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Resolve DDP error by disabling gradients for lm_head #351

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Resolve DDP error by disabling gradients for lm_head #351

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2 changes: 2 additions & 0 deletions gr00t/model/backbone/eagle_backbone.py
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Original file line number Diff line number Diff line change
Expand Up @@ -67,6 +67,8 @@ def set_trainable_parameters(self, tune_llm: bool, tune_visual: bool):
self.tune_visual = tune_visual
for p in self.parameters():
p.requires_grad = True
# lm_head does not require gradients, solving the DDP error on multiple GPUs.
self.eagle_model.language_model.lm_head.requires_grad_(False)
if not tune_llm:
self.eagle_model.language_model.requires_grad_(False)
if not tune_visual:
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