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---
license: llama3.1
---
Experimental .GGUF quants for https://huggingface.co/google/gemma-2-9b-it accordingly to LCPP PR
(based on b_3529 and now b_3565 for the newer ones) : https://github.com/ggerganov/llama.cpp/pull/8836
These experimental quant strategies revisiting Ikawrakow's work are displaying a slight decrease of perplexity,
including per bpw (from 10%+ for the lowest quants to 0.x% for the highest ones).
This is significant enough to encourage you folks to test them, and provide feedback if pertinent.
The iMatrix I use is based on Group Merged V3 and enriched with a bit of French,
a bit of Serbian, and a bit of Croatian languages.
ARC and PPL-512 DATA (Get the last data on the main post of the PR thread) :
```
IQ3_XXS
Master
Size : 3.04 GiB (3.25 BPW)
PPL 512 wikitext : 8.4985 +/- 0.05402
PR (so so)
Size : 3.11 GiB (3.32 BPW)
PPL 512 wikitext : 8.3274 +/- 0.05334
IQ3_XS
Master
Size : 3.27 GiB (3.50 BPW)
PPL 512 wikitext : 8.2019 +/- 0.05167
PR (ok)
Size : 3.24 GiB (3.47 BPW)
PPL 512 wikitext : 8.1762 +/- 0.05176
IQ3_S
Master
Size : 3.42 GiB (3.66 BPW)
PPL 512 wikitext : 7.9894 +/- 0.05020
PR (good)
Size : 3.41 GiB (3.64 BPW)
PPL 512 wikitext : 7.9067 +/- 0.05022
IQ3_M
Master
Size : 3.52 GiB (3.76 BPW)
PPL 512 wikitext : 7.9263 +/- 0.04943
PR (good)
Size : 3.49 GiB (3.73 BPW)
PPL 512 wikitext : 7.8704 +/- 0.04951
IQ3_XL
PR (good)
Size : 3.71 GiB (3.97 BPW)
PPL 512 wikitext : 7.7225 +/- 0.04946
IQ3_XXL
PR (good, the benefit seems meager but the token embeddings pushed form IQ3_S to IQ4_XS explains +0.05BPW of it,
and this tensor doesn't run in VRAM but in RAM)
Size : 3.83 GiB (4.09 BPW)
PPL 512 wikitext : 7.6720 +/- 0.04892
IQ3_XXL
PR (good)
Size : 3.97 GiB (4.24 BPW)
PPL 512 wikitext : 7.5920 +/- 0.04839
IQ4_XS
Master
Size : 4.13 GiB (4.42 BPW)
Arc-C 299 49.16387960
Arc-E 570 72.10526316
PPL 512 wikitext : 7.5226 +/- 0.04820
IQ4_XSR
PR (good)
Size : 4.16 GiB (4.45 BPW)
Arc-C 299
Arc-E 570
PPL 512 wikitext : 7.5072 +/- 0.04814
FP16
MASTER : Gemma 2 9b It F16.
Size : 14.96 GiB (16.00 BPW)
Arc-C 299 49.49832776
Arc-E 570 73.85964912
PPL 512 wikitext : 7.3224 +/- 0.04674
``` |