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-rw-r--r--unsupported/Eigen/CXX11/src/Tensor/TensorReductionCuda.h10
1 files changed, 2 insertions, 8 deletions
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorReductionCuda.h b/unsupported/Eigen/CXX11/src/Tensor/TensorReductionCuda.h
index 4f2dfcb7a..7368768cf 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorReductionCuda.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorReductionCuda.h
@@ -291,7 +291,7 @@ struct FullReducer<Self, Op, GpuDevice, Vectorizable> {
#ifdef EIGEN_HAS_CUDA_FP16
static const bool HasOptimizedImplementation = !Op::IsStateful &&
(internal::is_same<typename Self::CoeffReturnType, float>::value ||
- internal::is_same<typename Self::CoeffReturnType, Eigen::half>::value);
+ (internal::is_same<typename Self::CoeffReturnType, Eigen::half>::value && Op::PacketAccess));
#else
static const bool HasOptimizedImplementation = !Op::IsStateful &&
internal::is_same<typename Self::CoeffReturnType, float>::value;
@@ -475,12 +475,6 @@ __global__ void InnerReductionKernelHalfFloat(Reducer reducer, const Self input,
template <typename Self, typename Op>
struct InnerReductionLauncher {
- // Unfortunately nvidia doesn't support well exotic types such as complex,
- // so reduce the scope of the optimized version of the code to the simple case
- // of floats.
- static const bool HasOptimizedImplementation = !Op::IsStateful &&
- internal::is_same<typename Self::CoeffReturnType, float>::value;
-
template <typename OutputType>
static EIGEN_DEVICE_FUNC bool run(const Self&, Op&, const GpuDevice&, OutputType*, typename Self::Index, typename Self::Index) {
assert(false && "Should only be called to reduce floats and half floats on a gpu device");
@@ -561,7 +555,7 @@ struct InnerReducer<Self, Op, GpuDevice> {
#ifdef EIGEN_HAS_CUDA_FP16
static const bool HasOptimizedImplementation = !Op::IsStateful &&
(internal::is_same<typename Self::CoeffReturnType, float>::value ||
- internal::is_same<typename Self::CoeffReturnType, Eigen::half>::value);
+ (internal::is_same<typename Self::CoeffReturnType, Eigen::half>::value && Op::PacketAccess));
#else
static const bool HasOptimizedImplementation = !Op::IsStateful &&
internal::is_same<typename Self::CoeffReturnType, float>::value;