Error when executing mnist_conv_dnn.py

mnist_conv_dnn-error.log

$ python mnist_conv_dnn.py
Using gpu device 0: GeForce GTX TITAN Black
Loading data...
Building model and compiling functions...
/usr/local/lib/python2.7/dist-packages/Lasagne-0.1.dev-py2.7.egg/lasagne/init.py:86: UserWarning: The uniform initializer no longer uses Glorot et al.'s approach to determine the bounds, but defaults to the range (-0.01, 0.01) instead. Please use the new GlorotUniform initializer to get the old behavior. GlorotUniform is now the default for all layers.
  warnings.warn("The uniform initializer no longer uses Glorot et al.'s "
/usr/local/lib/python2.7/dist-packages/Lasagne-0.1.dev-py2.7.egg/lasagne/layers/helper.py:69: UserWarning: get_all_layers() has been changed to return layers in topological order. The former implementation is still available as get_all_layers_old(), but will be removed before the first release of Lasagne. To ignore this warning, use `warnings.filterwarnings('ignore', '.*topo.*')`.
  warnings.warn("get_all_layers() has been changed to return layers in "
Traceback (most recent call last):
  File "mnist_conv_dnn.py", line 129, in <module>
    main()
  File "mnist_conv_dnn.py", line 104, in main
    X_tensor_type=T.tensor4,
  File "/home/moose/GitHub/las-origi/Lasagne/examples/mnist.py", line 148, in create_iter_functions
    y_batch: dataset['y_train'][batch_slice],
  File "/usr/local/lib/python2.7/dist-packages/theano/compile/function.py", line 266, in function
    profile=profile)
  File "/usr/local/lib/python2.7/dist-packages/theano/compile/pfunc.py", line 511, in pfunc
    on_unused_input=on_unused_input)
  File "/usr/local/lib/python2.7/dist-packages/theano/compile/function_module.py", line 1466, in orig_function
    defaults)
  File "/usr/local/lib/python2.7/dist-packages/theano/compile/function_module.py", line 1324, in create
    input_storage=input_storage_lists)
  File "/usr/local/lib/python2.7/dist-packages/theano/gof/link.py", line 519, in make_thunk
    output_storage=output_storage)[:3]
  File "/usr/local/lib/python2.7/dist-packages/theano/gof/vm.py", line 897, in make_all
    no_recycling))
  File "/usr/local/lib/python2.7/dist-packages/theano/sandbox/cuda/__init__.py", line 259, in make_thunk
    compute_map, no_recycling)
  File "/usr/local/lib/python2.7/dist-packages/theano/gof/op.py", line 739, in make_thunk
    output_storage=node_output_storage)
  File "/usr/local/lib/python2.7/dist-packages/theano/gof/cc.py", line 1073, in make_thunk
    keep_lock=keep_lock)
  File "/usr/local/lib/python2.7/dist-packages/theano/gof/cc.py", line 1015, in __compile__
    keep_lock=keep_lock)
  File "/usr/local/lib/python2.7/dist-packages/theano/gof/cc.py", line 1442, in cthunk_factory
    key=key, lnk=self, keep_lock=keep_lock)
  File "/usr/local/lib/python2.7/dist-packages/theano/gof/cmodule.py", line 1076, in module_from_key
    module = lnk.compile_cmodule(location)
  File "/usr/local/lib/python2.7/dist-packages/theano/gof/cc.py", line 1354, in compile_cmodule
    preargs=preargs)
  File "/usr/local/lib/python2.7/dist-packages/theano/sandbox/cuda/nvcc_compiler.py", line 434, in compile_str
    return dlimport(lib_filename)
  File "/usr/local/lib/python2.7/dist-packages/theano/gof/cmodule.py", line 293, in dlimport
    rval = __import__(module_name, {}, {}, [module_name])
RuntimeError: ('The following error happened while compiling the node', GpuDnnConv{workmem='small', inplace=True}(GpuContiguous.0, GpuContiguous.0, GpuAlloc{memset_0=True}.0, GpuDnnConvDesc{border_mode='valid', subsample=(1, 1), conv_mode='cross'}.0, Constant{1.0}, Constant{0.0}), '\n', 'could not create cuDNN handle: CUDNN_STATUS_NOT_INITIALIZED', "[GpuDnnConv{workmem='small', inplace=True}(<CudaNdarrayType(float32, 4D)>, <CudaNdarrayType(float32, 4D)>, <CudaNdarrayType(float32, 4D)>, <CDataType{cudnnConvolutionDescriptor_t}>, Constant{1.0}, Constant{0.0})]")

i have the question，how to solve it？ thank you