1 files changed, 54 insertions, 0 deletions
diff --git a/tensorflow/core/kernels/scan_ops_gpu.cu.cc b/tensorflow/core/kernels/scan_ops_gpu.cu.cc
new file mode 100644
index 0000000000..d1cd9aa478
--- /dev/null
+++ b/tensorflow/core/kernels/scan_ops_gpu.cu.cc
@@ -0,0 +1,54 @@
+/* Copyright 2016 The TensorFlow Authors. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+==============================================================================*/
+
+#if GOOGLE_CUDA
+
+#define EIGEN_USE_GPU
+
+#include "tensorflow/core/framework/numeric_types.h"
+#include "tensorflow/core/framework/register_types.h"
+
+#include "tensorflow/core/kernels/scan_ops.h"
+
+namespace tensorflow {
+
+typedef Eigen::GpuDevice GPUDevice;
+typedef Eigen::Index Index;
+
+#define DEFINE(REDUCER, T, D) \
+  template struct functor::Scan<GPUDevice, REDUCER, T, D>;
+
+#define DEFINE_FOR_ALL_DIMS(REDUCER, T) \
+  DEFINE(REDUCER, T, 1);                \
+  DEFINE(REDUCER, T, 2);                \
+  DEFINE(REDUCER, T, 3);                \
+  DEFINE(REDUCER, T, 4);                \
+  DEFINE(REDUCER, T, 5);                \
+  DEFINE(REDUCER, T, 6);                \
+  DEFINE(REDUCER, T, 7);                \
+  DEFINE(REDUCER, T, 8)
+
+#define DEFINE_FOR_ALL_REDUCERS(T)                        \
+  DEFINE_FOR_ALL_DIMS(Eigen::internal::SumReducer<T>, T); \
+  DEFINE_FOR_ALL_DIMS(Eigen::internal::ProdReducer<T>, T);
+
+TF_CALL_GPU_NUMBER_TYPES(DEFINE_FOR_ALL_REDUCERS);
+#undef DEFINE_FOR_ALL_REDUCERS
+#undef DEFINE_FOR_ALL_DIMS
+#undef DEFINE
+
+}  // end namespace tensorflow
+
+#endif  // GOOGLE_CUDA