.second_id);
    xml << input.source_spin_insertion.xml;
    xml << input.sink_spin_insertion.xml;
    write(xml, "factor", input.factor);
 
    pop(xml);
  }
 
 
  //! Propagator input
  void read(XMLReader& xml, const std::string& path, 
            InlineMesonSpecParams::NamedObject_t::Correlators_t& input)
  {
    XMLReader inputtop(xml, path);
 
    read(inputtop, "source_particle", input.source_particle);
    read(inputtop, "source_wavetype", input.source_wavetype);
    read(inputtop, "sink_particle", input.sink_particle);
    read(inputtop, "sink_wavetype", input.sink_wavetype);
    read(inputtop, "correlator_terms", input.correlator_terms);
  }
 
  //! Propagator output
  void write(XMLWriter& xml, const std::string& path, 
             const InlineMesonSpecParams::NamedObject_t::Correlators_t& input)
  {
    push(xml, path);
 
    write(xml, "source_particle", input.source_particle);
    write(xml, "source_wavetype", input.source_wavetype);
    write(xml, "sink_particle", input.sink_particle);
    write(xml, "sink_wavetype", input.sink_wavetype);
    write(xml, "correlator_terms", input.correlator_terms);
 
    pop(xml);
  }
 
 
  //! Propagator input
  void read(XMLReader& xml, const std::string& path, 
            InlineMesonSpecParams::NamedObject_t& input)
  {
    XMLReader inputtop(xml, path);
 
    read(inputtop, "gauge_id", input.gauge_id);
    read(inputtop, "correlators", input.correlators);
  }
 
  //! Propagator output
  void write(XMLWriter& xml, const std::string& path, 
             const InlineMesonSpecParams::NamedObject_t& input)
  {
    push(xml, path);
 
    write(xml, "gauge_id", input.gauge_id);
    write(xml, "correlators", input.correlators);
 
    pop(xml);
  }
 
 
  // Param stuff
  InlineMesonSpecParams::InlineMesonSpecParams() { frequency = 0; }
 
  InlineMesonSpecParams::InlineMesonSpecParams(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;
 
      // Parameters for source construction
      read(paramtop, "Param", param);
 
      // Read in the output propagator/source configuration info
      read(paramtop, "NamedObject", named_obj);
 
      // Possible alternate XML file pattern
      if (paramtop.count("xml_file") != 0) 
      {
        read(paramtop, "xml_file", xml_file);
      }
    }
    catch(const std::string& e) 
    {
      QDPIO::cerr << __func__ << ": Caught Exception reading XML: " << e << std::endl;
      QDP_abort(1);
    }
  }
 
 
  // Writer
  void
  InlineMesonSpecParams::write(XMLWriter& xml_out, const std::string& path) 
  {
    push(xml_out, path);
    
    Chroma::write(xml_out, "Param", param);
    Chroma::write(xml_out, "NamedObject", named_obj);
    QDP::write(xml_out, "xml_file", xml_file);
 
    pop(xml_out);
  }
 
 
  // Anonymous namespace
  namespace 
  {
    //! Useful structure holding sink props
    struct SinkPropContainer_t
    {
      ForwardProp_t prop_header;
      std::string quark_propagator_id;
      Real Mass;
    
      // Now loop over the various fermion masses
      std::string source_type;
      std::string source_disp_type;
      std::string sink_type;
      std::string sink_disp_type;
    };
 
 
    //! Useful structure holding sink props
    struct AllCorrelatorTerms_t
    {
      SinkPropContainer_t  sink_prop_1;
      SinkPropContainer_t  sink_prop_2;
    };
 
 
    //! Read a sink prop
    void readSinkProp(SinkPropContainer_t& s, const std::string& id)
    {
      try
      {
        // Try a cast to see if it succeeds
        const LatticePropagator& foo = 
          TheNamedObjMap::Instance().getData<LatticePropagator>(id);
 
        // Snarf the data into a copy
        s.quark_propagator_id = id;
        
        // Snarf the prop info. This is will throw if the prop_id is not there
        XMLReader prop_file_xml, prop_record_xml;
        TheNamedObjMap::Instance().get(id).getFileXML(prop_file_xml);
        TheNamedObjMap::Instance().get(id).getRecordXML(prop_record_xml);
   
