Error in training opennmt - caffe2_detectron_ops.dll not found

Question

I have torch 1.6 and python 3.8. When training OpenNMT, it throws the following error -

OSError: [WinError 126] The specified module could not be found. Error loading "C:\Users\Girish\AppData\Local\Programs\Python\Python38\lib\sitepackages\torch\lib\caffe2_detectron_ops.dll" or one of its dependencies.

I checked the folder, the file is present there. I have tried uninstalling torch and reinstalling it, but no help.

Any help will be appreciated. thanks

peterjc123, i installed intel-opnmp too, but it made no difference — girishnjha, Aug 29 '20 at 17:35

score 11 · Answer 1 · answered Jan 04 '21 at 16:06

11

https://github.com/pytorch/pytorch/issues/35803#issuecomment-725285085

This answer worked for me.

Just deleting "caffe2_detectron_ops.dll" from the path ("C:\Users\Girish\AppData\Local\Programs\Python\Python38\lib\sitepackages\torch\lib\caffe2_detectron_ops.dll")

answered Jan 04 '21 at 16:06

youngwoon

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Genius! How did you figure this out. Thanks a lot :) – quest Feb 25 '22 at 16:22

score 1 · Answer 2 · answered Sep 14 '21 at 01:34

In my case, after deleting caffe2_detectron_ops.dll, it generated the same error for caffe2_detectron_ops_gpu.dll, caffe2_module_test_dynamic.dll, caffe2_observers.dll and cublas64_11.dll.

So I followed @youngwoon's step, I deleted them all. And everything works fine now.

Honestly, this has a root cause and should be explained. But unfortunately, I can't.

score 0 · Answer 3 · answered Nov 12 '20 at 16:56

0

Try this, pip install intel-openmp.

It worked for me

answered Nov 12 '20 at 16:56

sushmitha

11

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Hi Sushmitha. The creator of this question has specifically stated that they have tried to install this package and it did not work. – jeeves Nov 12 '20 at 19:36

score 0 · Answer 4 · answered May 02 '21 at 21:26

You can find missing dependencies with various tools like Dependencies which is a rewrite of old Dependency Walker.

In my case the tool pointed to missing library libiomp5md.dll.

Installing intel-openmp as suggested by user @sushmitha resolved the issue.

score 0 · Answer 5 · answered Jun 24 '21 at 07:56

0

delete caffe2_detectron_ops.dll file from C:\Users\ <your_user_name> \anaconda3\envs\ <your_environment> \Lib\site-packages\torch\lib

answered Jun 24 '21 at 07:56

Ali Kh. Roudbari

1

score 0 · Answer 6 · edited Jan 22 '22 at 18:00

0

Same error to me, but I think that deleting the items just disable the use of GPU use, this is not what I want. I've tried, the error is gone, but the use os GPU too...

import torch
torch.cuda.is_available()

The return is False.

Reinstall torch works to me:

# pip3 install torch==1.10.1+cu113 -f https://download.pytorch.org/whl/cu113/torch_stable.html --user
# pip3 install torchaudio===0.10.1+cu113 -f https://download.pytorch.org/whl/cu113/torch_stable.html --user
# pip3 install torchvision==0.11.2+cu113 torchaudio===0.10.1+cu113 -f https://download.pytorch.org/whl/cu113/torch_stable.html --user

edited Jan 22 '22 at 18:00

ouflak

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10
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answered Jan 22 '22 at 09:17

Marcos Aires

1
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As it’s currently written, your answer is unclear. Please [edit] to add additional details that will help others understand how this addresses the question asked. You can find more information on how to write good answers [in the help center](/help/how-to-answer). – Community Jan 22 '22 at 18:00

Error in training opennmt - caffe2_detectron_ops.dll not found

6 Answers6