NormIntInterfaceMPI.h

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#if !defined(NORMINTINTERFACEMPI)
#define NORMINTINTERFACEMPI

//******************************************************************************
// 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 
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#include "IUAmpTools/NormIntInterface.h"

class NormIntInterfaceMPI : public NormIntInterface
{
  
public:
  
  enum IntType { kNormInt, kAmpInt };
  
  NormIntInterfaceMPI( const string& normIntFile );
  NormIntInterfaceMPI( DataReader* genMCData, DataReader* accMCData, 
                      const IntensityManager& intenManager );
  
  ~NormIntInterfaceMPI();
  
  // override these methods so that we can trigger a parallel recompuation
  // of normalization integrals in the case that a parameter has changed
  
  complex< double > normInt( string amp, string conjAmp, bool forceUseCache = false ) const;
  void forceCacheUpdate( bool normIntOnly = false ) const;
  
private:
  
  void setupMPI();
  void sumIntegrals( IntType type ) const;
  
  bool m_mpiSetup;
  
  int m_rank;
  int m_numProc;
  bool m_isMaster;
};

#endif