Versioning Issues¶
Pytorch version¶
This issue is related to https://github.com/pytorch/rl/issues/689. Using PyTorch versions <2.0 and installing stable package leads to undefined symbol errors. For example:
ImportError: /usr/local/lib/python3.7/dist-packages/torchrl/_torchrl.so: undefined symbol: _ZN8pybind116detail11type_casterIN2at6TensorEvE4loadENS_6handleEb
How to reproduce¶
Create an Colab Notebook (at 24/11/2022 Colab enviroment has Python 3.7 and Pytorch 1.12 installed by default).
!pip install torchrl
import torchrl
In Colab you can solve the issue by running:
!pip3 install torch --extra-index-url https://download.pytorch.org/whl/cpu -U
before the !pip install torchrl
command. This will install the latest pytorch. Instructions can be found here.
Workarounds¶
There are two workarounds to this issue
Install/upgrade to the latest pytorch release before installing torchrl.
If you need to use a previous pytorch relase: Install functorch version related to your torch distribution: e.g.
pip install functorch==0.2.0
and install library from sourcepip install git+https://github.com/pytorch/rl@<lib_version_here>
.