DeepSeek VL finetune vision encoder?

[SinanAkkoyun]

Hi! Does finetuning deepseek VL also finetune the vision encoder?

[Jintao-Huang]

This model currently only supports fine-tuning of the LLM portion

[wwzhuang01]

hi! is finetuning the aligner of deepseek-vl supported?

[Jintao-Huang]

I am trying to provide support.

[SinanAkkoyun]

@Jintao-Huang Can you please provide pretraining code for the vision encoder, we need to give it new capabilites :)

[Jintao-Huang]

CPT:

NPROC_PER_NODE=4 CUDA_VISIBLE_DEVICES=0,1,2,3 swift sft \
    --model_type deepseek-vl-7b-chat \
    --custom_train_dataset_path xxx.jsonl \
    --custom_val_dataset_path yyy.jsonl \
    --train_dataset_sample -1 \
    --sft_type full \
    --deepspeed default-zero2

[SinanAkkoyun]

Wow! That was super quick, thank you so so much!!! ❤️

[SinanAkkoyun]

In what format must the custom train dataset be? (And what does the val dataset do exactly?)

[soloice]

Bro, you really rock!

[SinanAkkoyun]

{"query": "EEEEE", "response": "FFFFF", "history": [["AAAAA", "BBBBB"], ["CCCCC", "DDDDD"]], "images": ["https://qianwen-res.oss-cn-beijing.aliyuncs.com/Qwen-VL/assets/demo.jpeg", "https://qianwen-res.oss-cn-beijing.aliyuncs.com/Qwen-VL/assets/demo.jpeg", "https://qianwen-res.oss-cn-beijing.aliyuncs.com/Qwen-VL/assets/demo.jpeg"]}

Is that the right format; would I now need to place <image_placeholder> where each image should go? Also, is it possible to make multi-turn with multiple images?

[Jintao-Huang]

Format is similar to this:

[PROMPT]<｜begin▁of▁sentence｜>You are a helpful language and vision assistant. You are able to understand the visual content that the user provides, and assist the user with a variety of tasks using natural language.

User: <image_placeholder>please describe the image.

Assistant:[OUTPUT]A large airplane is suspended from the ceiling.<｜end▁of▁sentence｜>

[Jintao-Huang]

The image will be automatically placed into the image_placeholder to form inputs_embeds. It supports multi-turn conversations with multiple images, but each turn of the conversation can only contain one image.

[SinanAkkoyun]

@Jintao-Huang Thank you so much :)

I don't quite understand these points:

• How would the training jsonl look like exactly?
• How can I use the llava chat format or any other format for that matter (they use that for the deepseek vl chat models)?
• What's the val dataset being used for and is it necessary?

Again thanks for your help!

[Jintao-Huang]

{"query": "55555", "response": "66666", "images": ["image_path"]}
{"query": "eeeee", "response": "fffff", "history": [], "images": ["image_path"]}
{"query": "EEEEE", "response": "FFFFF", "history": [["AAAAA", "BBBBB"], ["CCCCC", "DDDDD"]], "images": ["image_path", "image_path2", "image_path3"]}

https://github.com/modelscope/swift/blob/main/docs/source/Multi-Modal/deepseek-vl%E6%9C%80%E4%BD%B3%E5%AE%9E%E8%B7%B5.md

[Jintao-Huang]

Every multimodal model has its own custom dataset style, and it is demonstrated in best practices. For example, some multimodal models support zero or multiple images in a single conversation, such as qwen-vl. Some multimodal models only allow one image per conversation, like deepseek-vl. And there are multimodal models that require only one image for the entire dialogue, such as cogvlm.

[Jintao-Huang]

The val_dataset is used to evaluate the eval_loss. You can also choose to not provide the custom_val_dataset_path and only pass the custom_train_dataset_path.

[SinanAkkoyun]

Thank you so so much!!! 🙏❤️

[SinanAkkoyun]

Hey @Jintao-Huang , thank you again for implementing the model, I really appreciate your work!

Upon further testing, I realized that DeepSeek VL supports multi-image prompts. Could you please implement multi-image support for training? I'd love to train the model on some image comparisons

[daihuangyu]

This format seems to only support the training method of images + text. Can it be training with plain text data？

[CudaMem]

@Jintao-Huang 您好！请问deepseek-vl暂时只能微调llm部分，不能训练aligner（connector）部分吗？谢谢🙏

[Jintao-Huang]

@Jintao-Huang 您好！请问deepseek-vl暂时只能微调llm部分，不能训练aligner（connector）部分吗？谢谢🙏

--lora_target_modules设置为ALL就可以了，可以查看最佳实践哈，里面有写的。包括如何进行全参数训练

[SinanAkkoyun]

Thank you so so much! 😊

[SinanAkkoyun]

@Jintao-Huang How much VRAM is needed to finetune the 7b VL model?

# Experimental Environment: A100
# GPU Memory Requirement: 80GB
# Runtime: 2.5 hours
CUDA_VISIBLE_DEVICES=0 \
swift sft \
    --model_type qwen1half-7b-chat \
    --dataset blossom-math-zh \
    --num_train_epochs 5 \
    --sft_type full \
    --output_dir output \
    --eval_steps 500 \

The docs say one needs 80GB for a normal 7b model, however when I try to train on the research rig with an A100 I get an OOM. When trying to split across 4 GPUs (1 A100 and 3 4090s), it does not utilize the A100 and OOMs with the 3 4090s before training can start