[FA-2] Final fix for FA2 dtype
#26846
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ArthurZucker
approved these changes
Oct 17, 2023
Comment on lines
417
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| logger.warning_once( | ||
| "The input hidden states seems to be silently casted in float32, this might be related to" | ||
| " the fact you have upcasted embedding or layer norm layers in float32. We will cast back the input in" | ||
| " float16." | ||
| f"The input hidden states seems to be silently casted in float32, this might be related to" | ||
| f" the fact you have upcasted embedding or layer norm layers in float32. We will cast back the input in" | ||
| f" {target_dtype}." | ||
| ) |
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I think we can remove this now no?
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Hmm I think we need to keep it to inform users about that
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staghado
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Oct 24, 2023
* final fix for FA2 dtype * try * oops * Update src/transformers/models/falcon/modeling_falcon.py Co-authored-by: Arthur <[email protected]> * apply fix everywhere --------- Co-authored-by: Arthur <[email protected]>
EduardoPach
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Nov 19, 2023
* final fix for FA2 dtype * try * oops * Update src/transformers/models/falcon/modeling_falcon.py Co-authored-by: Arthur <[email protected]> * apply fix everywhere --------- Co-authored-by: Arthur <[email protected]>
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What does this PR do?
Replaces #26560
Fixes #26451
Proposes a simpler fix for dealing with FA-2 + PEFT + quantization fine-tuning where users usually cast all other modules (e.g. LayerNorms) in fp32 for training stability.
With #26761 being introduced, it is now much simpler to retrieve model's original dtype, note also that
self.config._pre_quantization_dtyperemains the single source of truth astois not supported for quantized modelscc @ArthurZucker @pacman100
Added also a nice test