From d0a5620575a3ce94e0a7a5a20192e9307b0b9c93 Mon Sep 17 00:00:00 2001
From: wangchaochaohu <wangchao66@baidu.com>
Date: Tue, 5 Jan 2021 11:06:13 +0800
Subject: [PATCH] fix the compiler error when gcc4 cuda9.0 (#29997)

---
 paddle/fluid/operators/elementwise/elementwise_add_op.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/paddle/fluid/operators/elementwise/elementwise_add_op.h b/paddle/fluid/operators/elementwise/elementwise_add_op.h
index 731cef3d366..41e97a39466 100644
--- a/paddle/fluid/operators/elementwise/elementwise_add_op.h
+++ b/paddle/fluid/operators/elementwise/elementwise_add_op.h
@@ -179,6 +179,7 @@ __global__ void MatrixColReduce(const T *__restrict__ in, T *__restrict__ out,
   }
 }
 
+#if CUDA_VERSION >= 10000
 template <int SIZE>
 __global__ void VecFP16MatrixColReduce(const __half2 *__restrict__ in,
                                        __half2 *__restrict__ out, size_t width,
@@ -199,6 +200,7 @@ __global__ void VecFP16MatrixColReduce(const __half2 *__restrict__ in,
   }
 #endif
 }
+#endif
 
 template <typename T>
 __global__ void MatrixReduceLongWidth(const T *__restrict__ in, T *out,
@@ -365,6 +367,7 @@ class ElementwiseAddGradKernel : public ElemwiseGradKernel<T> {
       int max_blocks = std::max(max_physical_threads / (block_x * block_y), 1);
       int theory_block = (width + blocks.x - 1) / blocks.x;
       dim3 grids(std::min(theory_block, max_blocks));
+#if CUDA_VERSION >= 10000
       if (std::is_same<T, paddle::platform::float16>::value && width < 2048 &&
           width % 2 == 0 && height % 64 == 0) {
         auto &dev_ctx =
@@ -382,6 +385,7 @@ class ElementwiseAddGradKernel : public ElemwiseGradKernel<T> {
                                                                  width, height);
         return;
       }
+#endif
 
       if (width / height < 32) {
         MatrixColReduce<T, block_x, block_y><<<grids, blocks, 0, stream>>>(
-- 
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