All functionality has been consolidated into a single file for CLI/UI/Checkpointing and Added fix for issue 702 and added code for that as well, added instructions in local_inference /README.md as well

[himanshushukla12]

What does this PR do?

This PR adds detailed instructions for using the multi_modal_infer.py script to generate text from images after fine-tuning the Llama 3.2 vision model. The script supports merging PEFT adapter weights from a specified path. The changes include:

• Adding a new section in the

LLM_finetuning_overview.md

file under the "Inference" heading.

• Providing a usage example for running the inference script with the necessary parameters.

Fixes # (issue)

Feature/Issue validation/testing

Please describe the tests that you ran to verify your changes and relevant result summary. Provide instructions so it can be reproduced.
Please also list any relevant details for your test configuration.

• Test A: Verified that the code-merge-inference.py script runs successfully with the provided example command.
  Logs for Test A:

  python multi_modal_infer.py \
      --image_path "path/to/your/image.png" \
      --prompt_text "Your prompt text here" \
      --temperature 1 \
      --top_p 0.5 \
      --model_name "meta-llama/Llama-3.2-11B-Vision-Instruct" \
      --hf_token "your_hugging_face_token" \
      --finetuning_path "path/to/your/finetuned/model"

Output:

Loading checkpoint shards: 100%|██████████████████| 5/5 [00:03<00:00,  1.40it/s]
Loading adapter from 'PATH/to/save/PEFT/model'...
Adapter merged successfully with the pre-trained model.

Before submitting

• This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
• Did you read the contributor guideline, Pull Request section?
• Was this discussed/approved via a Github issue? Please add a link to it if that's the case.
• Did you make sure to update the documentation with your changes?
• Did you write any new necessary tests?

Thanks for contributing 🎉!

[init27]

@himanshushukla12 is our community legend! Thanks for another PR! :)

[himanshushukla12]

@init27 Thank you for the recognition😊

[wukaixingxp]

Thank you so much for another PR that is super helpful for our users to their fine-tuned Lora checkpoints for inference. I noticed that for vision model we are having 2 inference script: multi_modal_infer.py and multi_modal_infer_gradio_UI.py (Thanks to your help!). I wonder if it is better to add the Lora ability on top of them, instead of creating a new script. Having 3 inference scripts for vision model may be a little confusing for new users. Maybe later when I have time, we can work together to also merge all the inference scripts under local_inference into one script that can handle both text model and vision model, and have options for --gradio_ui and --lora_adaptor. Ideally it will be much easier for user to just learn one script that can handle everything. Let me know if you have any suggestion! Thank you again for this great PR.

[himanshushukla12]

@wukaixingxp All changes are successfully implemented and is described below

Model Overview

• Base model: meta-llama/Llama-3.2-11B-Vision-Instruct
• Uses PEFT library (v0.13.1) for efficient fine-tuning
• Supports vision-language tasks with instruction capabilities

Key Features in

multi_modal_infer.py

All functionality has been consolidated into a single file with three main modes:

1. Basic Inference

python multi_modal_infer.py \
    --image_path "path/to/image.jpg" \
    --prompt_text "Describe this image" \
    --model_name "meta-llama/Llama-3.2-11B-Vision-Instruct" \
    --hf_token "your_token"

2. Gradio UI Mode

python multi_modal_infer.py \
    --model_name "meta-llama/Llama-3.2-11B-Vision-Instruct" \
    --hf_token "your_token" \
    --gradio_ui

3. LoRA Fine-tuning Integration

python multi_modal_infer.py \
    --image_path "path/to/image.jpg" \
    --prompt_text "Describe this image" \
    --model_name "meta-llama/Llama-3.2-11B-Vision-Instruct" \
    --hf_token "your_token" \
    --finetuning_path "path/to/lora/weights"

Key Improvements

• Single file implementation instead of multiple scripts
• Dynamic LoRA loading through UI toggle
• Integrated model state management
• Unified command line interface
• Interactive web UI with parameter controls
• Support for both CLI and UI-based workflows

Kindly let me know if there is something left. We can figure it out.

[himanshushukla12]

Test of all the three modes

1. Basic Inference

python multi_modal_infer.py \
    --image_path "path/to/image.jpg" \
    --prompt_text "Describe this image" \
    --model_name "meta-llama/Llama-3.2-11B-Vision-Instruct" \
    --hf_token "your_token"

Loading checkpoint shards: 100%|███████████████████████████████████████████████████████████████████████████████████████████████████████| 5/5 [00:03<00:00,  1.30it/s]
Generated Text: end_header_id|>

The image presents a complex network diagram comprising 10 nodes, each represented by a distinct colored square... (continued)

2. Gradio UI Mode

python multi_modal_infer.py \
    --model_name "meta-llama/Llama-3.2-11B-Vision-Instruct" \
    --hf_token "your_token" \
    --gradio_ui

Output:

Loading checkpoint shards: 100%|███████████████████████████████████████████████████████████████████████████████████████████████████████| 5/5 [00:03<00:00,  1.32it/s]
/home/llama-recipes/venvLlamaRecipes/lib/python3.10/site-packages/gradio/components/chatbot.py:222: UserWarning: You have not specified a value for the `type` parameter. Defaulting to the 'tuples' format for chatbot messages, but this is deprecated and will be removed in a future version of Gradio. Please set type='messages' instead, which uses openai-style 'role' and 'content' keys.
  warnings.warn(
* Running on local URL:  http://127.0.0.1:7860

To create a public link, set `share=True` in `launch()`.

3. LoRA Fine-tuning Integration

python multi_modal_infer.py \
    --image_path "path/to/image.jpg" \
    --prompt_text "Describe this image" \
    --model_name "meta-llama/Llama-3.2-11B-Vision-Instruct" \
    --hf_token "your_token" \
    --finetuning_path "path/to/lora/weights"

Output:

Loading checkpoint shards: 100%|███████████████████████████████████████████████████████████████████████████████████████████████████████| 5/5 [00:03<00:00,  1.31it/s]
Loading adapter from '/home/llama-recipes/PATH2/to/save/PEFT/model/'...
Adapter merged successfully
Generated Text: end_header_id|>

[himanshushukla12]

Thank you so much for another PR that is super helpful for our users to their fine-tuned Lora checkpoints for inference. I noticed that for vision model we are having 2 inference script: multi_modal_infer.py and multi_modal_infer_gradio_UI.py (Thanks to your help!). I wonder if it is better to add the Lora ability on top of them, instead of creating a new script. Having 3 inference scripts for vision model may be a little confusing for new users. Maybe later when I have time, we can work together to also merge all the inference scripts under local_inference into one script that can handle both text model and vision model, and have options for --gradio_ui and --lora_adaptor. Ideally it will be much easier for user to just learn one script that can handle everything. Let me know if you have any suggestion! Thank you again for this great PR.

@wukaixingxp All changes are done, can you please check