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patrick-kidger / signatory

Differentiable computations of the signature and logsignature transforms, on both CPU and GPU. (ICLR 2021)
Apache License 2.0
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Error importing signatory on Colab (undefined symbol error) #54

Open ysl23 opened 1 year ago

ysl23 commented 1 year ago

Hi Patrick,

I'm hoping to use Signatory for a Colab script, but I'm not able to import the package after successfully installing it. The below error message shows up when I try to import:

image

I first installed Torch and then installed Signatory that's compatible with the version of Torch, and the installation is as below:

image

I'm not sure whether this would be related - I also installed the RAPIDS package and seems like it would install a version of Torch during the process. I see two different versions of Torch when I check version using .__version and pip show, as below:

image

I'm only able to uninstall the version 1.9.0 (which I installed separately) using pip uninstall, but I can't uninstall the one that's installed during the RAPIDS installation (1.13.1+cu116).

If you have any suggestions on how I can successfully import Signatory on Colab, I'd really appreciate it. Thanks!

patrick-kidger commented 1 year ago

This is probably due to the PyTorch version 1.13. See also the FAQ regarding undefined symbols.

I don't have any suggestions for how to resolve that I'm afraid.

ysl23 commented 1 year ago

I used

git clone https://github.com/patrick-kidger/signatory.git cd signatory python setup.py install

as documented in https://signatory.readthedocs.io/en/latest/pages/usage/installation.html

It fixed the issue!