GPU use question

[Li1991]

When I use GPU, I encounter this problem:

[11:16:43] /home/njfh/alex/mxnet/dmlc-core/include/dmlc/logging.h:300: [11:16:43] src/c_api/c_api_ndarray.cc:390: Operator _zeros cannot be run; requires at least one of FCompute, NDArrayFunction, FCreateOperator be registered

Stack trace returned 10 entries:
[bt] (0) /usr/local/lib/python2.7/dist-packages/mxnet-0.9.5-py2.7.egg/mxnet/libmxnet.so(_ZN4dmlc15LogMessageFatalD1Ev+0x3c) [0x7f34bf503a5c]
[bt] (1) /usr/local/lib/python2.7/dist-packages/mxnet-0.9.5-py2.7.egg/mxnet/libmxnet.so(MXImperativeInvoke+0x66d) [0x7f34bfd9811d]
[bt] (2) /usr/lib/x86_64-linux-gnu/libffi.so.6(ffi_call_unix64+0x4c) [0x7f34c2976adc]
[bt] (3) /usr/lib/x86_64-linux-gnu/libffi.so.6(ffi_call+0x1fc) [0x7f34c297640c]
[bt] (4) /usr/lib/python2.7/lib-dynload/_ctypes.x86_64-linux-gnu.so(_ctypes_callproc+0x48e) [0x7f34c2b8d5fe]
[bt] (5) /usr/lib/python2.7/lib-dynload/_ctypes.x86_64-linux-gnu.so(+0x15f9e) [0x7f34c2b8ef9e]
[bt] (6) python(PyEval_EvalFrameEx+0x98d) [0x5244dd]
[bt] (7) python(PyEval_EvalCodeEx+0x2b1) [0x555551]
[bt] (8) python(PyEval_EvalFrameEx+0x1a10) [0x525560]
[bt] (9) python(PyEval_EvalCodeEx+0x2b1) [0x555551]

Can you tell me how to solve this problem? @pangyupo Thank you very much!