A hybrid quantum-classical supercomputer dubbed Roquo has been installed at the Riken Center for Computational Science (R-CCS) in Kobe, Japan.

Named after Mount Rokko, the system was introduced as part of a JHPC-quantum project and commissioned by the New Energy and Industrial Technology Development Organization (NEDO), Japan’s largest public funding and management organization.

Giga Computing Technology was responsible for the design and manufacture of the compute nodes, while DataDirect Networks provided the high-speed file system. ScaleWorX oversaw the system integration.

Roquo provides 19.8 petaflops of compute performance and is among the first systems globally to adopt Nvidia’s GB200 NVL4, a configuration designed specifically for high-performance computing (HPC) applications.

Comprised of 135 compute nodes, totaling 540 Blackwell GPUs, interconnected by Nvidia Quantum-X800 InfiniBand networking, the supercomputer also contains Nvidia Quantum-X800 InfiniBand and Quantum-X800 switches. Roquo is connected via the SQC Interface to support the development of hybrid HPC-quantum computers, including the country’s most powerful supercomputer, Fugaku.

“The JHPC-quantum project aims to advance hybrid computing technologies that integrate quantum computers with HPC systems,” said Mitsuhisa Sato, director of the R-CCS Quantum-HPC Hybrid Platform Division. “In recent years, the integration of GPU-accelerated computing and AI technologies has attracted significant attention, and the deployment of this new GPU supercomputer comes at a particularly opportune time. We expect that this system will contribute to further advances in quantum-HPC hybrid computing and enable the exploration of new application areas.”