Re:Show HN: Fine-tune an 8B model on a 4 GB laptop GPU
by ranger_danger on Tuesday August 04, 2026 @09:51AM
(#49169009)
Why is there still a hard VRAM requirement that's dependent on the model size? Isn't that exactly what this project is supposed to solve?
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Re:Show HN: Fine-tune an 8B model on a 4 GB laptop GPU
by MakazhanAlpamys on Tuesday August 04, 2026 @01:42PM
(#49172236)
Because streaming only removes the decoder stack. The embeddings and lm_head stay
resident, that is 2.10 GB of the 3.32 GB peak on 8B. And the logits tensor scales
with batch x seq x vocab, not with depth.
So it goes from "whole model must fit" to "embeddings plus one layer plus logits must fit". That is why 8B works and why I did not try 14B.
The table on the site is the normal resident path, streaming is opt-in and BETA. Should be clearer, my fault.