Errors in Tutorial Compile PyTorch Models

Troubleshooting
#1

I have recently installed TVM from git (July 2020) in Ubuntu 18.04 with LLVM 6.0.0, cmake 3.10.2, python 3.6.9. And I am getting the following errors when trying to execute the Tutorial on Compile PyTorch Models:

  1. From he code without any modification:

File "from_pytorch.py", line 113, in <module>

m = graph_runtime.GraphModule(lib['default'](ctx))

TypeError: tuple indices must be integers or slices, not str

As “lib” is obtained from

with tvm.transform.PassContext(opt_level=3):

lib = relay.build(mod, target=target, target_host=target_host, params=params)

relay.build() returns 3 outputs ( graph_json ( str ), mod ( tvm.Module ), params ( dict ) ). And tvm.contrib.graph_runtime. GraphModule() expect as input module ( tvm.runtime.Module ). I tried to replace the line obtaining “lib” by:

graph_json, libmod, params = relay.build(mod, target=target, target_host=target_host, params=params)

And using “libmod” instead of “lib” in the line that generates the error.

  1. It generates the following error:

AttributeError: Module has no function 'default'

  1. By removing the ['default']:

m = graph_runtime.GraphModule(libmod(ctx))

TVMError: Check failed: entry_name != nullptr: Symbol __tvm_main__ is not presented

  1. By using the original “lib” and replacing 'default' by 1 inside the brackets I get the same error.

I am out of ideas on how to solve the problem. Does any one knows the source of the error or have any ideas on how to sole or workaround it?

Thanks.

#2

Please install the latest source code of tvm. We have implemented new model based graph runtime recently.

#3

Thanks, I have re-installed TVM and now it is working. Although I got the previous version from a few weeks ago, and before uninstalling it I checked its version “0.7.dev1”. The new one that I have installed today (22 July 2020) it is still the same version “0.7.dev1”.

#4

This changeset is introduced into TVM recent days.

#5

I meet the same problem in window10，and I have re-installed TVM but it isn’t working.Any other reasons in this problem? Thanks.

#6

Update to the github master source code and build, not 0.6 wheel package.

#7

Thank you，I refresh and update my tvm’s environment.After this,it works.Best wishes.