[MxNet][NNVM] _contrib_quantize is not supported in nnvm

I could quantize vgg-ssd-300 model from incubator-mxnet successfully. But when deploy this quantized model by Mxnet frontend in NNVM, i got this error:

Traceback (most recent call last):
File “vgg_ssd__single.py”, line 118, in
nnvm_sym, nnvm_params = nnvm.frontend.from_mxnet(mx_sym, args, auxs)
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 439, in from_mxnet
sym = _from_mxnet_impl(symbol, {})
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 390, in _from_mxnet_impl
return [_from_mxnet_impl(s, graph) for s in symbol]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 402, in _from_mxnet_impl
childs = [_from_mxnet_impl(childs[i], graph) for i in range(len(childs.list_outputs()))]
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 404, in _from_mxnet_impl
node = _convert_symbol(op_name, childs, attr)
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 363, in _convert_symbol
_raise_not_supported('Operator: ’ + op_name)
File “/usr/local/lib/python2.7/dist-packages/nnvm-0.8.0-py2.7.egg/nnvm/frontend/mxnet.py”, line 24, in _raise_not_supported
raise NotImplementedError(err)
NotImplementedError: Operator: _contrib_quantize is not supported in nnvm.

So, Can anyone help me or give me a guidance how to fix this error?

Excuse me , did you solve the problem???
‘ from_mxnet ’ function cant’s parse Json(sym)correctly from incubator-mxne