fuyu

Fuyu

In this directory, you will find examples on how you could apply BigDL-LLM INT4 optimizations on Fuyu models. For illustration purposes, we utilize the adept/fuyu-8b as a reference Fuyu model.

Requirements

To run these examples with BigDL-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 an Fuyu model to predict the next N tokens using generate() API, with BigDL-LLM INT4 optimizations.

1. Install

We suggest using conda to manage the Python environment. For more information about conda installation, please refer to here.

After installing conda, create a Python environment for BigDL-LLM:

conda create -n llm python=3.9 # recommend to use Python 3.9
conda activate llm

pip install --pre --upgrade bigdl-llm[all] # install the latest bigdl-llm nightly build with 'all' option

pip install transformers==4.35 pillow # additional package required for Fuyu to conduct generation

2. Run

After setting up the Python environment, you could run the example by following steps.

Note: When loading the model in 4-bit, BigDL-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 Fuyu model based on the capabilities of your machine.

2.1 Client

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

python ./generate.py --image-path demo.jpg

More information about arguments can be found in Arguments Info section. The expected output can be found in Sample Output section.

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 BigDL-Nano env variables
source bigdl-nano-init

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

More information about arguments can be found in Arguments Info section. The expected output can be found in Sample Output section.

2.3 Arguments Info

In the example, several arguments can be passed to satisfy your requirements:

• --repo-id-or-model-path REPO_ID_OR_MODEL_PATH: argument defining the huggingface repo id for the Fuyu model (e.g. adept/fuyu-8b) to be downloaded, or the path to the huggingface checkpoint folder. It is default to be 'adept/fuyu-8b'.
• --prompt PROMPT: argument defining the prompt to be inferred (with the image for chat). It is default to be 'Generate a coco-style caption.'.
• --image-path IMAGE_PATH: argument defining the input image that the chat will focus on. It is required and should be a local path (not url).
• --n-predict N_PREDICT: argument defining the max number of tokens to predict. It is default to be 512.

2.4 Sample Output

adept/fuyu-8b

Inference time: xxxx s
-------------------- Prompt --------------------
Generate a coco-style caption.
-------------------- Output --------------------
An orange bus parked on the side of a road.

The sample input image is (which is fetched from COCO dataset):

demo.jpg