inline_make_source_s.cc

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// $Id: inline_make_source_s.cc,v 3.2 2007/02/25 22:39:29 edwards Exp $
/*! \file
 * \brief Inline construction of make_source
 *
 * Construct source for propagator calculations
 */

#include "handle.h"
#include "meas/inline/hadron_s/inline_make_source_s.h"
#include "meas/inline/abs_inline_measurement_factory.h"
#include "meas/glue/mesplq.h"
#include "meas/sources/source_const_factory.h"
#include "meas/sources/source_const_aggregate.h"

#include "util/ft/sftmom.h"
#include "util/info/proginfo.h"
#include "util/info/unique_id.h"
#include "meas/inline/make_xml_file.h"

#include "meas/inline/io/named_objmap.h"

namespace Chroma 
{ 
  //! MakeSource input
  void read(XMLReader& xml, const string& path, InlineStaggeredMakeSourceEnv::Params::NamedObject_t& input)
  {
    XMLReader inputtop(xml, path);

    read(inputtop, "gauge_id", input.gauge_id);
    read(inputtop, "source_id", input.source_id);
  }

  //! MakeSource output
  void write(XMLWriter& xml, const string& path, const InlineStaggeredMakeSourceEnv::Params::NamedObject_t& input)
  {
    push(xml, path);

    write(xml, "gauge_id", input.gauge_id);
    write(xml, "source_id", input.source_id);

    pop(xml);
  }


  namespace InlineStaggeredMakeSourceEnv 
  { 
    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 = "MAKE_SOURCE_STAG";

    //! Register all the factories
    bool registerAll() 
    {
      bool success = true; 
      if (! registered)
      {
        success &= QuarkSourceConstructionEnv::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;

        // Parameters for source construction
        read(paramtop, "Param", param);

        // Named object output location
        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 << endl;
        QDP_abort(1);
      }
    }


    // Writer
    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 buffer ids
      write(xml_out, "NamedObject", named_obj);

      pop(xml_out);
    }


    // Function call
    void 
    InlineMeas::operator()(unsigned long update_no,
                           XMLWriter& xml_out) 
    {
      // If xml file not empty, then use alternate
      if (params.xml_file != "")
      {
        string xml_file = makeXMLFileName(params.xml_file, update_no);

        push(xml_out, "make_source_stag");
        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 
    InlineMeas::func(unsigned long update_no,
                     XMLWriter& xml_out) 
    {
      START_CODE();

      StopWatch snoop;
      snoop.reset();
      snoop.start();

      // 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 << name << ": caught dynamic cast error" 
                    << endl;
        QDP_abort(1);
      }
      catch (const string& e) 
      {
        QDPIO::cerr << name << ": map call failed: " << e 
                    << endl;
        QDP_abort(1);
      }

      // Save the initial state of the RNG
      QDP::Seed ran_seed;
      QDP::RNG::savern(ran_seed);

      push(xml_out, "make_source_stag");
      write(xml_out, "update_no", update_no);

      QDPIO::cout << name << ": propagator source constructor" << endl;

      proginfo(xml_out);    // Print out basic program info

      // Current state of the seed
      write(xml_out, "RNG", ran_seed);

      // Write out the input
      params.writeXML(xml_out, "Input");

      // Write out the config header
      write(xml_out, "Config_info", gauge_xml);

      // Calculate some gauge invariant observables just for info.
      MesPlq(xml_out, "Observables", u);

      //
      // Initialize source
      //
      LatticeStaggeredPropagator quark_source;

      try
      {
        std::istringstream  xml_s(params.param.source.xml);
        XMLReader  sourcetop(xml_s);
        QDPIO::cout << "Source = " << params.param.source.id << endl;

        Handle< QuarkSourceConstruction<LatticeStaggeredPropagator> >
          sourceConstruction(TheStagPropSourceConstructionFactory::Instance().createObject(params.param.source.id,
                                                                                           sourcetop,
                                                                                           params.param.source.path));
        quark_source = (*sourceConstruction)(u);
      }
      catch(const std::string& e) 
      {
        QDPIO::cerr << name << ": Caught Exception creating source: " << e << endl;
        QDP_abort(1);
      }


      // Sanity check - write out the norm2 of the source in the Nd-1 direction.
      // Use this for any possible verification.
      {
        // Initialize the slow Fourier transform phases
        SftMom phases(0, true, Nd-1);

        multi1d<Double> source_corr = sumMulti(localNorm2(quark_source),
                                               phases.getSet());

        push(xml_out, "Source_correlator");
        write(xml_out, "source_corr", source_corr);
        pop(xml_out);
      }
 

      // Now write the source
      try
      {
        QDPIO::cout << "Attempt to update source" << endl;

        XMLBufferWriter file_xml;
        push(file_xml, "make_source");
        write(file_xml, "id", uniqueId());  // NOTE: new ID form
        pop(file_xml);

        XMLBufferWriter record_xml;
        push(record_xml, "MakeSource");
        write(record_xml, "PropSource", params.param);
        write(record_xml, "RNG", ran_seed);
        write(record_xml, "Config_info", gauge_xml);
        pop(record_xml);
    
        // Store the source
        TheNamedObjMap::Instance().create<LatticeStaggeredPropagator>(params.named_obj.source_id);
        TheNamedObjMap::Instance().getData<LatticeStaggeredPropagator>(params.named_obj.source_id) = quark_source;
        TheNamedObjMap::Instance().get(params.named_obj.source_id).setFileXML(file_xml);
        TheNamedObjMap::Instance().get(params.named_obj.source_id).setRecordXML(record_xml);

        QDPIO::cout << "Source successfully update" << endl;
      }
      catch (std::bad_cast)
      {
        QDPIO::cerr << name << ": dynamic cast error" 
                    << endl;
        QDP_abort(1);
      }
      catch (const string& e) 
      {
        QDPIO::cerr << name << ": error message: " << e << endl;
        QDP_abort(1);
      }
    
      pop(xml_out);  // make_source

//    // Reset the seed
//    QDP::RNG::setrn(ran_seed);

      snoop.stop();
      QDPIO::cout << name << ": total time = "
                  << snoop.getTimeInSeconds() 
                  << " secs" << endl;

      QDPIO::cout << name << ": ran successfully" << endl;

      END_CODE();
    }

  }

}

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