tensorrt 3.0.4 sample application issue

My Dev environment
OS : Ubunut 14.04
cuda : 8.0
cudnn : 7.1.1

tensorrt 3.0.4 sample applications are built successfully. but when it execute , print output like below.

Begin parsing model…
End parsing model…
Begin building engine…
ERROR: cudnnEngine.cpp (56) - Cuda Error in initializeCommonContext: 1
ERROR: cudnnEngine.cpp (56) - Cuda Error in initializeCommonContext: 1
sample_fasterRCNN: sampleFasterRCNN.cpp:145: void caffeToGIEModel(const string&, const string&, const std::vector<std::basic_string >&, unsigned int, nvcaffeparser1::IPluginFactory*, nvinfer1::IHostMemory**): Assertion `engine’ failed.
Aborted (core dumped)

How can I resolve this issue?
Please give me advice
Thank you!