inline_bar3ptfn_w.cc

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/*! \file
 * \brief Inline measurement of bar3ptfn
 *
 * Form-factor measurements
 */
 
#include "meas/inline/hadron/inline_bar3ptfn_w.h"
#include "meas/inline/abs_inline_measurement_factory.h"
#include "io/qprop_io.h"
#include "meas/glue/mesplq.h"
#include "util/ft/sftmom.h"
#include "util/info/proginfo.h"
#include "meas/hadron/formfac_w.h"
 
#include "meas/inline/io/named_objmap.h"
 
namespace Chroma 
{ 
  namespace InlineBar3ptfnEnv 
  { 
    namespace
    {
      AbsInlineMeasurement* createMeasurement(XMLReader& xml_in, 
                                              const std::string& path) 
      {
        return new InlineBar3ptfn(InlineBar3ptfnParams(xml_in, path));
      }
 
      //! Local registration flag
      bool registered = false;
    }
 
    const std::string name = "BAR3PTFN";
 
    //! Register all the factories
    bool registerAll() 
    {
      bool success = true; 
      if (! registered)
      {
        success &= TheInlineMeasurementFactory::Instance().registerObject(name, createMeasurement);
        registered = true;
      }
      return success;
    }
  }
 
 
  //! Propagator parameters
  void read(XMLReader& xml, const std::string& path, InlineBar3ptfnParams::SeqProp_t& input)
  {
    XMLReader inputtop(xml, path);
 
    read(inputtop, "seqprop_id", input.seqprop_id);
    read(inputtop, "gamma_insertion", input.gamma_insertion);
  }
 
  //! Propagator parameters
  void write(XMLWriter& xml, const std::string& path, const InlineBar3ptfnParams::SeqProp_t& input)
  {
    push(xml, path);
 
    write(xml, "seqprop_id", input.seqprop_id);
    write(xml, "gamma_insertion", input.gamma_insertion);
 
    pop(xml);
  }
 
 
  //! Propagator parameters
  void read(XMLReader& xml, const std::string& path, InlineBar3ptfnParams::NamedObject_t& input)
  {
    XMLReader inputtop(xml, path);
 
    read(inputtop, "gauge_id", input.gauge_id);
    read(inputtop, "prop_id", input.prop_id);
    read(inputtop, "seqprops", input.seqprops);
    read(inputtop, "bar3ptfn_file", input.bar3ptfn_file);
  }
 
  //! Propagator parameters
  void write(XMLWriter& xml, const std::string& path, const InlineBar3ptfnParams::NamedObject_t& input)
  {
    push(xml, path);
 
    write(xml, "gauge_id", input.gauge_id);
    write(xml, "prop_id", input.prop_id);
    write(xml, "seqprops", input.seqprops);
    write(xml, "bar3ptfn_file", input.bar3ptfn_file);
 
    pop(xml);
  }
 
 
  // Reader for input parameters
  void read(XMLReader& xml, const std::string& path, InlineBar3ptfnParams::Param_t& param)
  {
    XMLReader paramtop(xml, path);
 
    int version;
    read(paramtop, "version", version);
 
    switch (version) 
    {
    case 6:
      // Uggh, assume j_decay = Nd-1 here. This could come from source.
      param.j_decay = Nd-1;
      break;
 
    case 7:
      read(paramtop, "j_decay", param.j_decay);
      break;
 
    default :
      /**************************************************************************/
 
      QDPIO::cerr << "Input parameter version " << version << " unsupported." << std::endl;
      QDP_abort(1);
    }
 
    read(paramtop, "mom2_max", param.mom2_max);
  }
 
 
  // Reader for input parameters
  void write(XMLWriter& xml, const std::string& path, const InlineBar3ptfnParams::Param_t& param)
  {
    push(xml, path);
 
    int version = 6;
 
    write(xml, "version", version);
    write(xml, "mom2_max", param.mom2_max);
 
    pop(xml);
  }
 
 
  // Param stuff
  InlineBar3ptfnParams::InlineBar3ptfnParams()
  { 
    frequency = 0; 
  }
 