        // Try to invert this record XML into a ChromaProp struct
        // Also pull out the id of this source
        {
          read(prop_record_xml, "/SinkSmear", s.prop_header);
          
          read(prop_record_xml, "/SinkSmear/PropSource/Source/SourceType", s.source_type);
          read(prop_record_xml, "/SinkSmear/PropSource/Source/Displacement/DisplacementType", 
               s.source_disp_type);
 
          read(prop_record_xml, "/SinkSmear/PropSink/Sink/SinkType", s.sink_type);
          read(prop_record_xml, "/SinkSmear/PropSink/Sink/Displacement/DisplacementType", 
               s.sink_disp_type);
        }
      }
      catch( std::bad_cast ) 
      {
        QDPIO::cerr << InlineMesonSpecEnv::name << ": caught dynamic cast error" 
                    << std::endl;
        QDP_abort(1);
      }
      catch (const std::string& e) 
      {
        QDPIO::cerr << InlineMesonSpecEnv::name << ": error message: " << e 
                    << std::endl;
        QDP_abort(1);
      }
 
 
      // Derived from input prop
      // Hunt around to find the mass
      // NOTE: this may be problematic in the future if actions are used with no
      // clear def. of a Mass
      QDPIO::cout << "Try action and mass" << std::endl;
      s.Mass = getMass(s.prop_header.prop_header.fermact);
    
      QDPIO::cout << "FermAct = " << s.prop_header.prop_header.fermact.id << std::endl;
      QDPIO::cout << "Mass = " << s.Mass << std::endl;
    }
 
 
    //! Read all sinks
    void readAllSinks(multi1d<AllCorrelatorTerms_t>& s, 
                      const multi1d<InlineMesonSpecParams::NamedObject_t::Correlators_t::CorrelatorTerms_t>& correlator_terms)
    {
      s.resize(correlator_terms.size());
 
      for(int i=0; i < correlator_terms.size(); ++i)
      {
        QDPIO::cout << "Attempt to parse forward propagator = " << correlator_terms[i].first_id << std::endl;
        readSinkProp(s[i].sink_prop_1, correlator_terms[i].first_id);
        QDPIO::cout << "Forward propagator successfully parsed" << std::endl;
 
        QDPIO::cout << "Attempt to parse forward propagator = " << correlator_terms[i].second_id << std::endl;
        readSinkProp(s[i].sink_prop_2, correlator_terms[i].second_id);
        QDPIO::cout << "Forward propagator successfully parsed" << std::endl;
      }
    }
 
  } // namespace anonymous
 
 
 
  // Function call
  void 
  InlineMesonSpec::operator()(unsigned long update_no,
                              XMLWriter& xml_out) 
  {
    // If xml file not empty, then use alternate
    if (params.xml_file != "")
    {
      std::string xml_file = makeXMLFileName(params.xml_file, update_no);
 
      push(xml_out, "MesonSpectrum");
      write(xml_out, "update_no", update_no);
      write(xml_out, "xml_file", xml_file);
      pop(xml_out);
 
      XMLFileWriter xml(xml_file);
      func(update_no, xml);
    }
    else
    {
      func(update_no, xml_out);
    }
  }
 
 
 
  // Real work done here
  void 
  InlineMesonSpec::func(unsigned long update_no,
                        XMLWriter& xml_out) 
  {
    START_CODE();
 
    QDPIO::cout << InlineMesonSpecEnv::name << ": meson spectroscopy for Wilson-like fermions" << std::endl;
 
    StopWatch snoop;
    snoop.reset();
    snoop.start();
 
    // Test and grab a reference to the gauge field
    XMLBufferWriter gauge_xml;
    try
    {
      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 << InlineMesonSpecEnv::name << ": caught dynamic cast error" 
                  << std::endl;
      QDP_abort(1);
    }
    catch (const std::string& e) 
    {
      QDPIO::cerr << InlineMesonSpecEnv::name << ": std::map call failed: " << e 
                  << std::endl;
      QDP_abort(1);
    }
    const multi1d<LatticeColorMatrix>& u = 
      TheNamedObjMap::Instance().getData< multi1d<LatticeColorMatrix> >(params.named_obj.gauge_id);
 
    push(xml_out, "MesonSpectrum");
    write(xml_out, "update_no", update_no);
 
    proginfo(xml_out);    // Print out basic program info
 
    QDPIO::cout << "xml_file = " << params.xml_file << std::endl;
 
    // Write out the input
    params.write(xml_out, "Input");
 
    // Write out the config info
    write(xml_out, "Config_info", gauge_xml);
 
    push(xml_out, "Output_version");
    write(xml_out, "out_version", 3);
    pop(xml_out);
 
 
    // First calculate some gauge invariant observables just for info.
    MesPlq(xml_out, "Observables", u);
 
    // Keep an array of all the xml output buffers
    push(xml_out, "Wilson_hadron_measurements");
 
