NWQSim: Scalable Simulation of Quantum Circuit with Noise on Heterogeneous HPC Systems

Oct 17, 2021, 2:15 PM


Ang Li (Pacific Northwest National Laboratory, USA)


Despite fascinating developments in NISQ based quantum computing recently, simulations of quantum programs in classical HPC systems are still essential in validating quantum algorithms, understanding the noise effect, and designing robust quantum algorithms. To allow efficient large-scale noise-enabled simulation on state-of-the-art heterogeneous supercomputers, we developed NWQSim, a quantum circuit simulation environment that provides support for frontends such as Q#, Qiskit, Cirq, OpenQASM, etc., and backends such as X86/Power CPUs, NVIDIA/AMD GPUs, and Xeon-Phis, through state-vector and density matrix. NWQSim can scale out to more than a thousand GPUs/CPUs on ORNL Summit and has been tested on ORNL Spock, ANL Theta and NERSC Cori, achieving 10x over existing approaches. In this talk, I will describe the various techniques that enable high-performance, scalability and portability. Our work has been accepted at SC-20 and SC-21. NWQSim is supported by the U.S. DOE Quantum Science Center (QSC).

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