  InlineBar3ptfnParams::InlineBar3ptfnParams(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
  InlineBar3ptfnParams::write(XMLWriter& xml_out, const std::string& path) 
  {
    push(xml_out, path);
    
    // Parameters for source construction
    Chroma::write(xml_out, "Param", param);
 
    // Write out the output propagator/source configuration info
    Chroma::write(xml_out, "NamedObject", named_obj);
 
    pop(xml_out);
  }
 
 
 
  //--------------------------------------------------------------
  struct Output_version_t
  {
    int out_version;
  };
 
  struct FormFac_sequential_source_t
  {
    std::string            seqsrc_type;
    int               t_source;
    int               t_sink;
    multi1d<int>      sink_mom;
    int               gamma_insertion;
    FormFac_insertions_t  formFacs;
  };
 
  struct FormFac_Wilson_3Pt_fn_measurements_t
  {
    int  output_version;   // Unique id for each output version of the structures
    multi1d<FormFac_sequential_source_t> seqsrc;
  };
 
  struct Bar3ptfn_t
  {
    Output_version_t                      output_version;
    InlineBar3ptfnParams::Param_t         param;
    FormFac_Wilson_3Pt_fn_measurements_t  bar;
  };
 
 
  // params
  void write(BinaryWriter& bin, const Output_version_t& ver)
  {
    write(bin, ver.out_version);
  }
 
  // params
  void write(BinaryWriter& bin, const InlineBar3ptfnParams::Param_t& param)
  {
    write(bin, param.mom2_max);
    write(bin, param.j_decay);
    write(bin, Layout::lattSize());
  }
 
 
  // 
  void write(BinaryWriter& bin, const FormFac_sequential_source_t& src)
  {
    write(bin, src.seqsrc_type);
    write(bin, src.t_source);
    write(bin, src.t_sink);
    write(bin, src.sink_mom);
    write(bin, src.gamma_insertion);
    write(bin, src.formFacs);
  }
 
  // Write a hadron measurements
  void write(BinaryWriter& bin, const FormFac_Wilson_3Pt_fn_measurements_t& had)
  {
    write(bin, had.output_version);
    write(bin, had.seqsrc);
  }
 
  // Write all formfactor measurements
  void write(BinaryWriter& bin, const Bar3ptfn_t& bar)
  {
    write(bin, bar.output_version);
    write(bin, bar.param);
    write(bin, bar.bar);
  }
 
  //--------------------------------------------------------------
 
 
  // Function call
  void 
  InlineBar3ptfn::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 << InlineBar3ptfnEnv::name << ": caught dynamic cast error" 
                  << std::endl;
      QDP_abort(1);
    }
    catch (const std::string& e) 
    {
      QDPIO::cerr << InlineBar3ptfnEnv::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, "bar3ptfn");
    write(xml_out, "update_no", update_no);
 
    QDPIO::cout << InlineBar3ptfnEnv::name << ": Baryon form factors for Wilson fermions" << std::endl;
 
    proginfo(xml_out);    // Print out basic program info
 
    // 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", 11);
    pop(xml_out);
 
    // First calculate some gauge invariant observables just for info.
    // This is really cheap.
    MesPlq(xml_out, "Observables", u);
 
    //
    // Read the quark propagator and extract headers
    //
    XMLReader prop_file_xml, prop_record_xml;
    LatticePropagator quark_propagator;
    ChromaProp_t prop_header;
    PropSourceConst_t source_header;
    QDPIO::cout << "Attempt to parse forward propagator" << std::endl;
    try
    {
      // Snarf the forward prop
      quark_propagator =
        TheNamedObjMap::Instance().getData<LatticePropagator>(params.named_obj.prop_id);
        
