syssolver_fgmres_dr_params.h

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// -*- C++ -*-
/*! \file
 *  \brief Solve an FGMRESR-DR system
 */
 
#ifndef __syssolver_fgmres_dr_params_h__
#define __syssolver_fgmres_dr_params_h__
 
#include "chromabase.h"
#include "io/xml_group_reader.h"
 
namespace Chroma
{
 
  //! Params for FGMRESDR inverter
  /*! \ingroup invert */
  struct SysSolverFGMRESDRParams
  {
    SysSolverFGMRESDRParams();
    SysSolverFGMRESDRParams(XMLReader& in, const std::string& path);
    
    Real          RsdTarget;           /*!< Target Residuum */
    int           NKrylov;             /*!< Number of vectors before restart */
    int           NDefl;               /*!< Number of deflation vectors */
    int           MaxIter;             /*!< Total Number of Iterations */
    GroupXML_t    PrecondParams;       /*!< Parameters for a preconditioner */
  };
 
 
  // Reader/writers
  /*! \ingroup invert */
  void read(XMLReader& xml, const std::string& path, SysSolverFGMRESDRParams& param);
 
  /*! \ingroup invert */
  void write(XMLWriter& xml, const std::string& path, const SysSolverFGMRESDRParams& param);
 
} // End namespace
 
#endif