Make CogVideoX RoPE implementation consistent#9963
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DN6
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Nov 19, 2024
DN6
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Nov 19, 2024
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Gentle ping to @zRzRzRzRzRzRzR. Maybe @kijai as well to reflect downstream but I'm assuming you've done that already |
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Running slow tests now to confirm all checkpoints still work as expected |
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All outputs are matching for 1.0 and 1.5 implementations, so looks good to merge. Failing test is unrelated |
This was referenced Nov 19, 2024
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sayakpaul
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* update cogvideox rope implementation * apply suggestions from review
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What does this PR do?
CogVideoX 1.5 models use a slightly different RoPE implementation compared to 1.0. When we merged the CogVideoX 1.5 PR, this was the status of RoPE implementations:
All models still worked as expected and there weren't any bugs. This PR just makes sure that 1.5 T2V uses 1.5 RoPE implementation (the reason why it still worked before is because linspace and slice implementation are equivalent at the 1360x768 resolution, which is the only resolution 1.5 T2V supports, but differ otherwise). The 1.5 T2V needs to use sliced implementation though to keep things consistent with the original code base (even though the outputs match with 1.0 implementation).
The config for 1.5 T2V on the official checkpoints has been correctly updated (https://huggingface.co/THUDM/CogVideoX1.5-5B/commit/6b80d8556f820bf58e4e9719ec71450aff55c246), but unless we also make these changes, it will become incompatible. So requesting a speedy merge @DN6