    // Now loop over the various fermion pairs
    for(int lpair=0; lpair < params.named_obj.correlators.size(); ++lpair)
    {
      const InlineMesonSpecParams::NamedObject_t::Correlators_t named_obj = params.named_obj.correlators[lpair];
 
      push(xml_out, "elem");
 
      write(xml_out, "source_particle", named_obj.source_particle);
      write(xml_out, "source_wavetype", named_obj.source_wavetype);
      write(xml_out, "sink_particle", named_obj.sink_particle);
      write(xml_out, "sink_wavetype", named_obj.sink_wavetype);
 
      multi1d<AllCorrelatorTerms_t> all_sinks;
      readAllSinks(all_sinks, named_obj.correlator_terms);
 
      // Derived from input prop
      multi1d<int> t_srce
                  = all_sinks[0].sink_prop_1.prop_header.source_header.getTSrce();
      int j_decay = all_sinks[0].sink_prop_1.prop_header.source_header.j_decay;
      int t0      = all_sinks[0].sink_prop_1.prop_header.source_header.t_source;
 
      // Sanity checks
      for(int loop=0; loop < all_sinks.size(); ++loop)
      {
        if (all_sinks[loop].sink_prop_2.prop_header.source_header.j_decay != j_decay)
        {
          QDPIO::cerr << "Error!! j_decay must be the same for all propagators " << std::endl;
          QDP_abort(1);
        }
        if (all_sinks[loop].sink_prop_2.prop_header.source_header.t_source != 
            all_sinks[loop].sink_prop_1.prop_header.source_header.t_source)
        {
          QDPIO::cerr << "Error!! t_source must be the same for all propagators " << std::endl;
          QDP_abort(1);
        }
      }
        
 
      // Initialize the slow Fourier transform phases
      SftMom phases(params.param.mom2_max, t_srce, params.param.avg_equiv_mom,
                    j_decay);
 
      // Keep a copy of the phases with NO momenta
      SftMom phases_nomom(0, true, j_decay);
 
      // Masses
      write(xml_out, "Mass_1", all_sinks[0].sink_prop_1.Mass);
      write(xml_out, "Mass_2", all_sinks[0].sink_prop_2.Mass);
      write(xml_out, "t0", t0);
 
      // Save prop input
      push(xml_out, "Forward_prop_headers");
      for(int loop=0; loop < all_sinks.size(); ++loop)
      {
        push(xml_out, "elem");
        write(xml_out, "First_forward_prop", all_sinks[loop].sink_prop_1.prop_header);
        write(xml_out, "Second_forward_prop", all_sinks[loop].sink_prop_2.prop_header);
        pop(xml_out);
      }
      pop(xml_out);
 
      // Sanity check - write out the norm2 of the forward prop in the j_decay direction
      // Use this for any possible verification
      push(xml_out, "Forward_prop_correlator");
      for(int loop=0; loop < all_sinks.size(); ++loop)
      {
        const LatticePropagator& sink_prop_1 = 
          TheNamedObjMap::Instance().getData<LatticePropagator>(all_sinks[loop].sink_prop_1.quark_propagator_id);
        const LatticePropagator& sink_prop_2 = 
          TheNamedObjMap::Instance().getData<LatticePropagator>(all_sinks[loop].sink_prop_2.quark_propagator_id);
 
        push(xml_out, "elem");
        write(xml_out, "forward_prop_corr_1", sumMulti(localNorm2(sink_prop_1), phases.getSet()));
        write(xml_out, "forward_prop_corr_2", sumMulti(localNorm2(sink_prop_2), phases.getSet()));
        pop(xml_out);
      }
      pop(xml_out);
 
 
      push(xml_out, "SourceSinkType");
      for(int loop=0; loop < all_sinks.size(); ++loop)
      {
        push(xml_out, "elem");
        QDPIO::cout << "Source_type_1 = " << all_sinks[loop].sink_prop_1.source_type << std::endl;
        QDPIO::cout << "Sink_type_1 = " << all_sinks[loop].sink_prop_1.sink_type << std::endl;
        QDPIO::cout << "Source_type_2 = " << all_sinks[loop].sink_prop_2.source_type << std::endl;
        QDPIO::cout << "Sink_type_2 = " << all_sinks[loop].sink_prop_2.sink_type << std::endl;
 
        write(xml_out, "source_type_1", all_sinks[loop].sink_prop_1.source_type);
        write(xml_out, "source_disp_type_1", all_sinks[loop].sink_prop_1.source_disp_type);
        write(xml_out, "sink_type_1", all_sinks[loop].sink_prop_1.sink_type);
        write(xml_out, "sink_disp_type_1", all_sinks[loop].sink_prop_1.sink_disp_type);
 
        write(xml_out, "source_type_2", all_sinks[loop].sink_prop_2.source_type);
        write(xml_out, "source_disp_type_2", all_sinks[loop].sink_prop_2.source_disp_type);
        write(xml_out, "sink_type_2", all_sinks[loop].sink_prop_2.sink_type);
        write(xml_out, "sink_disp_type_2", all_sinks[loop].sink_prop_2.sink_disp_type);
        pop(xml_out);
      }
      pop(xml_out);
 
