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Llamacpp quants
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license: cc-by-nc-4.0
library_name: transformers
language:
  - en
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quantized_by: bartowski
pipeline_tag: text-generation

Llamacpp Quantizations of c4ai-command-r-plus

Using llama.cpp release b2636 for quantization.

Original model: https://huggingface.co/CohereForAI/c4ai-command-r-plus

Prompt format

<BOS_TOKEN><|START_OF_TURN_TOKEN|><|SYSTEM_TOKEN|>{system_prompt}<|END_OF_TURN_TOKEN|><|START_OF_TURN_TOKEN|><|USER_TOKEN|>{prompt}<|END_OF_TURN_TOKEN|><|START_OF_TURN_TOKEN|><|CHATBOT_TOKEN|><|END_OF_TURN_TOKEN|><|START_OF_TURN_TOKEN|><|CHATBOT_TOKEN|>

Download a file (not the whole branch) from below:

Filename Quant type File Size Description
c4ai-command-r-plus-Q8_0.gguf Q8_0 Extremely high quality, generally unneeded but max available quant.
c4ai-command-r-plus-Q6_K.gguf Q6_K Very high quality, near perfect, recommended.
c4ai-command-r-plus-Q5_K_M.gguf Q5_K_M 73.62GB High quality, recommended.
c4ai-command-r-plus-Q5_K_S.gguf Q5_K_S 71.80GB High quality, recommended.
c4ai-command-r-plus-Q4_K_M.gguf Q4_K_M 62.75GB Good quality, uses about 4.83 bits per weight, recommended.
c4ai-command-r-plus-Q4_K_S.gguf Q4_K_S 59.64GB Slightly lower quality with more space savings, recommended.
c4ai-command-r-plus-IQ4_NL.gguf IQ4_NL 59.73GB Decent quality, slightly smaller than Q4_K_S with similar performance recommended.
c4ai-command-r-plus-IQ4_XS.gguf IQ4_XS 56.72GB Decent quality, smaller than Q4_K_S with similar performance, recommended.
c4ai-command-r-plus-Q3_K_L.gguf Q3_K_L 55.40GB Lower quality but usable, good for low RAM availability.
c4ai-command-r-plus-Q3_K_M.gguf Q3_K_M 50.98GB Even lower quality.
c4ai-command-r-plus-IQ3_M.gguf IQ3_M 47.68GB Medium-low quality, new method with decent performance comparable to Q3_K_M.
c4ai-command-r-plus-IQ3_S.gguf IQ3_S 45.95GB Lower quality, new method with decent performance, recommended over Q3_K_S quant, same size with better performance.
c4ai-command-r-plus-Q3_K_S.gguf Q3_K_S 45.85GB Low quality, not recommended.
c4ai-command-r-plus-IQ3_XS.gguf IQ3_XS 43.59GB Lower quality, new method with decent performance, slightly better than Q3_K_S.
c4ai-command-r-plus-Q2_K.gguf Q2_K 39.49GB Very low quality but surprisingly usable.

Which file should I choose?

A great write up with charts showing various performances is provided by Artefact2 here

The first thing to figure out is how big a model you can run. To do this, you'll need to figure out how much RAM and/or VRAM you have.

If you want your model running as FAST as possible, you'll want to fit the whole thing on your GPU's VRAM. Aim for a quant with a file size 1-2GB smaller than your GPU's total VRAM.

If you want the absolute maximum quality, add both your system RAM and your GPU's VRAM together, then similarly grab a quant with a file size 1-2GB Smaller than that total.

Next, you'll need to decide if you want to use an 'I-quant' or a 'K-quant'.

If you don't want to think too much, grab one of the K-quants. These are in format 'QX_K_X', like Q5_K_M.

If you want to get more into the weeds, you can check out this extremely useful feature chart:

llama.cpp feature matrix

But basically, if you're aiming for below Q4, and you're running cuBLAS (Nvidia) or rocBLAS (AMD), you should look towards the I-quants. These are in format IQX_X, like IQ3_M. These are newer and offer better performance for their size.

These I-quants can also be used on CPU and Apple Metal, but will be slower than their K-quant equivalent, so speed vs performance is a tradeoff you'll have to decide.

The I-quants are not compatible with Vulcan, which is also AMD, so if you have an AMD card double check if you're using the rocBLAS build or the Vulcan build. At the time of writing this, LM Studio has a preview with ROCm support, and other inference engines have specific builds for ROCm.

Want to support my work? Visit my ko-fi page here: https://ko-fi.com/bartowski