From 1de75c039fb7e6c9bb433f91c574d264eb397f9c Mon Sep 17 00:00:00 2001
From: hedaoyuan <hedaoyuan@baidu.com>
Date: Fri, 4 Nov 2016 00:40:37 +0800
Subject: [PATCH] report error when use parallel_nn to train recurrent_nn model
 (#335)

---
 paddle/gserver/gradientmachines/ParallelNeuralNetwork.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/paddle/gserver/gradientmachines/ParallelNeuralNetwork.cpp b/paddle/gserver/gradientmachines/ParallelNeuralNetwork.cpp
index 952df60a7d7..22698f58670 100644
--- a/paddle/gserver/gradientmachines/ParallelNeuralNetwork.cpp
+++ b/paddle/gserver/gradientmachines/ParallelNeuralNetwork.cpp
@@ -28,6 +28,12 @@ void ParallelNeuralNetwork::init(
     const std::vector<ParameterType>& parameterTypes, bool useGpu) {
   NeuralNetwork::init(config, callback, parameterTypes, useGpu);
 
+  if (config.type() == "recurrent_nn") {
+    LOG(FATAL)
+      << "You can not add `--parallel_nn=true` on the command line, "
+      << "parallel_nn training mode does not support the recurrent_nn model.";
+  }
+
   useGpu_ = useGpu;
   numDevices_ = 0;
   if (useGpu_) {
-- 
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