Thanks!
This is the first time I have been able to load a 34b model on my budget 3060! With 12gb of vram, the 2.55 bit variation mostly loads on my GPU, with a little spilling over into the CPU at 2048 context.
Indeed, this is the best AI model I've used so far which also fits on a single 3090. I'm using the 5_0-bpw-h8-evol-ins variant. Thanks from me too.
From what I've seen, I think the quality of 2.55-bit 34b exceeds comparable 6-bit or 8-bit 13b models, but that's just my own subjective opinion. 34b models like this one are usable at 2 bpw, but the replies take a while, so it's probably not the sweet spot for 12 VRAM. It's fun to use on occasion, though, because of the higher quality responses.
For the most part, I'm using 4 bpw 13b models for 4k context, 4.65 bpw 13b models for 3k context, and 3 bpw 20b models for ~2k context.
@latimar , can you or someone else explain why the perplexity scores are worse on the "5_0-bpw-h8-evol-ins" model versus the "5_0-bpw-h8" model?
I would assume fine-tuning the model would improve the scores?
Also, in my personal non scientific test, I give both LLMs a coding challenge, and the "5_0-bpw-h8-evol-ins" model gave a better response than the "5_0-bpw-h8" model. So anecdotally, "5_0-bpw-h8-evol-ins" is a better performing model for me, despite the worse PPL score.
@Hisma 5_0-bpw-h8-evol-ins was converted using different calibration dataset, not wikitext, but evol-instruct. It has worse ppl score on wikitext, yes, but its coding abilities are actually better that 5_0-bpw-h8. The better metric to compare different quants would be HumanEval score, or at least ppl score on evol-instruct dataset.
Got it, thank you. Would have been useful to include the humaneval scores with these models too like you did in your supercoder models. But regardless, I can definitely confirm there is noticeablely better coding performance on 5_0-bpw-h8-evol-ins, so based on what you're saying this all makes sense. Thank you for explaining!