RIKEN Launches ROQUO Supercomputer for Quantum-HPC Hybrid Computing

Insider Brief

• RIKEN Center for Computational Science has launched the ROQUO supercomputer to support the integration of quantum computing and high-performance computing through Japan’s Quantum-HPC
• Hybrid Platform. Developed under the JHPC-quantum project, ROQUO achieved 19.80 petaflops in the High Performance LINPACK benchmark during operational testing.
• The system is installed in Kobe and is intended to serve as a long-term research platform for advancing quantum-HPC hybrid computing capabilities.

PRESS RELEASE — The Quantum-HPC Hybrid Platform Division (Director: Mitsuhisa Sato) of the RIKEN Center for Computational Science (hereafter “R-CCS”) has installed a new JHPC-quantum GPU supercomputer, “ROQUO”, at R-CCS in Kobe and has begun its operation, to accelerate the integration of quantum computing and high-performance computing (HPC).

“ROQUO” is a new computing platform for the Quantum-HPC Hybrid Platform, named after Mount Rokko, the mountain that symbolizes Kobe. It was introduced as part of the NEDO-commissioned project “Research and Development of Quantum-Supercomputers Hybrid Platform for Exploration of Uncharted Computable Capabilities” (JHPC-quantum project) [1] and was built primarily by DTS Corporation as the “Supercomputer for the Quantum-HPC Hybrid Platform” announced on November 18, 2025. Construction has now been completed as planned, and the system has reached the stage of operational launch.

In the High Performance LINPACK (HPL) benchmark measurement [2] conducted as part of operational preparations, “ROQUO” achieved 19.80 petaflops (PFLOPS; 1 peta = 10^15) in double-precision floating-point (FP64) operations.

The name derives from Mount Rokko, which symbolizes Kobe, the city where the system is installed. Just as Mount Rokko is rooted in Kobe and has undergone development together with the city at its foot, the name “ROQUO” was chosen with the wish that the system will contribute to society and research over the long term—as a computing platform of R-CCS and as the core of Japan’s Quantum-HPC Hybrid Platform.

The artwork on the doors of the computer racks is designed with motifs of the ridgeline of Mount Rokko and the sea and sky of Port Island, where the system is located. By visually expressing the geographical and cultural identity of Kobe, it symbolizes that this is a research platform rooted in the region.

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