kalomaze's LoRA finetuning curves show overfitting typically starts at 3 epochs

kalomaze · x · 2026-10-31

kalomaze shares empirical eval/loss curves for an 8B LoRA finetune: blue is 1 epoch over 90M trainable tokens plus a 1-epoch WSD decay on the best 30M-token subset, red doubles to 2 epochs, yellow runs 3+2, and the green line shows what happened with 3 epochs in both phases — light overfitting. His rule of thumb: overfitting typically starts around 3 passes; the eval set is deliberately mixed-quality for diversity.

Related event: kalomaze's LoRA fine-tuning tests show overfitting begins around epoch 3(3 posts)→

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