inline_diquark_w.cc

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/*! \file
 * \brief Inline construction of the diquark within a QQQ
 *
 * Diquarks for QQQ calcs
 */
 
#include "meas/inline/hadron/inline_diquark_w.h"
#include "meas/inline/abs_inline_measurement_factory.h"
#include "meas/hadron/diquark_w.h"
#include "meas/glue/mesplq.h"
#include "util/ft/sftmom.h"
#include "util/info/proginfo.h"
#include "util/info/unique_id.h"
#include "util/ferm/diractodr.h"
#include "meas/inline/io/named_objmap.h"
 
namespace Chroma 
{ 
  namespace InlineDiquarkEnv 
  { 
    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 = "DIQUARK";
 
    //! Register all the factories
    bool registerAll() 
    {
      bool success = true; 
      if (! registered)
      {
        success &= TheInlineMeasurementFactory::Instance().registerObject(name, createMeasurement);
        registered = true;
      }
      return success;
    }
 
 
    //! Param input
    void read(XMLReader& xml, const std::string& path, InlineDiquarkEnv::Params::Param_t& input)
    {
      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, "Dirac_basis", input.Dirac_basis);
    }
 
    //! Param output
    void write(XMLWriter& xml, const std::string& path, const InlineDiquarkEnv::Params::Param_t& input)
    {
      push(xml, path);
 
      int version = 1;
      write(xml, "version", version);
      write(xml, "Dirac_basis", input.Dirac_basis);
 
      pop(xml);
    }
 
    //! Propagator input
    void read(XMLReader& xml, const std::string& path, InlineDiquarkEnv::Params::NamedObject_t& input)
    {
      XMLReader inputtop(xml, path);
 
      read(inputtop, "gauge_id", input.gauge_id);
      read(inputtop, "prop_ids", input.prop_ids);
      read(inputtop, "diquark_id", input.diquark_id);
    }
 
    //! Propagator output
    void write(XMLWriter& xml, const std::string& path, const InlineDiquarkEnv::Params::NamedObject_t& input)
    {
      push(xml, path);
 
      write(xml, "gauge_id", input.gauge_id);
      write(xml, "prop_ids", input.prop_ids);
      write(xml, "diquark_id", input.diquark_id);
 
      pop(xml);
    }
 
 
    // Param stuff
    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;
 
        // Parameters for source construction
        read(paramtop, "Param", param);
 
        // Read in the output propagator/source configuration info
        read(paramtop, "NamedObject", named_obj);
      }
      catch(const std::string& e) 
      {
        QDPIO::cerr << __func__ << ": Caught Exception reading XML: " << e << std::endl;
        QDP_abort(1);
      }
    }
 
 
    void
    Params::writeXML(XMLWriter& xml_out, const std::string& path) 
    {
      push(xml_out, path);
    
      // Parameters for source construction
      write(xml_out, "Param", param);
 
      // Write out the output propagator/source configuration info
      write(xml_out, "NamedObject", named_obj);
 
      pop(xml_out);
    }
 
 
    // Function call
    void 
    InlineMeas::operator()(unsigned long update_no,
                           XMLWriter& xml_out) 
    {
      START_CODE();
 
      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 << InlineDiquarkEnv::name << ": caught dynamic cast error" 
                    << std::endl;
        QDP_abort(1);
      }
      catch (const std::string& e) 
      {
        QDPIO::cerr << InlineDiquarkEnv::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,"diquark");
      write(xml_out, "update_no", update_no);
 
      QDPIO::cout << InlineDiquarkEnv::name << ": Generalized propagator generation" << std::endl;
      StopWatch swatch;
 
      // Write out the input
      params.writeXML(xml_out, "Input");
 
      proginfo(xml_out);    // Print out basic program info
 
      // Write out the input
      params.writeXML(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", 1);
      pop(xml_out);
 
      // Calculate some gauge invariant observables just for info.
      MesPlq(xml_out, "Observables", u);
 
      // Check to make sure there are 2 ids
      const int Nprops = 2;
      if (params.named_obj.prop_ids.size() != Nprops)
      {
        QDPIO::cerr << "Error on input params - expecting 3 buffers" << std::endl;
        QDP_abort(1);
      }
 
      write(xml_out, "propIds", params.named_obj.prop_ids);
      write(xml_out, "diquarkId", params.named_obj.diquark_id);
 