      // Snarf the source info. This is will throw if the source_id is not there
      TheNamedObjMap::Instance().get(params.named_obj.prop_id).getFileXML(prop_file_xml);
      TheNamedObjMap::Instance().get(params.named_obj.prop_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, "/Propagator/ForwardProp", prop_header);
        read(prop_record_xml, "/Propagator/PropSource", source_header);
      }
 
      // Save propagator input
      write(xml_out, "Propagator_file_info", prop_file_xml);
      write(xml_out, "Propagator_record_info", prop_record_xml);
    }
    catch( std::bad_cast ) 
    {
      QDPIO::cerr << InlineBar3ptfnEnv::name << ": caught dynamic cast error" 
                  << std::endl;
      QDP_abort(1);
    }
    catch (const std::string& e) 
    {
      QDPIO::cerr << InlineBar3ptfnEnv::name << ": error message: " << e 
                  << std::endl;
      QDP_abort(1);
    }
    QDPIO::cout << "Forward propagator successfully parsed" << std::endl;
 
    // Derived from input prop
    multi1d<int> t_srce = source_header.getTSrce() ;
    int j_decay  = params.param.j_decay;
    int t_source = source_header.t_source;
 
    // Sanity check - write out the norm2 of the forward prop in the j_decay direction
    // Use this for any possible verification
    {
      // Initialize the slow Fourier transform phases
      SftMom phases(0, true, j_decay);
 
      multi1d<Double> forward_prop_corr = sumMulti(localNorm2(quark_propagator), 
                                                   phases.getSet());
 
      push(xml_out, "Forward_prop_correlator");
      write(xml_out, "forward_prop_corr", forward_prop_corr);
      pop(xml_out);
    }
 
 
    //
    // Big nested structure that is image of entire file
    //
    Bar3ptfn_t  bar3pt;
    bar3pt.output_version.out_version = 11;  // bump this up everytime something changes
    bar3pt.param = params.param; // copy entire structure
 
    push(xml_out, "Wilson_3Pt_fn_measurements");
 
    // Big nested structure that is image of all form-factors
//    FormFac_Wilson_3Pt_fn_measurements_t  formfacs;
    bar3pt.bar.output_version = 4;  // bump this up everytime something changes
    bar3pt.bar.seqsrc.resize(params.named_obj.seqprops.size());
 
    XMLArrayWriter  xml_seq_src(xml_out, params.named_obj.seqprops.size());
    push(xml_seq_src, "Sequential_source");
 
    for (int seq_src_ctr = 0; seq_src_ctr < params.named_obj.seqprops.size(); ++seq_src_ctr) 
    {
      push(xml_seq_src);
      write(xml_seq_src, "seq_src_ctr", seq_src_ctr);
 
      // Read the sequential propagator
      // Read the quark propagator and extract headers
      LatticePropagator seq_quark_prop;
      SeqSource_t seqsource_header;
      QDPIO::cout << "Attempt to parse sequential propagator" << std::endl;
      try
      {
        std::string seqprop_id = params.named_obj.seqprops[seq_src_ctr].seqprop_id;
 
        // Snarf the backward prop
        seq_quark_prop =
          TheNamedObjMap::Instance().getData<LatticePropagator>(seqprop_id);
        
        // Snarf the source info. This is will throw if the source_id is not there
        XMLReader seqprop_file_xml, seqprop_record_xml;
        TheNamedObjMap::Instance().get(seqprop_id).getFileXML(seqprop_file_xml);
        TheNamedObjMap::Instance().get(seqprop_id).getRecordXML(seqprop_record_xml);
   
        // Try to invert this record XML into a ChromaProp struct
        // Also pull out the id of this source
        // NEED SECURITY HERE - need a way to cross check props. Use the ID.
        {
          read(seqprop_record_xml, "/SequentialProp/SeqSource", seqsource_header);
        }
 
