C++ (Cpp) v2_cpu Beispiele

Beispiel #1

Datei: self_assign.cpp Projekt: 10imaging/viennacl

NumericT diff(std::vector<NumericT> const & v1, viennacl::vector<NumericT> const & v2)
{
  std::vector<NumericT> v2_cpu(v2.size());
  viennacl::backend::finish();
  viennacl::copy(v2.begin(), v2.end(), v2_cpu.begin());

  for (std::size_t i=0;i<v1.size(); ++i)
  {
    if ( std::max( std::fabs(v2_cpu[i]), std::fabs(v1[i]) ) > 0 )
      v2_cpu[i] = std::fabs(v2_cpu[i] - v1[i]) / std::max( std::fabs(v2_cpu[i]), std::fabs(v1[i]) );
    else
      v2_cpu[i] = 0.0;

    if (v2_cpu[i] > 0.0001)
    {
      //std::cout << "Neighbor: "      << i-1 << ": " << v1[i-1] << " vs. " << v2_cpu[i-1] << std::endl;
      std::cout << "Error at entry " << i   << ": " << v1[i]   << " vs. " << v2[i]   << std::endl;
      //std::cout << "Neighbor: "      << i+1 << ": " << v1[i+1] << " vs. " << v2_cpu[i+1] << std::endl;
      exit(EXIT_FAILURE);
    }
  }

  NumericT inf_norm = 0;
  for (std::size_t i=0;i<v2_cpu.size(); ++i)
    inf_norm = std::max<NumericT>(inf_norm, std::fabs(v2_cpu[i]));

  return inf_norm;
}

Beispiel #2

Datei: vector_uint.cpp Projekt: 10imaging/viennacl

ScalarType diff(std::vector<ScalarType> const & v1, VCLVectorType const & v2)
{
   std::vector<ScalarType> v2_cpu(v2.size());
   viennacl::backend::finish();  //workaround for a bug in APP SDK 2.7 on Trinity APUs (with Catalyst 12.8)
   viennacl::copy(v2.begin(), v2.end(), v2_cpu.begin());

   for (unsigned int i=0;i<v1.size(); ++i)
   {
      if (v2_cpu[i] != v1[i])
        return 1;
   }

   return 0;
}

Beispiel #3

Datei: scheduler_matrix_matrix.cpp Projekt: HSAFoundation/viennacl-dev

ScalarType diff(std::vector<ScalarType> const & v1, VCLVectorType const & v2)
{
   std::vector<ScalarType> v2_cpu(v2.size());
   viennacl::backend::finish();  //workaround for a bug in APP SDK 2.7 on Trinity APUs (with Catalyst 12.8)
   viennacl::copy(v2.begin(), v2.end(), v2_cpu.begin());

   ScalarType norm_inf = 0;
   for (unsigned int i=0;i<v1.size(); ++i)
   {
     if ( std::max( std::fabs(v2_cpu[i]), std::fabs(v1[i]) ) > 0 )
     {
       ScalarType tmp = std::fabs(v2_cpu[i] - v1[i]) / std::max( std::fabs(v2_cpu[i]), std::fabs(v1[i]) );
       if (tmp > norm_inf)
         norm_inf = tmp;
     }
   }

   return norm_inf;
}

Beispiel #4

Datei: libviennacl_blas3.cpp Projekt: YannCobigo/viennacl-dev

ScalarType diff(std::vector<ScalarType> const & v1, ViennaCLVectorType const & vcl_vec)
{
   std::vector<ScalarType> v2_cpu(vcl_vec.size());
   viennacl::backend::finish();
   viennacl::copy(vcl_vec, v2_cpu);

   ScalarType inf_norm = 0;
   for (unsigned int i=0;i<v1.size(); ++i)
   {
      if ( std::max( std::fabs(v2_cpu[i]), std::fabs(v1[i]) ) > 0 )
         v2_cpu[i] = std::fabs(v2_cpu[i] - v1[i]) / std::max( std::fabs(v2_cpu[i]), std::fabs(v1[i]) );
      else
         v2_cpu[i] = 0.0;

      if (v2_cpu[i] > inf_norm)
        inf_norm = v2_cpu[i];
   }

   return inf_norm;
}