Model Overview
Model Features
Model Capabilities
Use Cases
🚀 Llamacpp imatrix Quantizations of Aura-4B
This project offers Llama.cpp imatrix quantizations of the Aura-4B model. It provides various quantization types to balance between model quality and resource usage, enabling users to run the model efficiently on different hardware.
🚀 Quick Start
- Quantization: We use llama.cpp release b4381 for quantization.
- Original Model: You can access the original model at Aura-4B.
- Running the Model: You can run the quantized models in LM Studio.
✨ Features
- Multiple Quantization Types: Offers a wide range of quantization types, such as f16, Q8_0, Q6_K_L, etc., to meet different performance and quality requirements.
- Optimized Embedding and Output Weights: Some quantizations use Q8_0 for embedding and output weights to improve quality.
- Online Repacking: Supports online repacking of weights for better performance on ARM and AVX machines.
📦 Installation
Installing huggingface-cli
First, ensure you have huggingface-cli
installed:
pip install -U "huggingface_hub[cli]"
Downloading a Specific File
To download a specific file, use the following command:
huggingface-cli download bartowski/Aura-4B-GGUF --include "Aura-4B-Q4_K_M.gguf" --local-dir ./
Downloading Split Files
If the model is split into multiple files (models larger than 50GB), you can download them all to a local folder:
huggingface-cli download bartowski/Aura-4B-GGUF --include "Aura-4B-Q8_0/*" --local-dir ./
💻 Usage Examples
Prompt Format
<|im_start|>system
{system_prompt}<|im_end|>
<|im_start|>user
{prompt}<|im_end|>
<|im_start|>assistant
📚 Documentation
Downloadable Files
Filename | Quant type | File Size | Split | Description |
---|---|---|---|---|
Aura-4B-f16.gguf | f16 | 9.03GB | false | Full F16 weights. |
Aura-4B-Q8_0.gguf | Q8_0 | 4.80GB | false | Extremely high quality, generally unneeded but max available quant. |
Aura-4B-Q6_K_L.gguf | Q6_K_L | 3.90GB | false | Uses Q8_0 for embed and output weights. Very high quality, near perfect, recommended. |
Aura-4B-Q6_K.gguf | Q6_K | 3.71GB | false | Very high quality, near perfect, recommended. |
Aura-4B-Q5_K_L.gguf | Q5_K_L | 3.47GB | false | Uses Q8_0 for embed and output weights. High quality, recommended. |
Aura-4B-Q5_K_M.gguf | Q5_K_M | 3.23GB | false | High quality, recommended. |
Aura-4B-Q5_K_S.gguf | Q5_K_S | 3.16GB | false | High quality, recommended. |
Aura-4B-Q4_K_L.gguf | Q4_K_L | 3.07GB | false | Uses Q8_0 for embed and output weights. Good quality, recommended. |
Aura-4B-Q4_1.gguf | Q4_1 | 2.91GB | false | Legacy format, similar performance to Q4_K_S but with improved tokens/watt on Apple silicon. |
Aura-4B-Q3_K_XL.gguf | Q3_K_XL | 2.81GB | false | Uses Q8_0 for embed and output weights. Lower quality but usable, good for low RAM availability. |
Aura-4B-Q4_K_M.gguf | Q4_K_M | 2.78GB | false | Good quality, default size for most use cases, recommended. |
Aura-4B-Q4_K_S.gguf | Q4_K_S | 2.66GB | false | Slightly lower quality with more space savings, recommended. |
Aura-4B-Q4_0.gguf | Q4_0 | 2.66GB | false | Legacy format, offers online repacking for ARM and AVX CPU inference. |
Aura-4B-IQ4_NL.gguf | IQ4_NL | 2.66GB | false | Similar to IQ4_XS, but slightly larger. Offers online repacking for ARM CPU inference. |
Aura-4B-IQ4_XS.gguf | IQ4_XS | 2.54GB | false | Decent quality, smaller than Q4_K_S with similar performance, recommended. |
Aura-4B-Q3_K_L.gguf | Q3_K_L | 2.46GB | false | Lower quality but usable, good for low RAM availability. |
Aura-4B-Q3_K_M.gguf | Q3_K_M | 2.30GB | false | Low quality. |
Aura-4B-Q2_K_L.gguf | Q2_K_L | 2.22GB | false | Uses Q8_0 for embed and output weights. Very low quality but surprisingly usable. |
Aura-4B-IQ3_M.gguf | IQ3_M | 2.18GB | false | Medium-low quality, new method with decent performance comparable to Q3_K_M. |
Aura-4B-Q3_K_S.gguf | Q3_K_S | 2.10GB | false | Low quality, not recommended. |
Aura-4B-IQ3_XS.gguf | IQ3_XS | 2.03GB | false | Lower quality, new method with decent performance, slightly better than Q3_K_S. |
Aura-4B-Q2_K.gguf | Q2_K | 1.84GB | false | Very low quality but surprisingly usable. |
Aura-4B-IQ2_M.gguf | IQ2_M | 1.72GB | false | Relatively low quality, uses SOTA techniques to be surprisingly usable. |
Embed/Output Weights
Some of these quants (Q3_K_XL, Q4_K_L etc) are the standard quantization method with the embeddings and output weights quantized to Q8_0 instead of what they would normally default to.
