DCNv2 can not built on pytorch1.0

See original GitHub issue

    from ._ext import dcn_v2 as _backend
ModuleNotFoundError: No module named 'models.networks.DCNv2._ext'

the DCNv2 can not be built on pytorch 1.0.

Traceback (most recent call last):
  File "build.py", line 3, in <module>
    from torch.utils.ffi import create_extension
  File "/usr/local/lib/python3.6/dist-packages/torch/utils/ffi/__init__.py", line 1, in <module>
    raise ImportError("torch.utils.ffi is deprecated. Please use cpp extensions instead.")
ImportError: torch.utils.ffi is deprecated. Please use cpp extensions instead.

Any fix on this?

Issue Analytics

State:
Created 4 years ago
Reactions:1
Comments:10 (2 by maintainers)

Top GitHub Comments

5reactions

xingyizhoucommented, Apr 18, 2019

Hi, Thanks for your interests again. You can check the Pytorch1.0 DCNv2 from the original repo https://github.com/CharlesShang/DCNv2 . Remember also to disable cudnn BN for pytorch 1.0. Our preliminary result on pytorch 1.0 is about 0.4 AP lower than pytorch 0.4.1 (for ctdet_coco_dla_1x). Not sure if this is due to randomness or internal difference between the two versions. Other experiments are not fully tested in pytorch 1.0. You can still test with our pretrained model on pytorch 1.0.

4reactions

xingyizhoucommented, Apr 18, 2019

You can vim ~/anaconda3/lib/python3.6/site-packages/torch/nn/functional.py or vim ~/anaconda3/envs/ENV_NAME/lib/python3.6/site-packages/torch/nn/functional.py (if you use conda environment) And change torch.backend.cudnn.enabled to False in line 1623.

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