        // Save seqprop input
        write(xml_seq_src, "SequentialProp_file_info", seqprop_file_xml);
        write(xml_seq_src, "SequentialProp_record_info", seqprop_record_xml);
      }
      catch( std::bad_cast ) 
      {
        QDPIO::cerr << InlineBar3ptfnEnv::name << ": caught dynamic cast error" 
                    << std::endl;
        QDP_abort(1);
      }
      catch (const std::string& e) 
      {
        QDPIO::cerr << InlineBar3ptfnEnv::name << ": std::map call failed: " << e 
                    << std::endl;
        QDP_abort(1);
      }
      QDPIO::cout << "Sequential propagator successfully parsed" << std::endl;
 
      // Sanity check - write out the norm2 of the forward prop in the j_decay direction
      // Use this for any possible verification
      {
        // Initialize the slow Fourier transform phases
        SftMom phases(0, true, Nd-1);
      
        multi1d<Double> backward_prop_corr = sumMulti(localNorm2(seq_quark_prop), 
                                                      phases.getSet());
      
        push(xml_seq_src, "Backward_prop_correlator");
        write(xml_seq_src, "backward_prop_corr", backward_prop_corr);
        pop(xml_seq_src);
      }
 
      // Use extra gamma insertion
      int gamma_insertion = params.named_obj.seqprops[seq_src_ctr].gamma_insertion;
 
      // Derived from input seqprop
      std::string   seqsrc_type = seqsource_header.seqsrc.id;
      QDPIO::cout << "Seqsource name = " << seqsrc_type  << std::endl;
      int           t_sink   = seqsource_header.t_sink;
      multi1d<int>  sink_mom = seqsource_header.sink_mom;
 
      write(xml_seq_src, "hadron_type", "HADRON");
      write(xml_seq_src, "seqsrc_type", seqsrc_type);
      write(xml_seq_src, "t_source", t_source);
      write(xml_seq_src, "t_sink", t_sink);
      write(xml_seq_src, "sink_mom", sink_mom);
      write(xml_seq_src, "gamma_insertion", gamma_insertion);
        
      bar3pt.bar.seqsrc[seq_src_ctr].seqsrc_type   = seqsrc_type;
      bar3pt.bar.seqsrc[seq_src_ctr].t_source      = t_source;
      bar3pt.bar.seqsrc[seq_src_ctr].t_sink        = t_sink;
      bar3pt.bar.seqsrc[seq_src_ctr].sink_mom      = sink_mom;
      bar3pt.bar.seqsrc[seq_src_ctr].gamma_insertion = gamma_insertion;
        
 
      // Now the 3pt contractions
      SftMom phases(params.param.mom2_max, t_srce, sink_mom, false, j_decay);
      FormFac(bar3pt.bar.seqsrc[seq_src_ctr].formFacs, 
              u, quark_propagator, seq_quark_prop, gamma_insertion,
              phases, t_source);
 
      pop(xml_seq_src);   // elem
    } // end loop over sequential sources
 
    pop(xml_seq_src);  // Sequential_source
 
//    BinaryWFileriter  bin_out(params.named_obj.bar3ptfn_file);
//    write(bin_out, bar3ptfn);
//    bin_out.close();
 
    pop(xml_out);  // Wilson_3Pt_fn_measurements
 
    // Close the namelist output file XMLDAT
    pop(xml_out);     // bar3ptfn
 
    BinaryFileWriter  bin_out(params.named_obj.bar3ptfn_file);
    write(bin_out, bar3pt);
    bin_out.close();
 
    snoop.stop();
    QDPIO::cout << InlineBar3ptfnEnv::name << ": total time = "
                << snoop.getTimeInSeconds() 
                << " secs" << std::endl;
 
    QDPIO::cout << InlineBar3ptfnEnv::name << ": ran successfully" << std::endl;
 
    END_CODE();
  } 
 
}