fix test_parallel_do.py

Author: jacquesqiao

paddle/fluid/platform/profiler.cc

@@ -110,6 +110,8 @@ Event::Event(EventType type, std::string name, uint32_t thread_id,
   has_cuda_ = dev_ctx ? platform::is_gpu_place(dev_ctx->GetPlace()) : false;
   if (has_cuda_) {
     auto* cuda_dev_ctx = static_cast<const CUDADeviceContext*>(dev_ctx);
+    PADDLE_ENFORCE(cudaSetDevice(
+        boost::get<platform::CUDAPlace>(cuda_dev_ctx->GetPlace()).device));
     PADDLE_ENFORCE(cudaGetDevice(&device_));
     PADDLE_ENFORCE(cudaEventCreate(&event_));
     auto stream = cuda_dev_ctx->stream();