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From GitBox <...@apache.org>
Subject [GitHub] [incubator-tvm] alexwong opened a new issue #5835: Darknet library support out of date/inconsistent with master?
Date Wed, 17 Jun 2020 18:45:19 GMT

alexwong opened a new issue #5835:
URL: https://github.com/apache/incubator-tvm/issues/5835


   I recently tried to run the darknet tutorial using a shared library built from the master
branch (https://github.com/pjreddie/darknet) rather than the one hosted here https://github.com/dmlc/web-data/tree/master/darknet/lib
which seems to be https://github.com/siju-samuel/darknet/tree/tvm. I am hitting an error in
the darknet->relay converter.
   
   ```
   Traceback (most recent call last):
   
     File "tutorials/frontend/from_darknet.py", line 92, in <module>
       mod, params = relay.frontend.from_darknet(net, dtype=dtype, shape=data.shape)
   
     File "/tvm/python/tvm/relay/frontend/darknet.py", line 851, in from_darknet
       return GraphProto(net, shape, dtype).from_darknet()
   
     File "/tvm/python/tvm/relay/frontend/darknet.py", line 815, in from_darknet
       params = self._get_darknet_params(self._net.layers[i], prefix)
   
     File "/tvm/python/tvm/relay/frontend/darknet.py", line 664, in _get_darknet_params
       params = self._get_convolution_weights(layer, opname)
   
     File "/tvm/python/tvm/relay/frontend/darknet.py", line 470, in _get_convolution_weights
       biases = self._read_memory_buffer((layer.n, ), layer.biases)
   
     File "/tvm/python/tvm/relay/frontend/darknet.py", line 455, in _read_memory_buffer
       data_np[i] = data[i]
   
   RuntimeError: cannot dereference null pointer from cdata 'float *'
   ```
   
   Using either the .so hosted by TVM or building https://github.com/siju-samuel/darknet/tree/tvm
works fine. I am wondering if this is a version problem between the master darknet branch
and the one TVM is testing against (although, it seems the one TVM is using isn't that stale).
If so, I am also wondering if/when the converter and library used by TVM for testing will
be updated to the master version? @siju-samuel 


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