From dde0da9e0ffee7a49510061a139ab2abc7ab55b9 Mon Sep 17 00:00:00 2001
From: liaogang <liaogang@baidu.com>
Date: Wed, 28 Jun 2017 01:31:24 +0800
Subject: [PATCH] ENH: Add cuda.h in platform

---
 paddle/platform/cuda.h | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 paddle/platform/cuda.h

diff --git a/paddle/platform/cuda.h b/paddle/platform/cuda.h
new file mode 100644
index 00000000000..864a5d3340a
--- /dev/null
+++ b/paddle/platform/cuda.h
@@ -0,0 +1,41 @@
+/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+
+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. */
+
+#pragma once
+
+#ifndef PADDLE_ONLY_CPU
+
+#include <thrust/system/cuda/error.h>
+#include <thrust/system_error.h>
+
+namespace paddle {
+namespace platform {
+
+inline void throw_on_error(cudaError_t e, const char* message) {
+  if (e) {
+    throw thrust::system_error(e, thrust::cuda_category(), message);
+  }
+}
+
+int GetDeviceCount(void) {
+    int count;
+    throw_on_error(cudaGetDeviceCount(&count),
+                   "cudaGetDeviceCount failed");
+    return count;
+}
+
+}  // namespace platform
+}  // namespace paddle
+
+#endif  // PADDLE_ONLY_CPU 
-- 
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