 
      // Do the mesons
      push(xml_out, "Mesons");
      {
        // Length of lattice in decay direction
        int length = phases.numSubsets();
 
        // Construct the anti-quark propagator from quark_propagator[1]
        int G5 = Ns*Ns-1;
 
        // Construct the meson correlation function
        LatticeComplex corr_fn = zero;
 
        for(int loop=0; loop < all_sinks.size(); ++loop)
        {
          const LatticePropagator& sink_prop_1 = 
            TheNamedObjMap::Instance().getData<LatticePropagator>(all_sinks[loop].sink_prop_1.quark_propagator_id);
          const LatticePropagator& sink_prop_2 = 
            TheNamedObjMap::Instance().getData<LatticePropagator>(all_sinks[loop].sink_prop_2.quark_propagator_id);
 
          LatticePropagator prop_1, prop_2;
 
          // Factory constructions
          try
          {
            // Create the source spin insertion object
            {
              std::istringstream  xml_s(named_obj.correlator_terms[loop].source_spin_insertion.xml);
              XMLReader  inserttop(xml_s);
//            const std::string insert_path = "/SourceSpinInsertion";
        
              Handle< SpinInsertion<LatticePropagator> > sourceSpinInsertion(
                ThePropSpinInsertionFactory::Instance().createObject(
                  named_obj.correlator_terms[loop].source_spin_insertion.id,
                  inserttop,
                  named_obj.correlator_terms[loop].source_spin_insertion.path));
 
              prop_1 = (*sourceSpinInsertion)(sink_prop_1);
            }
 
            // Create the sink spin insertion object
            {
              std::istringstream  xml_s(named_obj.correlator_terms[loop].sink_spin_insertion.xml);
              XMLReader  inserttop(xml_s);
//            const std::string insert_path = "/SinkSpinInsertion";
        
              Handle< SpinInsertion<LatticePropagator> > sinkSpinInsertion(
                ThePropSpinInsertionFactory::Instance().createObject(
                  named_obj.correlator_terms[loop].sink_spin_insertion.id,
                  inserttop,
                  named_obj.correlator_terms[loop].sink_spin_insertion.path));
 
              LatticePropagator prop_tmp = Gamma(G5) * adj(sink_prop_2) * Gamma(G5);
 
              prop_2 = (*sinkSpinInsertion)(prop_tmp);
            }
          }
          catch(const std::string& e) 
          {
            QDPIO::cerr << InlineMesonSpecEnv::name << ": Caught Exception inserting: " 
                        << e << std::endl;
            QDP_abort(1);
          }
 
 
          LatticeComplex tmp = trace(prop_2 * prop_1);
 
          corr_fn += named_obj.correlator_terms[loop].factor * tmp;
        }
 
        multi2d<DComplex> hsum;
        hsum = phases.sft(corr_fn);
 
        // Loop over sink momenta
        XMLArrayWriter xml_sink_mom(xml_out,phases.numMom());
        push(xml_sink_mom, "momenta");
 
        for (int sink_mom_num=0; sink_mom_num < phases.numMom(); ++sink_mom_num) 
        {
          push(xml_sink_mom);
          write(xml_sink_mom, "sink_mom_num", sink_mom_num);
          write(xml_sink_mom, "sink_mom", phases.numToMom(sink_mom_num));
 
          multi1d<DComplex> mesprop(length);
          for (int t=0; t < length; ++t) 
          {
            int t_eff = (t - t0 + length) % length;
            mesprop[t_eff] = hsum[sink_mom_num][t];
          }
 
          write(xml_sink_mom, "mesprop", mesprop);
          pop(xml_sink_mom);
        
        } // end for(sink_mom_num)
 
        pop(xml_sink_mom);
      }
      pop(xml_out);  // Mesons
 
      pop(xml_out);  // array element
    }
    pop(xml_out);  // Wilson_spectroscopy
    pop(xml_out);  // mesonspec
 
    snoop.stop();
    QDPIO::cout << InlineMesonSpecEnv::name << ": total time = "
                << snoop.getTimeInSeconds() 
                << " secs" << std::endl;
 
    QDPIO::cout << InlineMesonSpecEnv::name << ": ran successfully" << std::endl;
 
    END_CODE();
  } 
 
}