h2o-danube2-1.8b-chat-exl2

Original model: h2o-danube2-1.8b-chat
Model creator: H2O.ai

Quants

4bpw h6 (main)
4.25bpw h6
4.65bpw h6
5bpw h6
6bpw h6
8bpw h8

Quantization notes

Made with Exllamav2 0.0.18 with the default dataset.
Additionally I removed quantization metadata from config.json.
Quantization metadata was implemented in newer Exllamav2 versions and causes old TGWUI (older than 31.03.2024) to wrongly set 2k context size for a model instead of 8k.
But without this metadata the model should properly load in both newer and older versions of TGWUI.
After a few test tries I didn't notice issues after removing the metadata and it doesn't seem like TGWUI even uses it for exl2 models.

Notably, this model doesn't seem to work with 4-bit cache but works with default and 8-bit cache.
Old Exllamav2 0.0.15 crashes when loading it with 4-bit cache while 0.0.18 just gets stuck indefinitely without generating anything.

How to run

This quantization method uses GPU and requires Exllamav2 loader which can be found in following applications:

Text Generation Webui

KoboldAI

ExUI

lollms-webui

Original model card

Model Card

Summary

h2o-danube2-1.8b-chat is a chat fine-tuned model by H2O.ai with 1.8 billion parameters. We release three versions of this model:

Model Name	Description
h2oai/h2o-danube2-1.8b-base	Base model
h2oai/h2o-danube2-1.8b-sft	SFT tuned
h2oai/h2o-danube2-1.8b-chat	SFT + DPO tuned

This model was trained using H2O LLM Studio.

Model Architecture

We adjust the Llama 2 architecture for a total of around 1.8b parameters. For details, please refer to our Technical Report. We use the Mistral tokenizer with a vocabulary size of 32,000 and train our model up to a context length of 8,192.

The details of the model architecture are:

Hyperparameter	Value
n_layers	24
n_heads	32
n_query_groups	8
n_embd	2560
vocab size	32000
sequence length	8192

Usage

To use the model with the transformers library on a machine with GPUs, first make sure you have the transformers library installed.

pip install transformers>=4.39.3

import torch
from transformers import pipeline

pipe = pipeline(
    "text-generation",
    model="h2oai/h2o-danube2-1.8b-chat",
    torch_dtype=torch.bfloat16,
    device_map="auto",
)

# We use the HF Tokenizer chat template to format each message
# https://huggingface.co/docs/transformers/main/en/chat_templating
messages = [
    {"role": "user", "content": "Why is drinking water so healthy?"},
]
prompt = pipe.tokenizer.apply_chat_template(
    messages,
    tokenize=False,
    add_generation_prompt=True,
)
res = pipe(
    prompt,
    max_new_tokens=256,
)
print(res[0]["generated_text"])

Quantization and sharding

You can load the models using quantization by specifying load_in_8bit=True or load_in_4bit=True. Also, sharding on multiple GPUs is possible by setting device_map=auto.

Model Architecture

MistralForCausalLM(
  (model): MistralModel(
    (embed_tokens): Embedding(32000, 2560, padding_idx=0)
    (layers): ModuleList(
      (0-23): 24 x MistralDecoderLayer(
        (self_attn): MistralAttention(
          (q_proj): Linear(in_features=2560, out_features=2560, bias=False)
          (k_proj): Linear(in_features=2560, out_features=640, bias=False)
          (v_proj): Linear(in_features=2560, out_features=640, bias=False)
          (o_proj): Linear(in_features=2560, out_features=2560, bias=False)
          (rotary_emb): MistralRotaryEmbedding()
        )
        (mlp): MistralMLP(
          (gate_proj): Linear(in_features=2560, out_features=6912, bias=False)
          (up_proj): Linear(in_features=2560, out_features=6912, bias=False)
          (down_proj): Linear(in_features=6912, out_features=2560, bias=False)
          (act_fn): SiLU()
        )
        (input_layernorm): MistralRMSNorm()
        (post_attention_layernorm): MistralRMSNorm()
      )
    )
    (norm): MistralRMSNorm()
  )
  (lm_head): Linear(in_features=2560, out_features=32000, bias=False)
)

Benchmarks

🤗 Open LLM Leaderboard

Benchmark	acc_n
Average	48.44
ARC-challenge	43.43
Hellaswag	73.54
MMLU	37.77
TruthfulQA	39.96
Winogrande	69.77
GSM8K	26.16

MT-Bench

First Turn: 6.23
Second Turn: 5.34
Average: 5.79

Disclaimer

Please read this disclaimer carefully before using the large language model provided in this repository. Your use of the model signifies your agreement to the following terms and conditions.

• Biases and Offensiveness: The large language model is trained on a diverse range of internet text data, which may contain biased, racist, offensive, or otherwise inappropriate content. By using this model, you acknowledge and accept that the generated content may sometimes exhibit biases or produce content that is offensive or inappropriate. The developers of this repository do not endorse, support, or promote any such content or viewpoints.
• Limitations: The large language model is an AI-based tool and not a human. It may produce incorrect, nonsensical, or irrelevant responses. It is the user's responsibility to critically evaluate the generated content and use it at their discretion.
• Use at Your Own Risk: Users of this large language model must assume full responsibility for any consequences that may arise from their use of the tool. The developers and contributors of this repository shall not be held liable for any damages, losses, or harm resulting from the use or misuse of the provided model.
• Ethical Considerations: Users are encouraged to use the large language model responsibly and ethically. By using this model, you agree not to use it for purposes that promote hate speech, discrimination, harassment, or any form of illegal or harmful activities.
• Reporting Issues: If you encounter any biased, offensive, or otherwise inappropriate content generated by the large language model, please report it to the repository maintainers through the provided channels. Your feedback will help improve the model and mitigate potential issues.
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By using the large language model provided in this repository, you agree to accept and comply with the terms and conditions outlined in this disclaimer. If you do not agree with any part of this disclaimer, you should refrain from using the model and any content generated by it.