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From GitBox <...@apache.org>
Subject [GitHub] [incubator-tvm] schliffen opened a new issue #5449: Windows OSError: "exception: access violation reading 0x0000000000000000"
Date Mon, 27 Apr 2020 06:52:31 GMT

schliffen opened a new issue #5449:
URL: https://github.com/apache/incubator-tvm/issues/5449


   We are trying to convert a mxnet model into tvm (v7) in windows using the following part
of code:
   loading model (works fine):
    `      mx_sym, args, auxs = mx.model.load_checkpoint(root + ap.mdlrt, 0)
           mod, params = relay.frontend.from_mxnet(mx_sym, shape_dict, dtype, arg_params=args,
aux_params=auxs)
   `
   build tvm model (fails):
   `    with relay.build_config(opt_level=3):
           graph, mod, params = relay.build(mod, target, params=params)
   `
   in this relay.build we faced with the following error (full log):
   `[08:31:15] C:\Jenkins\workspace\mxnet-tag\mxnet\src\nnvm\legacy_json_util.cc:209: Loading
symbol saved by previous version v1.2.0. Attempting to upgrade...
   [08:31:15] C:\Jenkins\workspace\mxnet-tag\mxnet\src\nnvm\legacy_json_util.cc:217: Symbol
successfully upgraded!
   Traceback (most recent call last):
     File "E:/TVM/faceTransfer/mxnet2Tvm.py", line 96, in save_tvm_model
       graph, mod, params = relay.build(mod, target, params=params)
     File "C:\Python\Python37\site-packages\tvm-0.7.dev1-py3.7-win-amd64.egg\tvm\relay\build_module.py",
line 251, in build
       graph_json, mod, params = bld_mod.build(mod, target, target_host, params)
     File "C:\Python\Python37\site-packages\tvm-0.7.dev1-py3.7-win-amd64.egg\tvm\relay\build_module.py",
line 120, in build
       self._build(mod, target, target_host)
     File "C:\Python\Python37\site-packages\tvm-0.7.dev1-py3.7-win-amd64.egg\tvm\_ffi\_ctypes\packed_func.py",
line 215, in __call__
       ctypes.byref(ret_val), ctypes.byref(ret_tcode)) != 0:
   OSError: exception: access violation reading 0x0000000000000000`
   
   system details: Windows 10, Visual Studio-2015, c++14, cuda 10.1, llvm 6.0.1, tvm v7


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