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Added support for tensor reductions on half floats

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Benoit Steiner
2016-02-19 10:05:59 -08:00
parent 5c4901b83a
commit 180156ba1a
3 changed files with 45 additions and 13 deletions
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20
Eigen/src/Core/arch/CUDA/TypeCasting.h
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@@ -34,6 +34,26 @@ template<>
struct functor_traits<scalar_cast_op<float, half> >
{ enum { Cost = NumTraits<float>::AddCost, PacketAccess = false }; };
template<>
struct scalar_cast_op<int, half> {
EIGEN_EMPTY_STRUCT_CTOR(scalar_cast_op)
typedef half result_type;
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE half operator() (const int& a) const {
#if defined(__CUDA_ARCH__) && __CUDA_ARCH__ >= 530
return __float2half(static_cast<float>(a));
#else
assert(false && "tbd");
return half();
#endif
}
};
template<>
struct functor_traits<scalar_cast_op<int, half> >
{ enum { Cost = NumTraits<float>::AddCost, PacketAccess = false }; };
template<>
struct scalar_cast_op<half, float> {
EIGEN_EMPTY_STRUCT_CTOR(scalar_cast_op)