inline_seqsource_w.cc

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/*! \file
 * \brief Inline construction of sequential sources
 *
 * Sequential source construction
 */
 
#include "handle.h"
#include "meas/inline/hadron/inline_seqsource_w.h"
#include "meas/inline/abs_inline_measurement_factory.h"
#include "meas/glue/mesplq.h"
#include "meas/hadron/seqsource_factory_w.h"
#include "meas/hadron/seqsource_aggregate_w.h"
#include "meas/sinks/sink_smearing_factory.h"
#include "meas/sinks/sink_smearing_aggregate.h"
#include "util/ft/sftmom.h"
#include "util/info/proginfo.h"
#include "util/info/unique_id.h"
#include "meas/inline/io/named_objmap.h"
 
namespace Chroma 
{ 
  //! Propagator input
  void read(XMLReader& xml, const std::string& path, InlineSeqSourceEnv::Params::NamedObject_t& input)
  {
    XMLReader inputtop(xml, path);
 
    read(inputtop, "gauge_id", input.gauge_id);
    read(inputtop, "prop_ids", input.prop_ids);
    read(inputtop, "seqsource_id", input.seqsource_id);
  }
 
  //! Propagator output
  void write(XMLWriter& xml, const std::string& path, const InlineSeqSourceEnv::Params::NamedObject_t& input)
  {
    push(xml, path);
 
    write(xml, "gauge_id", input.gauge_id);
    write(xml, "prop_ids", input.prop_ids);
    write(xml, "seqsource_id", input.seqsource_id);
 
    pop(xml);
  }
 
 
  namespace InlineSeqSourceEnv 
  { 
    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 = "SEQSOURCE";
 
    //! Register all the factories
    bool registerAll() 
    {
      bool success = true; 
      if (! registered)
      { 
        success &= QuarkSinkSmearingEnv::registerAll();
        success &= HadronSeqSourceEnv::registerAll();
        success &= TheInlineMeasurementFactory::Instance().registerObject(name, createMeasurement);
        registered = true;
      }
      return success;
    }
 
 
    // 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;
 
        // The parameters holds the version number
        read(paramtop, "Param", param);
 
        // The parameters for smearing the sink
        read(paramtop, "PropSink", sink_header);
 
        // Read in the forward_prop/seqsource 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);
    
      write(xml_out, "Param", param);
      write(xml_out, "PropSink", sink_header);
      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 << name << ": caught dynamic cast error" 
                    << std::endl;
        QDP_abort(1);
      }
      catch (const std::string& e) 
      {
        QDPIO::cerr << 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, "seqsource");
      write(xml_out, "update_no", update_no);
 
      QDPIO::cout << name << ": propagator sequential source constructor" << std::endl;
      StopWatch swatch;
 
      proginfo(xml_out);    // Print out basic program info
 
      // Write out the input
      params.writeXML(xml_out, "Input");
 
      // Write out the config header
      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);
 
      // Sanity check
      if (params.named_obj.prop_ids.size() == 0)
      {
        QDPIO::cerr << name << ": sanity error: " << std::endl;
        QDP_abort(1);
      }
 
      //
      // Read the quark propagator and extract headers
      //
      multi1d<LatticePropagator> forward_props(params.named_obj.prop_ids.size());
      multi1d<ForwardProp_t> forward_headers(params.named_obj.prop_ids.size());
      push(xml_out, "Forward_prop_infos");
      for(int loop=0; loop < params.named_obj.prop_ids.size(); ++loop)
      {
        push(xml_out, "elem");
        try
        {
          // Snarf the data into a copy
          forward_props[loop] =
            TheNamedObjMap::Instance().getData<LatticePropagator>(params.named_obj.prop_ids[loop]);
        
          // Snarf the source info. This is will throw if the source_id is not there
          XMLReader prop_file_xml, prop_record_xml;
          TheNamedObjMap::Instance().get(params.named_obj.prop_ids[loop]).getFileXML(prop_file_xml);
          TheNamedObjMap::Instance().get(params.named_obj.prop_ids[loop]).getRecordXML(prop_record_xml);
   
          // Try to invert this record XML into a ChromaProp struct
          {
            Propagator_t  header;
            read(prop_record_xml, "/Propagator", header);
 
            forward_headers[loop].prop_header   = header.prop_header;
            forward_headers[loop].source_header = header.source_header;
            forward_headers[loop].gauge_header  = header.gauge_header;
          }
 
          // Save prop input
          write(xml_out, "Propagator_info", prop_record_xml);
        }
        catch( std::bad_cast ) 
        {
          QDPIO::cerr << name << ": caught dynamic cast error" 
                      << std::endl;
          QDP_abort(1);
        }
        catch (const std::string& e) 
        {
          QDPIO::cerr << name << ": std::map call failed: " << e 
                      << std::endl;
          QDP_abort(1);
        }
        pop(xml_out);
      }
      pop(xml_out);
 
      QDPIO::cout << "Forward propagator successfully read and parsed" << std::endl;
 
      // Derived from input prop
      int j_decay  = forward_headers[0].source_header.j_decay;
 
      // Initialize the slow Fourier transform phases
      SftMom phases(0, true, j_decay);
 
