inline_link_smear.cc

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/*! \file
 *  \brief Inline Link smearing
 */
 
#include "handle.h"
#include "meas/inline/smear/inline_link_smear.h"
#include "meas/inline/abs_inline_measurement_factory.h"
#include "meas/glue/mesplq.h"
#include "util/gauge/unit_check.h"
#include "meas/inline/io/named_objmap.h"
#include "meas/smear/link_smearing_factory.h"
 
 
namespace Chroma 
{ 
  // Reader for out gauge file
  void read(XMLReader& xml, const std::string& path, InlineLinkSmearEnv::Params::NamedObject_t& input)
  {
    XMLReader inputtop(xml, path);
    read(inputtop, "gauge_id", input.gauge_id);
    read(inputtop, "linksmear_id", input.linksmear_id);
  }
 
  // Reader for out gauge file
  void write(XMLWriter& xml, const std::string& path, const InlineLinkSmearEnv::Params::NamedObject_t& input)
  {
    push(xml, path);
 
    write(xml, "gauge_id", input.gauge_id);
    write(xml, "linksmear_id", input.linksmear_id);
 
    pop(xml);
  }
 
 
  namespace InlineLinkSmearEnv 
  { 
    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 = "LINK_SMEAR";
 
    //! Register all the factories
    bool registerAll() 
    {
      bool success = true; 
      if (! registered)
      {
        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;
      
        // Read program parameters
        link_smearing = readXMLGroup(paramtop, "Param", "LinkSmearingType");
 
        // Read in the linksmear outfile
        read(paramtop, "NamedObject", named_obj);
      }
      catch(const std::string& e) 
      {
        QDPIO::cerr << "Caught Exception reading XML: " << e << std::endl;
        QDP_abort(1);
      }
    }
 
 
    // Write params
    void
    Params::writeXML(XMLWriter& xml, const std::string& path) 
    {
      push(xml, path);
      
      xml << link_smearing.xml;
      write(xml, "NamedObject", named_obj);
 
      pop(xml);
    }
 
 
    void 
    InlineMeas::operator()(unsigned long update_no,
                           XMLWriter& xml_out) 
    {
      START_CODE();
 
      StopWatch snoop;
      snoop.reset();
      snoop.start();
 
      // Grab the gauge field
      XMLBufferWriter gauge_xml;
      multi1d<LatticeColorMatrix> u = 
        TheNamedObjMap::Instance().getData< multi1d<LatticeColorMatrix> >(params.named_obj.gauge_id);
      TheNamedObjMap::Instance().get(params.named_obj.gauge_id).getRecordXML(gauge_xml);
 
      push(xml_out, "linksmear");
      write(xml_out, "update_no", update_no);
    
      // 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
      MesPlq(xml_out, "Observables", u);
 
      //
      // Smear the gauge field if needed
      //
      multi1d<LatticeColorMatrix> u_smr = u;
      try 
      {
        std::istringstream  xml_l(params.link_smearing.xml);
        XMLReader  linktop(xml_l);
//      const std::string link_path = "/Param";
        QDPIO::cout << "Link smearing type = " << params.link_smearing.id << std::endl;
        
        Handle< LinkSmearing >
          linkSmearing(TheLinkSmearingFactory::Instance().createObject(params.link_smearing.id,
                                                                       linktop,
                                                                       params.link_smearing.path));
        (*linkSmearing)(u_smr);
      }
      catch(const std::string& e) 
      {
        QDPIO::cerr << InlineLinkSmearEnv::name << ": error creating link smearing: " << e << std::endl;
        QDP_abort(1);
      }
 
      // Check if the smeared gauge field is unitary
      unitarityCheck(u_smr);
  
      // Again calculate some gauge invariant observables
      MesPlq(xml_out, "Link_observables", u_smr);
 
      // Now store the configuration to a memory object
      {
        XMLBufferWriter file_xml, record_xml;
        push(file_xml, "gauge");
        write(file_xml, "id", int(0));
        pop(file_xml);
        record_xml << gauge_xml;
 
        // Store the gauge field
        TheNamedObjMap::Instance().create< multi1d<LatticeColorMatrix> >(params.named_obj.linksmear_id);
        TheNamedObjMap::Instance().getData< multi1d<LatticeColorMatrix> >(params.named_obj.linksmear_id) = u_smr;
        TheNamedObjMap::Instance().get(params.named_obj.linksmear_id).setFileXML(file_xml);
        TheNamedObjMap::Instance().get(params.named_obj.linksmear_id).setRecordXML(record_xml);
      }
 
      pop(xml_out);
 
 
      snoop.stop();
      QDPIO::cout << InlineLinkSmearEnv::name << ": total time = "
                  << snoop.getTimeInSeconds() 
                  << " secs" << std::endl;
 
      QDPIO::cout << InlineLinkSmearEnv::name << ": ran successfully" << std::endl;
 
      END_CODE();
    } 
 
  }
 
}