articleHuggingFace Blog
Liger GRPO meets TRL
Report on debugging Liger GRPO loss with DeepSpeed ZeRO-3 using Qwen/Qwen2.5-0.5B-Instruct in bf16, highlighting a shape mismatch during training. The traceback traces through grpo_loss and fused_linear_ppo, pointing to a forward pass issue in the Liger kernel. No fix is shown, but it identifies the code paths to inspect (grpo_loss, fused_linear_ppo).
published MAY 25, 2025★★★★★
Read the sourcehuggingface.co/blog/liger-grpo
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- Source
- HuggingFace Blog
- Ingested
- MAY 25, 2025 · 19:10
- Editorial score
- 3.0 / 5