      /*
       * Read the quark propagators and extract headers
       */
      multi1d<LatticePropagator> quark_propagator(Nprops);
      QQDiquark_t  diquark_header;
      diquark_header.Dirac_basis = false;
      diquark_header.forward_props.resize(Nprops);
 
      for(int i=0; i < Nprops; ++i)
      {
        QDPIO::cout << InlineDiquarkEnv::name << ": parse id = " << params.named_obj.prop_ids[i] << std::endl;
        try
        {
          // Snarf the data into a copy
          quark_propagator[i] =
            TheNamedObjMap::Instance().getData<LatticePropagator>(params.named_obj.prop_ids[i]);
 
          // Snarf the prop info. This is will throw if the prop_ids is not there.
          XMLReader prop_file_xml, prop_record_xml;
          TheNamedObjMap::Instance().get(params.named_obj.prop_ids[i]).getFileXML(prop_file_xml);
          TheNamedObjMap::Instance().get(params.named_obj.prop_ids[i]).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", diquark_header.forward_props[i]);
          }
        }
        catch( std::bad_cast ) 
        {
          QDPIO::cerr << InlineDiquarkEnv::name << ": caught dynamic cast error" 
                      << std::endl;
          QDP_abort(1);
        }
        catch (const std::string& e) 
        {
          QDPIO::cerr << InlineDiquarkEnv::name << ": error message: " << e 
                      << std::endl;
          QDP_abort(1);
        }
        QDPIO::cout << InlineDiquarkEnv::name << ": object successfully parsed" << std::endl;
      }
 
 
      // Save prop input
      write(xml_out, "Propagator_input", diquark_header);
 
      // Derived from input prop
      int j_decay = diquark_header.forward_props[0].source_header.j_decay;
 
      // Initialize the slow Fourier transform phases
      SftMom phases(0, true, j_decay);
 
      // Sanity check - write out the propagator (pion) correlator in the j_decay direction
      push(xml_out, "SinkSmearedProp_correlator");
      for(int i=0; i < Nprops; ++i)
      {
        multi1d<Double> prop_corr = sumMulti(localNorm2(TheNamedObjMap::Instance().getData<LatticePropagator>(params.named_obj.prop_ids[i])), 
                                             phases.getSet());
 
        push(xml_out, "elem");
        write(xml_out, "correlator_num", i);
        write(xml_out, "sink_smeared_prop_corr", prop_corr);
        pop(xml_out);
      }
      pop(xml_out);
 
      /*
       * Generalized propagator calculation
       */
      // Switch to Dirac-basis if desired.
      if (params.param.Dirac_basis)
      {
        diquark_header.Dirac_basis = true;
 
        // The spin basis matrix
        SpinMatrix U = DiracToDRMat();
 
        LatticePropagator q_tmp;
        for(int i=0; i < Nprops; ++i)
        {
          q_tmp = adj(U) * quark_propagator[i] * U;   // DeGrand-Rossi ---> Dirac
          quark_propagator[i] = q_tmp;
        }
      }
 
      // Compute diquark
      QQDiquarkContract_t diquark;
 
      QQDiquark(diquark,
                quark_propagator[0],
                quark_propagator[1]);
 
      // Now save the diquark object
      try
      {
        QDPIO::cout << "Attempt to update diquark object" << std::endl;
 
        XMLBufferWriter file_xml;
        push(file_xml, "diquark");
        write(file_xml, "id", uniqueId());  // NOTE: new ID form
        pop(file_xml);
 
        XMLBufferWriter record_xml;
        write(record_xml, "Diquark", diquark_header);
    
        // Store the source
        TheNamedObjMap::Instance().create<QQDiquarkContract_t>(params.named_obj.diquark_id);
        TheNamedObjMap::Instance().getData<QQDiquarkContract_t>(params.named_obj.diquark_id) = 
          diquark;
        TheNamedObjMap::Instance().get(params.named_obj.diquark_id).setFileXML(file_xml);
        TheNamedObjMap::Instance().get(params.named_obj.diquark_id).setRecordXML(record_xml);
 
        QDPIO::cout << "Diquark successfully update" << std::endl;
      }
      catch (std::bad_cast)
      {
        QDPIO::cerr << InlineDiquarkEnv::name << ": dynamic cast error" 
                    << std::endl;
        QDP_abort(1);
      }
      catch (const std::string& e) 
      {
        QDPIO::cerr << InlineDiquarkEnv::name << ": error message: " << e << std::endl;
        QDP_abort(1);
      }
 
      pop(xml_out);    // diquark
 
 
      snoop.stop();
      QDPIO::cout << InlineDiquarkEnv::name << ": total time = "
                  << snoop.getTimeInSeconds() 
                  << " secs" << std::endl;
 
      QDPIO::cout << InlineDiquarkEnv::name << ": ran successfully" << std::endl;
 
      END_CODE();
    } 
 
  }
 
}