[static cache] fix device map per layer in VLMs #38488
Merged
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What does this PR do?
As per title, addresses the issue from #38426 (comment)
After the recent refactor, we don't return language model as
decoderbut only the base model, which contain vision/vq/audio etc encoders. Since generation relies onget_decoder()and since decoder is supposed to be only the LM backbone, this PR returns the correct module as decoder