[brucethemoose2]

That link above is the fork ^

It uses the ggml library, just like llama.cpp does, and is indeed a fork of llama.cpp's implementation of ggml.

[version_five]

Right, I'm being stupid, that's the fork I saw earlier today I didn't realize. Have you tried it? Iirc the documentation mentioned at 2-bit quantizatikn of the 40B model performing well. I've been using a 5-bit 7B llama2 which I'm generally happy with (because it can run in a pretty crappy machine) but interested to see the differences.

[brucethemoose2]

I wouldn't go lower than Q3_K_S, as its basically the same filesize, and llama 33B has a big perplexity dropoff.