Fix CPU compile

paddle/fluid/framework/details/op_handle_base.cc

@@ -109,18 +109,18 @@ void OpHandleBase::RunAndRecordEvent(const std::function<void()> &callback) {
 
 void OpHandleBase::RunAndRecordEvent(platform::Place p,
                                      const std::function<void()> &callback) {
+#ifdef PADDLE_WITH_CUDA
   if (platform::is_cpu_place(p) || events_.empty()) {
     callback();
   } else {
-#ifdef PADDLE_WITH_CUDA
     auto *ctx = dev_ctxes_.at(p);
     auto *cuda_ctx = static_cast<platform::CUDADeviceContext *>(ctx);
     cuda_ctx->RecordEvent(events_.at(boost::get<platform::CUDAPlace>(p).device),
                           callback);
+  }
 #else
-    PADDLE_THROW("Not implemented");
+  callback();
 #endif
-  }
 }
 
 }  // namespace details