cohere

CoHere/command-r

In this directory, you will find examples on how you could apply IPEX-LLM INT4 optimizations on cohere models. For illustration purposes, we utilize the CohereForAI/c4ai-command-r-v01 as reference model.

0. Requirements

To run these examples with IPEX-LLM, we have some recommended requirements for your machine, please refer to here for more information.

Example: Predict Tokens using generate() API

In the example generate.py, we show a basic use case for a cohere model to predict the next N tokens using generate() API, with IPEX-LLM INT4 optimizations.

1. Install

We suggest using conda to manage environment:

On Linux:

conda create -n llm python=3.11
conda activate llm

# install ipex-llm with 'all' option
pip install --pre --upgrade ipex-llm[all] --extra-index-url https://download.pytorch.org/whl/cpu
pip install "transformers>=4.40.0"

On Windows:

conda create -n llm python=3.11
conda activate llm

pip install --pre --upgrade ipex-llm[all]
pip install "transformers>=4.40.0"

2. Run

python ./generate.py --repo-id-or-model-path REPO_ID_OR_MODEL_PATH --prompt PROMPT --n-predict N_PREDICT

Arguments info:

• --repo-id-or-model-path REPO_ID_OR_MODEL_PATH: argument defining the huggingface repo id for the cohere model to be downloaded, or the path to the huggingface checkpoint folder. It is default to be 'CohereForAI/c4ai-command-r-v01'.
• --prompt PROMPT: argument defining the prompt to be infered (with integrated prompt format for chat). It is default to be 'What is AI?'.
• --n-predict N_PREDICT: argument defining the max number of tokens to predict. It is default to be 32.

Note: When loading the model in 4-bit, IPEX-LLM converts linear layers in the model into INT4 format. In theory, a XB model saved in 16-bit will requires approximately 2X GB of memory for loading, and ~0.5X GB memory for further inference.

Please select the appropriate size of the cohere model based on the capabilities of your machine.

2.1 Client

On client Windows machine, it is recommended to run directly with full utilization of all cores:

python ./generate.py 

2.2 Server

For optimal performance on server, it is recommended to set several environment variables (refer to here for more information), and run the example with all the physical cores of a single socket.

E.g. on Linux,

# set IPEX-LLM env variables
source ipex-llm-init -t

# e.g. for a server with 48 cores per socket
export OMP_NUM_THREADS=48
numactl -C 0-47 -m 0 python ./generate.py

2.3 Sample Output

CohereForAI/c4ai-command-r-v01

Inference time: xxxxx s
-------------------- Prompt --------------------

<BOS_TOKEN><|START_OF_TURN_TOKEN|><|USER_TOKEN|>What is AI?<|END_OF_TURN_TOKEN|><|START_OF_TURN_TOKEN|><|CHATBOT_TOKEN|>

-------------------- Output --------------------

<|START_OF_TURN_TOKEN|><|USER_TOKEN|>What is AI?<|START_OF_TURN_TOKEN|><|CHATBOT_TOKEN|>
Artificial Intelligence, or AI, is a fascinating field of study that aims to create intelligent machines that can mimic human cognitive functions and perform complex tasks. AI strives to