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update gc kwargs

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Former-commit-id: 0cb81c156bc8c21a4bbdd3289a491f78dfcaf730
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hiyouga 2024-02-07 00:38:24 +08:00
parent b564b97b7e
commit f67f781fed
1 changed files with 3 additions and 1 deletions
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4
src/llmtuner/model/patcher.py
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@ -227,7 +227,9 @@ def _prepare_model_for_training(
if not getattr(model, "supports_gradient_checkpointing", False): if not getattr(model, "supports_gradient_checkpointing", False):
logger.warning("Current model does not support gradient checkpointing.") logger.warning("Current model does not support gradient checkpointing.")
else: else:
model.gradient_checkpointing_enable(gradient_checkpointing_kwargs={"use_reentrant": False}) # use_reentrant=False might increase VRAM usage (have not been empirically verified yet)
# According to: https://github.com/huggingface/transformers/issues/28339
model.gradient_checkpointing_enable(gradient_checkpointing_kwargs={"use_reentrant": True})
model.enable_input_require_grads() model.enable_input_require_grads()
model.config.use_cache = False # turn off when gradient checkpointing is enabled model.config.use_cache = False # turn off when gradient checkpointing is enabled
logger.info("Gradient checkpointing enabled.") logger.info("Gradient checkpointing enabled.")