Summary:
Considering that only GPU classic works on Pascal and only if compiled with cuda 11.4, this sets up the conda builds as follows.
tl;dr: Pascal will only be supported by faiss-gpu on cuda 11.
## faiss-gpu
1. build on cuda 11.4.4, supports Pascal, works with pytorch-cuda=11 (including hosts with cuda 12 drivers)
2. build on cuda 12.1.1, does NOT support Pascal, works with pytorch-cuda=12
## faiss-gpu-raft
1. build on cuda 11.8.0, does NOT support Pascal, works with pytorch-cuda=11.8
2. build on cuda 12.1.1, does NOT support Pascal, works with pytorch-cuda=12
The reason faiss-gpu-raft is built with and supports only 11.8 is due to the risk of clobbering otherwise between libraft and pytorch-cuda dependencies.
Pull Request resolved: https://github.com/facebookresearch/faiss/pull/3237
Reviewed By: mdouze
Differential Revision: D53354121
Pulled By: algoriddle
fbshipit-source-id: 86108e975168759572f84922bf0ccef55ae75ef8
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