      // 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_correlators");
      for(int loop=0; loop < params.named_obj.prop_ids.size(); ++loop)
      {
        multi1d<Double> forward_prop_corr = sumMulti(localNorm2(forward_props[loop]),
                                                     phases.getSet());
 
        push(xml_out, "elem");
        write(xml_out, "forward_prop_corr", forward_prop_corr);
        pop(xml_out);
      }
      pop(xml_out);
 
      // A sanity check
      if (params.param.t_sink < 0 || params.param.t_sink >= QDP::Layout::lattSize()[j_decay]) 
      {
        QDPIO::cerr << "Sink time coordinate incorrect." << std::endl;
        QDPIO::cerr << "t_sink = " << params.param.t_sink << std::endl;
        QDP_abort(1);
      }
 
 
      //------------------ Start main body of calculations -----------------------------
 
      LatticePropagator quark_prop_src;
 
      try
      {
        // Sink smear the forward propagators
        // NOTE: The smearing construction is pulled outside the loop
        // for efficiency. However, I'm anticipating that we will 
        // have different smearings at the sink of the forward props.
        // In that case, the loop needs to be in inverted.
        std::istringstream  xml_s(params.sink_header.sink.xml);
        XMLReader  sinktop(xml_s);
        QDPIO::cout << "Sink = " << params.sink_header.sink.id << std::endl;
        
        Handle< QuarkSourceSink<LatticePropagator> >
          sinkSmearing(ThePropSinkSmearingFactory::Instance().createObject(params.sink_header.sink.id,
                                                                           sinktop,
                                                                           params.sink_header.sink.path,
                                                                           u));
 
        // Do the sink smearing BEFORE the interpolating operator
        for(int loop=0; loop < params.named_obj.prop_ids.size(); ++loop)
        {
          forward_headers[loop].sink_header = params.sink_header;
          (*sinkSmearing)(forward_props[loop]);
        }
    
  
        //
        // Construct the sequential source
        //
        QDPIO::cout << "Sequential source = " << params.param.seqsrc.xml << std::endl;
 
        std::istringstream  xml_seq(params.param.seqsrc.xml);
        XMLReader  seqsrctop(xml_seq);
        QDPIO::cout << "SeqSource = " << params.param.seqsrc.id << std::endl;
        
        Handle< HadronSeqSource<LatticePropagator> >
          hadSeqSource(TheWilsonHadronSeqSourceFactory::Instance().createObject(params.param.seqsrc.id,
                                                                                seqsrctop,
                                                                                params.param.seqsrc.path));
 
        swatch.reset();
        swatch.start();
        quark_prop_src = (*hadSeqSource)(u, forward_headers, forward_props);
 
        swatch.stop();
    
        QDPIO::cout << "Hadron sequential source computed: time= " 
                    << swatch.getTimeInSeconds() 
                    << " secs" << std::endl;
 
 
        // Do the sink smearing AFTER the interpolating operator
        (*sinkSmearing)(quark_prop_src);
 
      }
      catch(const std::string& e) 
      {
        QDPIO::cerr << name << ": Caught Exception in sink: " << e << std::endl;
        QDP_abort(1);
      }
    
    
      // Sanity check - write out the norm2 of the propagator source in the j_decay direction
      // Use this for any possible verification
      {
        multi1d<Double> seqsource_corr = sumMulti(localNorm2(quark_prop_src), 
                                                  phases.getSet());
        
        push(xml_out, "SeqSource_correlator");
        write(xml_out, "seqsource_corr", seqsource_corr);
        pop(xml_out);
      }
 
 
      /*
       *  Write the sequential source out to a named buffer
       */
      try
      {
        QDPIO::cout << "Attempt to store sequential source" << std::endl;
 
        XMLBufferWriter file_xml;
        push(file_xml, "seqsource");
        write(file_xml, "id", uniqueId());  // NOTE: new ID form
        pop(file_xml);
 
        // Sequential source header
        // Header composed of all forward prop headers
        SequentialSource_t new_header;
        new_header.sink_header      = params.sink_header;
        new_header.seqsource_header = params.param;
        new_header.forward_props    = forward_headers;
        new_header.gauge_header     = gauge_xml.printCurrentContext();
 
        XMLBufferWriter record_xml;
        write(record_xml, "SequentialSource", new_header);
 
        // Store the seqsource
        TheNamedObjMap::Instance().create<LatticePropagator>(params.named_obj.seqsource_id);
        TheNamedObjMap::Instance().getData<LatticePropagator>(params.named_obj.seqsource_id) = quark_prop_src;
        TheNamedObjMap::Instance().get(params.named_obj.seqsource_id).setFileXML(file_xml);
        TheNamedObjMap::Instance().get(params.named_obj.seqsource_id).setRecordXML(record_xml);
 
        QDPIO::cout << "Sequential source successfully stored"  << std::endl;
      }
      catch (std::bad_cast)
      {
        QDPIO::cerr << name << ": dynamic cast error" 
                    << std::endl;
        QDP_abort(1);
      }
      catch (const std::string& e) 
      {
        QDPIO::cerr << name << ": error storing seqsource: " << e << std::endl;
        QDP_abort(1);
      }
 
      pop(xml_out);    // seqsource
 
      snoop.stop();
      QDPIO::cout << name << ": total time = "
                  << snoop.getTimeInSeconds() 
                  << " secs" << std::endl;
 
      QDPIO::cout << name << ": ran successfully" << std::endl;
 
      END_CODE();
    } 
 
  }
 
}