backend.cpp

// FEAT3: Finite Element Analysis Toolbox, Version 3
// Copyright (C) 2010 by Stefan Turek & the FEAT group
// FEAT3 is released under the GNU General Public License version 3,
// see the file 'copyright.txt' in the top level directory for details.
 
#include <kernel/backend.hpp>
#ifdef FEAT_HAVE_CUDA
#include <kernel/util/cuda_util.hpp>
#endif
 
namespace FEAT
{
  PreferredBackend Backend::_preferred_backend = PreferredBackend::generic;
 
  void Backend::set_preferred_backend(PreferredBackend preferred_backend)
  {
    _preferred_backend = preferred_backend;
    if (preferred_backend != PreferredBackend::cuda)
    {
#ifdef FEAT_HAVE_CUDA
      FEAT::Util::cuda_synchronize();
#endif
    }
  }
 
  PreferredBackend Backend::get_preferred_backend()
  {
    return _preferred_backend;
  }
 
  std::ostream & operator<< (std::ostream & left, PreferredBackend value)
  {
    switch (value)
    {
    case PreferredBackend::generic:
      left << "generic";
      break;
 
    case PreferredBackend::mkl:
      left << "mkl";
      break;
 
    case PreferredBackend::cuda:
      left << "cuda";
      break;
 
    default:
      left << "unknown preferred backend";
      break;
    }
 
    return left;
  }
 
} // namespace FEAT