Merge pull request #3398 from QiJune/fix_gcc_version

Switch from GCC 5 that doesn't work with Eigen to 4.8

Dockerfile

@@ -71,6 +71,21 @@ RUN pip install --upgrade pip && \
 RUN apt-get install -y libssl-dev libffi-dev
 RUN pip install certifi urllib3[secure]
 
+# TODO(qijun) The template library Eigen doesn't work well with GCC 5 
+# coming with the default Docker image, so we switch to use GCC 4.8 
+# by default. And I will check Eigen library later.
+
+RUN ln -sf gcc-4.8 /usr/bin/gcc && \
+    ln -sf gcc-ar-4.8 /usr/bin/gcc-ar && \
+    ln -sf gcc-nm-4.8 /usr/bin/gcc-nm && \
+    ln -sf gcc-ranlib-4.8 /usr/bin/gcc-ranlib && \
+    ln -sf gcc-4.8 /usr/bin/x86_64-linux-gnu-gcc && \
+    ln -sf gcc-ar-4.8 /usr/bin/x86_64-linux-gnu-gcc-ar && \
+    ln -sf gcc-nm-4.8 /usr/bin/x86_64-linux-gnu-gcc-nm && \
+    ln -sf gcc-ranlib-4.8 /usr/bin/x86_64-linux-gnu-gcc-ranlib && \
+    ln -sf g++-4.8 /usr/bin/g++ && \
+    ln -sf g++-4.8 /usr/bin/x86_64-linux-gnu-g++ 
+
 # Install woboq_codebrowser to /woboq
 RUN git clone https://github.com/woboq/woboq_codebrowser /woboq && \
     (cd /woboq \

paddle/operators/gaussian_random_op.cu

@@ -33,7 +33,8 @@ class GaussianRandomKernel : public framework::OpKernel {
 
     int seed = context.op_.GetAttr<int>("seed");
     if (seed == 0) {
-      seed = std::random_device()();
+      std::random_device rd;
+      seed = rd();
     }
     curandGenerator_t g;
     PADDLE_ENFORCE(platform::dynload::curandCreateGenerator(

paddle/operators/uniform_random_op.cu

@@ -51,7 +51,8 @@ class GPUUniformRandomKernel : public framework::OpKernel {
     unsigned int seed =
         static_cast<unsigned int>(context.op_.GetAttr<int>("seed"));
     if (seed == 0) {
-      seed = std::random_device()();
+      std::random_device rd;
+      seed = rd();
     }
     T min = static_cast<T>(context.op_.GetAttr<float>("min"));
     T max = static_cast<T>(context.op_.GetAttr<float>("max"));