fix ~IpuBackend() quit error (PaddlePaddle#60)

graphcore · Aug 13, 2021 · ff4ba95 · ff4ba95
1 parent 82d4973
commit ff4ba95
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/paddle/fluid/framework/ipu/ipu_backend.cc b/paddle/fluid/framework/ipu/ipu_backend.cc
@@ -530,8 +530,12 @@ void IpuBackend::AttachDevice(int id) {
 }
 
 IpuBackend::~IpuBackend() {
+  if (instance_ == nullptr) {
+    return;
+  }
+
   // detach device
-  if (curr_device_->isAttached()) {
+  if (curr_device_ != nullptr && curr_device_->isAttached()) {
     curr_device_->detach();
   }
 }