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Update GPTQ-models-(4-bit-mode).md
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In 4-bit mode, models are loaded with just 25% of their regular VRAM usage. So LLaMA-7B fits into a 6GB GPU, and LLaMA-30B fits into a 24GB GPU.
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GPTQ is a clever quantization algorithm that lightly reoptimizes the weights during quantization so that the accuracy loss is compensated relative to a round-to-nearest quantization. See the paper for more details: https://arxiv.org/abs/2210.17323
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## AutoGPTQ
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AutoGPTQ is the recommended way to create new quantized models: https://github.com/PanQiWei/AutoGPTQ
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#### Installation
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### Installation
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To load a model quantized with AutoGPTQ in the web UI, manual installation is currently necessary:
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@ -19,7 +16,7 @@ pip install .
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You are going to need to have `nvcc` installed (see the [instructions below](https://github.com/oobabooga/text-generation-webui/blob/main/docs/GPTQ-models-(4-bit-mode).md#step-0-install-nvcc)).
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#### Usage
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### Usage
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Place the output folder generated by AutoGPTQ in your `models/` folder and load it with the `--autogptq` flag:
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@ -29,9 +26,9 @@ python server.py --autogptq --model model_name
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Alternatively, check the `autogptq` box in the "Model" tab of the UI before loading the model.
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#### Offloading
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### Offloading
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In order to do CPU offloading or multi-cpu inference with AutoGPTQ, use the `--gpu-memory` flag. It is currently somewhat slower than offloading with the `--pre_layer` option in GPTQ-for-LLaMA.
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In order to do CPU offloading or multi-gpu inference with AutoGPTQ, use the `--gpu-memory` flag. It is currently somewhat slower than offloading with the `--pre_layer` option in GPTQ-for-LLaMA (more on that below).
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For CPU offloading:
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@ -45,7 +42,7 @@ For multi-GPU:
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python server.py --autogptq --gpu-memory 3000MiB 6000MiB --model model_name
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```
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#### Applying LoRAs
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### Using LoRAs with AutoGPTQ
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Not supported yet.
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@ -63,7 +60,11 @@ Different branches of GPTQ-for-LLaMa are currently available, including:
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Overall, I recommend using the old CUDA branch. It is included by default in the one-click-installer for this web UI.
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### Installation
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### Installation using precompiled wheels
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https://github.com/jllllll/GPTQ-for-LLaMa-Wheels
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### Manual installation
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#### Step 0: install nvcc
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@ -158,18 +159,11 @@ You can also use multiple GPUs with `pre_layer` if using the oobabooga fork of G
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### Using LoRAs with GPTQ-for-LLaMa
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At the moment, this feature is not officially supported by the relevant libraries, but a patch exists and is supported by this web UI: https://github.com/johnsmith0031/alpaca_lora_4bit
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This requires using a monkey patch that is supported by this web UI: https://github.com/johnsmith0031/alpaca_lora_4bit
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In order to use it:
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To use it:
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1. Make sure that your requirements are up to date:
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```
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cd text-generation-webui
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pip install -r requirements.txt --upgrade
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```
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2. Clone `johnsmith0031/alpaca_lora_4bit` into the repositories folder:
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1. Clone `johnsmith0031/alpaca_lora_4bit` into the repositories folder:
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```
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cd text-generation-webui/repositories
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@ -178,13 +172,13 @@ git clone https://github.com/johnsmith0031/alpaca_lora_4bit
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⚠️ I have tested it with the following commit specifically: `2f704b93c961bf202937b10aac9322b092afdce0`
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3. Install https://github.com/sterlind/GPTQ-for-LLaMa with this command:
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2. Install https://github.com/sterlind/GPTQ-for-LLaMa with this command:
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```
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pip install git+https://github.com/sterlind/GPTQ-for-LLaMa.git@lora_4bit
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```
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4. Start the UI with the `--monkey-patch` flag:
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3. Start the UI with the `--monkey-patch` flag:
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```
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python server.py --model llama-7b-4bit-128g --listen --lora tloen_alpaca-lora-7b --monkey-patch
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