Llama-2-70b-chat-hf-marlin

Llama-2-70b-chat-hf

This repo contains model files for Llama-2-70b-chat-hf optimized for nm-vllm, a high-throughput serving engine for compressed LLMs.

This model was quantized with GPTQ and saved in the Marlin format for efficient 4-bit inference. Marlin is a highly optimized inference kernel for 4 bit models.

Inference

Install nm-vllm for fast inference and low memory-usage:

pip install nm-vllm[sparse]

Run in a Python pipeline for local inference:

from transformers import AutoTokenizer
from vllm import LLM, SamplingParams

model_id = "softmax/Llama-2-70b-chat-hf-marlin"
model = LLM(model_id)

tokenizer = AutoTokenizer.from_pretrained(model_id)
messages = [
    {"role": "user", "content": "What is synthetic data in machine learning?"},
]
formatted_prompt =  tokenizer.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)
sampling_params = SamplingParams(max_tokens=200)
outputs = model.generate(formatted_prompt, sampling_params=sampling_params)
print(outputs[0].outputs[0].text)

"""
  Synthetic data, also known as artificial data or simulated data, is data that is artificially generated using various methods, rather than being collected from real-world sources. Synthetic data can be used to augment or substitute real-world data in machine learning applications, and can be particularly useful when real-world data is limited, expensive, or difficult to obtain.

There are several ways to generate synthetic data, including:

1. Data augmentation: This involves transforming existing data, such as images or time series data, to create new data that can be used to augment a training set. For example, an image recognition model can be trained on a dataset of images that have been rotated, scaled, and flipped to create new images that the model has not seen before.
2. Generative models: These models use algorithms to generate new data that resembles real-world data. Generative adversarial networks (GAN
"""

Quantization

For details on how this model was quantized and converted to marlin format, please refer to this notebook.