Quantum computing holds great potential to accelerate the process of solving complex combinatorial optimization problems. The Distributed Quantum Approximate Optimization Algorithm (DQAOA) addresses high-dimensional, dense problems using current quantum computing techniques and high-performance computing (HPC) systems. In this work, we improve the scalability and efficiency of DQAOA through advanced problem decomposition and parallel execution using message passing on the Frontier CPU/GPU supercomputer. Our approach ensures efficient quantum-classical workload management by distributing large problem instances across classical and quantum resources. Experimental results demonstrate that enhanced decomposition strategies and GPU-accelerated quantum simulations significantly improve DQAOA's performance, achieving up to 10x speedup over CPU-based simulations. This advancement enables better scalability for large problem instances, supporting the practical deployment of GPU systems for hybrid quantum-classical applications. We also highlight ongoing integration efforts using the Quantum Framework (QFw) to support future HPC-quantum computing systems.
@article{arxiv.2506.10531,
title = {GPU-Accelerated Distributed QAOA on Large-scale HPC Ecosystems},
author = {Zhihao Xu and Srikar Chundury and Seongmin Kim and Amir Shehata and Xinyi Li and Ang Li and Tengfei Luo and Frank Mueller and In-Saeng Suh},
journal= {arXiv preprint arXiv:2506.10531},
year = {2025}
}