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A minimal implementation of vLLM with PagedAttention and continuous batching.
Pitch

mini-vllm offers a streamlined approach to leveraging vLLM's core concepts, focusing on efficiency and performance with PagedAttention and continuous batching. Ideal for developers looking to optimize their large language model interactions while utilizing the powerful capabilities of CUDA-enabled GPUs.

Description

mini-vllm is a streamlined implementation that encapsulates the fundamental principles of vLLM, focusing on two key innovations: PagedAttention and continuous batching.

Overview

This project enables seamless integration and efficient performance for language model applications utilizing NVIDIA GPUs. By implementing these cutting-edge techniques, mini-vllm significantly enhances the efficiency of token generation compared to traditional methods.

Key Features

  • Efficient Token Generation: Using advanced batching techniques to improve throughput and reduce latency.
  • Easy Integration: Simplifies the process of using large language models through a user-friendly API.

Quick Start

To get started with mini-vllm, only a few lines of code are needed to initiate the model and generate tokens effortlessly. Below is a simple example:

from mini_vllm import LLMEngine

# Initialize the engine
engine = LLMEngine(
    model_name="meta-llama/Llama-3.2-1B",
    block_size=16,
    num_gpu_blocks=100
)

# Add a request
req_id = engine.add_request("The meaning of life is")

# Generate tokens
while True:
    outputs = engine.step()
    if not outputs:
        break
    
    # Check if generation is complete
    if req_id in outputs:
        print(outputs[req_id])

Performance Benchmarks

Tests conducted on an NVIDIA A100 GPU demonstrate the performance capacity of mini-vllm against the standard vLLM implementation. Here are some of the results associated with varying batch sizes:

Batch SizeDurationTotal TokensThroughput
14.59s5010.90 tokens/sec
41.01s250248.48 tokens/sec
161.20s1050872.23 tokens/sec

A comparative analysis reveals that while mini-vllm provides commendable throughput, there is substantial performance from the original vLLM implementation:

Batch Sizemini-vllmvLLMRatio (vLLM/mini)
110.90 tokens/sec213.73 tokens/sec19.6x
4248.48 tokens/sec977.46 tokens/sec3.9x
16872.23 tokens/sec3510.41 tokens/sec4.0x

References

For more insights into the underlying technologies and for further exploration, refer to the following resources:

This project presents a valuable resource for developers working with large language models, particularly those focusing on performance optimization and efficient resource utilization.

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