LikelihoodCalculatorMPI.h

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#if !defined(LIKELIHOODCALCULATORMPI)
#define LIKELIHOODCALCULATORMPI

//******************************************************************************
// This file is part of AmpTools, a package for performing Amplitude Analysis
// 
// Copyright Trustees of Indiana University 2010, all rights reserved
// 
// This software written by Matthew Shepherd, Ryan Mitchell, and 
//                  Hrayr Matevosyan at Indiana University, Bloomington
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
//    notice and author attribution, this list of conditions and the
//    following disclaimer. 
// 2. Redistributions in binary form must reproduce the above copyright
//    notice and author attribution, this list of conditions and the
//    following disclaimer in the documentation and/or other materials
//    provided with the distribution.
// 3. Neither the name of the University nor the names of its contributors
//    may be used to endorse or promote products derived from this software
//    without specific prior written permission.
// 
// Creation of derivative forms of this software for commercial
// utilization may be subject to restriction; written permission may be
// obtained from the Trustees of Indiana University.
// 
// INDIANA UNIVERSITY AND THE AUTHORS MAKE NO REPRESENTATIONS OR WARRANTIES, 
// EXPRESS OR IMPLIED.  By way of example, but not limitation, INDIANA 
// UNIVERSITY MAKES NO REPRESENTATIONS OR WARRANTIES OF MERCANTABILITY OR 
// FITNESS FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF THIS SOFTWARE OR 
// DOCUMENTATION WILL NOT INFRINGE ANY PATENTS, COPYRIGHTS, TRADEMARKS, 
// OR OTHER RIGHTS.  Neither Indiana University nor the authors shall be 
// held liable for any liability with respect to any claim by the user or 
// any other party arising from use of the program.
//******************************************************************************

#include "IUAmpToolsMPI/MPITag.h"
#include "IUAmpToolsMPI/ParameterManagerMPI.h"
#include "IUAmpTools/LikelihoodCalculator.h"

class LikelihoodManagerMPI;
class MISubject;

class LikelihoodCalculatorMPI : public LikelihoodCalculator
{
  
  friend class LikelihoodManagerMPI;

 public:

  enum { kFirstId = MPITag::kMaxTags };

  LikelihoodCalculatorMPI( const IntensityManager& intenManager,
                           const NormIntInterface& normInt,
                           DataReader* dataReaderSignal,
                           DataReader* dataReaderBkgnd,
                           ParameterManagerMPI& parManager );
  
  ~LikelihoodCalculatorMPI();

  double operator()();
  
private:

  // the following functions are used by the LikelihoodManager to trigger
  // portions of the likeihood calculation -- they should only be called
  // on the worker nodes
  void updateParameters();
  void updateAmpParameter();
  void computeLikelihood();

  static int m_idCounter;

  void setupMPI();
  
  const IntensityManager& m_intenManager;

  ParameterManagerMPI& m_parManager;
  int m_thisId;

  int m_rank;
  int m_numProc;
  bool m_isMaster;
  bool m_firstPass;
};

#endif