Welcome to H2O LLM Studio, a framework and no-code GUI designed for
fine-tuning state-of-the-art large language models (LLMs).

With H2O LLM Studio, you can

• easily and effectively fine-tune LLMs without the need for any coding experience.
• use a graphic user interface (GUI) specially designed for large language models.
• finetune any LLM using a large variety of hyperparameters.
• use recent finetuning techniques such as Low-Rank Adaptation (LoRA) and 8-bit model training with a low memory footprint.
• use advanced evaluation metrics to judge generated answers by the model.
• track and compare your model performance visually. In addition, Neptune integration can be used.
• chat with your model and get instant feedback on your model performance.
• easily export your model to the Hugging Face Hub and share it with the community.

Quickstart

We offer several ways of getting started quickly.

Using CLI for fine-tuning LLMs:

Setup

H2O LLM Studio requires a machine with Ubuntu 16.04+ and at least one recent Nvidia GPU with Nvidia drivers version >= 470.57.02. For larger models, we recommend at least 24GB of GPU memory.

To get started with H2O LLM Studio, you'll need to install Python 3.10 if you don't have it on your machine already.

System installs (Python 3.10)

sudo add-apt-repository ppa:deadsnakes/ppa
sudo apt install python3.10
sudo apt-get install python3.10-distutils
curl -sS https://bootstrap.pypa.io/get-pip.py | python3.10

Create virtual environment (pipenv)

The following command will create a virtual environment using pipenv and will install the dependencies using pipenv:

make setup

Run H2O LLM Studio GUI

You can start H2O LLM Studio using the following command:

make wave

This command will start the H2O wave server and app. Navigate to http://localhost:10101/ (we recommend using Chrome) to access H2O LLM Studio and start fine-tuning your models!

Run H2O LLM Studio with command line interface (CLI)

You can also use H2O LLM Studio with the command line interface (CLI) and specify the configuration file that contains all the experiment parameters. To finetune using H2O LLM Studio with CLI, activate the pipenv environment by running make shell, and then use the following command:

python train.py -C {path_to_config_file}

To run on multiple GPUs in DDP mode, run the following command:

bash distributed_train.sh {NR_OF_GPUS} -C {path_to_config_file}

By default, the framework will run on the first k GPUs. If you want to specify specific GPUs to run on, use the CUDA_VISIBLE_DEVICES environment variable before the command.

To start an interactive chat with your trained model, use the following command:

python prompt.py -e {experiment_name}

where experiment_name is the output folder of the experiment you want to chat with (see configuration). The interactive chat will also work with model that were finetuned using the UI.

Data Format

H2O LLM studio expects a csv file with at least two columns, one being the instruct column, the other being the answer that the model should generate. You can also provide an extra validation dataframe using the same format or use an automatic train/validation split to evaluate the model performance.

During an experiment you can adapt the data representation with the following settings

• Prompt Column: The column in the dataset containing the user prompt.
• Answer Column: The column in the dataset containing the expected output.
• Text Prompt Start: Text to be added before the user prompt.
• Text Answer Separator: The separator used between the prompt and the answer in the dataset.
• Prepend Column Name: Whether to add the column name to the text input from the left. As an example, if the prompt and answer columns are named "Question" and "Answer" enabling this option would add "Question: " before the question and "Answer: " before the answer.
• Add Eos Token To Answer: Whether to add an explicit end-of-sequence token at the end of the answer.

Example data:

We provide an example dataset (converted dataset from OpenAssistant/oasst1) that can be downloaded here. It is recommended to use train_full.csv for training. This dataset is also downloaded and prepared by default when first starting the GUI.

Training your model

With H2O LLM Studio, training your large language model is easy and intuitive. First, upload your dataset and then start training your model.

Starting an experiment

H2O LLM Studio provides various parameters to set for a given experiment, with some of the most important being:

• LLM Backbone: This parameter determines the LLM architecture to use.
• Mask Prompt Labels: This option controls whether to mask the prompt labels during training and only train on the loss of the answer.
• Hyperparameters such as learning rate, batch size, and number of epochs determine the training process. An overview of all parameters is given in the parameter description.
• Evaluate Before Training This option lets you evaluate the model before training, which can help you judge the quality of the LLM backbone before fine-tuning.

We provide several metric options for evaluating the performance of your model. In addition to the BLEU score, we offer the GPT3.5 and GPT4 metrics that utilize the OpenAI API to determine whether the predicted answer is more favorable than the ground truth answer. To use these metrics, you can either export your OpenAI API key as an environment variable before starting LLM Studio, or you can specify it in the Settings Menu within the UI.

Monitoring the experiment

During the experiment, you can monitor the training progress and model performance in several ways:

• The Charts tab displays train/validation loss, metrics, and learning rate.
• The Train Data Insights tab shows you the first batch of the model to verify that the input data representation is correct.
• The Validation Prediction Insights tab displays model predictions for random/best/worst validation samples. This tab is available after the first validation run.
• Logs and Config show the logs and the configuration of the experiment.
• Chat tab lets you chat with your model and get instant feedback on its performance. This tab becomes available after the training is completed.

Push to Hugging Face 🤗

If you want to publish your model, you can export it with a single click to the Hugging Face Hub and share it with the community. To be able to push your model to the Hub, you need to have an API token with write access.

Compare experiments

In the View Experiments view, you can compare your experiments and see how different model parameters affect the model performance. In addition, you can track your experiments with Neptune by enabling neptune logging when starting an experiment.

Example: Run on OASST data via CLI

As an example, you can run an experiment on the OASST data via CLI.

First, get the data here and place it into the examples/data_oasst1 folder; or download it directly via API command:

kaggle kernels output philippsinger/openassistant-conversations-dataset-oasst1 -p examples/data_oasst1/

First, go into the interactive shell:

make shell

Then, you can run the experiment via:

python train.py -C examples/cfg_example_oasst1.py

After the experiment finishes, you can find all output artifacts in the examples/output_oasst1 folder. You can then use the prompt.py script to chat with your model:

python prompt.py -e examples/output_oasst1

Model checkpoints

All open-source datasets and models are posted on H2O.ai's Hugging Face page.

License

H2O LLM Studio is licensed under the Apache 2.0 license. Please see the LICENSE file for more information.