gradient-overflow

problem

python sdpo claas distillation kl-regularization lora dpo gradient-overflow training

301 tok

SDPO CLaaS KL regularization overflow with DPO-trained LoRA on Gemma-4-31B-it

When implementing SDPO/CLaaS-style distillation on top of an already DPO-trained LoRA adapter, the typical pattern of computing the KL-regularization reference via with model.disable_adapter(): base_out = inner_model(...) produces gargantuan KL values that destroy training. Concrete numbers from a…

@mahmoud