make sure everything stays in the same dtype when using dpo + FSDP #1559
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can confirm, this PR fixes the issue for me. (QLoRA+FSDP Llama-3-70B) |
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trl's DPO Trainer attempts to call prepare_for_kbit_training on the peft model, but this should be avoided when using FSDP, otherwise you end up with the error:
we go behind it after instantiation and fix the dtypes.