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• Feb-26-24- Arxiv Preprint is released!
• Feb-25-24- Code (Training and Evaluation scripts) is released!
• Feb-25-24- Final pre-trained models (including intermediate checkpoints) and chat version along with online demo links released!

Bigger the better has been the predominant trend in recent Large Language Models (LLMs) development. However, LLMs do not suit well for scenarios that require on-device processing, energy efficiency, low memory footprint, and response efficiency. These requisites are crucial for privacy, security, and sustainable deployment. This paper explores the less is more paradigm by addressing the challenge of designing accurate yet efficient Small Language Models (SLMs) for resource constrained devices. Our primary contribution is the introduction of an accurate and fully transparent open-source 0.5 billion (0.5B) parameter SLM, named MobiLlama, catering to the specific needs of resource-constrained computing with an emphasis on enhanced performance with reduced resource demands. MobiLlama is a SLM design that initiates from a larger model and applies a careful parameter sharing scheme to reduce both the pre-training and the deployment cost.

• Model type: Language model designed using the architecture of LLaMA-7B
• Language(s) (NLP): English
• License: Apache 2.0
• Resources for more information:
  • Training Code
  • Data Preparation
  • Metrics
  • Fully processed Amber pretraining data

from transformers import AutoModelForCausalLM, AutoTokenizer

model = AutoModelForCausalLM.from_pretrained("MBZUAI/MobiLlama-05B", trust_remote_code=True)
tokenizer = AutoTokenizer.from_pretrained("MBZUAI/MobiLlama-05B", trust_remote_code=True)

model.to('cuda')
text = "I was walking towards the river when "
input_ids = tokenizer(text, return_tensors="pt").to('cuda').input_ids
outputs = model.generate(input_ids, max_length=1000, repetition_penalty=1.2, pad_token_id=tokenizer.eos_token_id)
print(tokenizer.batch_decode(outputs[:, input_ids.shape[1]:-1])[0].strip())

model = AutoModelForCausalLM.from_pretrained("MBZUAI/MobiLlama-05B", revision="ckpt_352", trust_remote_code=True)

All the intermediate checkpoints are available from ckpt_100 to ckpt_358.

Download the preprocessed Amber data from huggingface. The entire training data has 360 chunks totalling the size of ~8 TB. Amber dataset contains total 1.2 Trillion tokens with gathered from different data sources shown below.

First install PyTorch according to the instructions specific to your operating system.

To install from source (recommended for training/fine-tuning) run:

conda create -n mobillama python=3.10
conda activate mobillama
git clone https://github.com/mbzuai-oryx/MobiLlama.git
cd MobiLlama
pip install -r  requirements.txt

For MobiLlama (using 20 nodes of A100 80GB GPUS)

sbatch pretrain.sh

For large-base use main_largebase.py in L:11 of pretrain.sh

We used Analysis-360 to evaluate our model on different llm benchmarks.

The table provides a comparative analysis of various models, including our MobiLlama, across several LLM benchmarks. It highlights MobiLlama's superior performance, particularly in its 0.5B and 0.8B configurations, showcasing its efficiency and effectiveness in processing complex language tasks. This comparison underscores MobiLlama's advancements in achieving higher accuracy and demonstrates its potential as a leading solution in the field of LLM.

Comprehensive comparisons with existing < 2B params fully open-source LLM models on 9 benchmarks. Our 1.2B "large-base" model pre-trained on 1.2T tokens achieves superior performance compared to both the recent OLMo 1.17B model and TinyLlama 1.1B model, which are pre-trained on a substantially larger data of 3T tokens.

To run our model on an android app, please download and install the APK from here.

• We thank LLM-360 for fully transparent and open-source implementation of their language model. MobiLlama repo is built using LLM-360.

@misc{thawakar2024mobillama,
      title={MobiLlama: Towards Accurate and Lightweight Fully Transparent GPT}, 
      author={Omkar Thawakar and Ashmal Vayani and Salman Khan and Hisham Cholakkal and Rao Muhammad Anwer and Michael Felsberg and Timothy Baldwin and Eric P. Xing and Fahad Shahbaz Khan},
      year={2024},
      eprint={2402.16840},
      archivePrefix={arXiv},
      primaryClass={cs.CL}
}