ARM/AVX Information
Previously, you would download Q4_0_4_4/4_8/8_8, and these would have their weights interleaved in memory in order to improve performance on ARM and AVX machines by loading up more data in one pass.
Now, however, there is something called "online repacking" for weights. details in this PR. If you use Q4_0 and your hardware would benefit from repacking weights, it will do it automatically on the fly.
As of llama.cpp build b4282 you will not be able to run the Q4_0_X_X files and will instead need to use Q4_0.
Additionally, if you want to get slightly better quality for , you can use IQ4_NL thanks to this PR which will also repack the weights for ARM, though only the 4_4 for now. The loading time may be slower but it will result in an overall speed incrase.
Which File to Choose
Click here for details
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:
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.
🔧 Technical Details
Benchmarks on an AVX2 system (EPYC7702)
Click to view benchmarks
model | size | params | backend | threads | test | t/s | % (vs Q4_0) |
---|---|---|---|---|---|---|---|
qwen2 3B Q4_0 | 1.70 GiB | 3.09 B | CPU | 64 | pp512 | 204.03 ± 1.03 | 100% |
qwen2 3B Q4_0 | 1.70 GiB | 3.09 B | CPU | 64 | pp1024 | 282.92 ± 0.19 | 100% |
qwen2 3B Q4_0 | 1.70 GiB | 3.09 B | CPU | 64 | pp2048 | 259.49 ± 0.44 | 100% |
qwen2 3B Q4_0 | 1.70 GiB | 3.09 B | CPU | 64 | tg128 | 39.12 ± 0.27 | 100% |
qwen2 3B Q4_0 | 1.70 GiB | 3.09 B | CPU | 64 | tg256 | 39.31 ± 0.69 | 100% |
qwen2 3B Q4_0 | 1.70 GiB | 3.09 B | CPU | 64 | tg512 | 40.52 ± 0.03 | 100% |
qwen2 3B Q4_K_M | 1.79 GiB | 3.09 B | CPU | 64 | pp512 | 301.02 ± 1.74 | 147% |
qwen2 3B Q4_K_M | 1.79 GiB | 3.09 B | CPU | 64 | pp1024 | 287.23 ± 0.20 | 101% |
qwen2 3B Q4_K_M | 1.79 GiB | 3.09 B | CPU | 64 | pp2048 | 262.77 ± 1.81 | 101% |
qwen2 3B Q4_K_M | 1.79 GiB | 3.09 B | CPU | 64 | tg128 | 18.80 ± 0.99 | 48% |
qwen2 3B Q4_K_M | 1.79 GiB | 3.09 B | CPU | 64 | tg256 | 24.46 ± 3.04 | 83% |
qwen2 3B Q4_K_M | 1.79 GiB | 3.09 B | CPU | 64 | tg512 | 36.32 ± 3.59 | 90% |
qwen2 3B Q4_0_8_8 | 1.69 GiB | 3.09 B | CPU | 64 | pp512 | 271.71 ± 3.53 | 133% |
qwen2 3B Q4_0_8_8 | 1.69 GiB | 3.09 B | CPU | 64 | pp1024 | 279.86 ± 45.63 | 100% |
qwen2 3B Q4_0_8_8 | 1.69 GiB | 3.09 B | CPU | 64 | pp2048 | 320.77 ± 5.00 | 124% |
qwen2 3B Q4_0_8_8 | 1.69 GiB | 3.09 B | CPU | 64 | tg128 | 43.51 ± 0.05 | 111% |
qwen2 3B Q4_0_8_8 | 1.69 GiB | 3.09 B | CPU | 64 | tg256 | 43.35 ± 0.09 | 110% |
qwen2 3B Q4_0_8_8 | 1.69 GiB | 3.09 B | CPU | 64 | tg512 | 42.60 ± 0.31 | 105% |
Q4_0_8_8 offers a nice bump to prompt processing and a small bump to text generation
📄 License
This project is licensed under the Apache-2.0 License.
Credits
Thank you kalomaze and Dampf for assistance in creating the imatrix calibration dataset.
Thank you ZeroWw for the inspiration to experiment with embed/output.
Want to support my work? Visit my ko-fi page here: https://ko-fi.com/bartowski

