High-performance Vector-length Agnostic Quantum Circuit Simulations on ARM Processors
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arXiv
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| Format: | Preprint |
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2026
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| author | Shi, Ruimin Schieffer, Gabin Lin, Pei-Hung Gokhale, Maya Herten, Andreas Peng, Ivy |
| author_facet | Shi, Ruimin Schieffer, Gabin Lin, Pei-Hung Gokhale, Maya Herten, Andreas Peng, Ivy |
| contents | ARM SVE and RISC-V RVV are emerging vector architectures in high-end processors that support vectorization of flexible vector length. In this work, we leverage an important workload for quantum computing, quantum state-vector simulations, to understand whether high-performance portability can be achieved in a vector-length agnostic (VLA) design. We propose a VLA design and optimization techniques critical for achieving high performance, including VLEN-adaptive memory layout adjustment, load buffering, fine-grained loop control, and gate fusion-based arithmetic intensity adaptation. We provide an implementation in Google's Qsim and evaluate five quantum circuits of up to 36 qubits on three ARM processors, including NVIDIA Grace, AWS Graviton3, and Fujitsu A64FX. By defining new metrics and PMU events to quantify vectorization activities, we draw generic insights for future VLA designs. Our single-source implementation of VLA quantum simulations achieves up to 4.5x speedup on A64FX, 2.5x speedup on Grace, and 1.5x speedup on Graviton. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_09604 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | High-performance Vector-length Agnostic Quantum Circuit Simulations on ARM Processors Shi, Ruimin Schieffer, Gabin Lin, Pei-Hung Gokhale, Maya Herten, Andreas Peng, Ivy Distributed, Parallel, and Cluster Computing ARM SVE and RISC-V RVV are emerging vector architectures in high-end processors that support vectorization of flexible vector length. In this work, we leverage an important workload for quantum computing, quantum state-vector simulations, to understand whether high-performance portability can be achieved in a vector-length agnostic (VLA) design. We propose a VLA design and optimization techniques critical for achieving high performance, including VLEN-adaptive memory layout adjustment, load buffering, fine-grained loop control, and gate fusion-based arithmetic intensity adaptation. We provide an implementation in Google's Qsim and evaluate five quantum circuits of up to 36 qubits on three ARM processors, including NVIDIA Grace, AWS Graviton3, and Fujitsu A64FX. By defining new metrics and PMU events to quantify vectorization activities, we draw generic insights for future VLA designs. Our single-source implementation of VLA quantum simulations achieves up to 4.5x speedup on A64FX, 2.5x speedup on Grace, and 1.5x speedup on Graviton. |
| title | High-performance Vector-length Agnostic Quantum Circuit Simulations on ARM Processors |
| topic | Distributed, Parallel, and Cluster Computing |
| url | https://arxiv.org/abs/2602.09604 |