Allow boot_bias for recurrent group to be static

8 years ago · 93539093f4
parent b7a6cc9cc3
commit 93539093f4
1 changed files with 1 additions and 1 deletions
--- a/paddle/gserver/gradientmachines/RecurrentGradientMachine.cpp
+++ b/paddle/gserver/gradientmachines/RecurrentGradientMachine.cpp
@ -184,7 +184,7 @@ public:
  }
  void backward(const UpdateCallback& callback) override {
-    if (biases_) {
+    if (biases_ && biases_->getWGrad()) {
      backwardActivation();
      biases_->getWGrad()->collectBias(*getOutputGrad(), 1);
      biases_->getParameterPtr()->incUpdate(callback);