JUPITER by Forschungszentrum Jülich: status and timeline

JUPITER

Europe's first exascale supercomputer reaching 1 exaflop in double precision. Hybrid GPU-CPU design with 15 MW power from renewables.

DeployStage 4 of 5

Inaugurated September 2025; operational worldwide supercomputing resource. 5th on TOP500 list as of June 2026.

Updated Jun 2026Checked 10 Oct0 updates this week

Milestones

Next · Deployment of scientific applications

JEDI development module installedApr 2024Complete.
JETI development module installed2024Complete.
Full system reaches 1 ExaFLOP/sJun 2025Complete.
JUPITER officially inaugurated5 Sep 2025Complete.
Deployment of scientific applicationsTarget 2026Current milestone.

Most important updates

Upcoming

2026Deployment of scientific applications (next)
2026Climate and materials simulation campaigns

Current obstacles

Heterogeneous computing complexityBalancing workload distribution between GPU and CPU modules while maintaining efficiency requires sophisticated scheduling and programming frameworks.
Software ecosystem maturityScientific software must be ported and optimized for the hybrid architecture to fully utilize JUPITER's capabilities.

Physics limits

Electrical grid and cooling constraintsA 15 MW system requires significant infrastructure. Scaling beyond current performance levels faces physical limits in power supply and cooling distribution.
Memory bandwidth limitationsEven with modern interconnects, moving data between processor modules and memory remains a bottleneck for memory-intensive workloads.

How it works

3 parts

Booster Module

GPU acceleration for AI and analytics

~6,000 nodes with NVIDIA GH200 superchips for machine learning, deep learning, and analytics.

Cluster Module

Traditional HPC for simulations

1,300+ nodes with SiPearl Rhea processors for numerical simulations and scientific computing.

Energy Efficiency

Renewable power and heat capture

15 MW from renewables; waste heat recovered for district heating across the Forschungszentrum.

Spec sheet

Spec	JUPITER
Peak performance (FP64)	1 exaflop/s^R (reported)
AI capability (mixed precision)	40-90 exaflops^R (reported)
GPU booster nodes	~6,000^R (reported)
NVIDIA GH200 superchips	~24,000^R (reported)
Power consumption	15 MW^R (reported)
TOP500 global rank (June 2026)	5th overall^R (reported)

^R reported by the company

Update log

2 updates

Jun 2026

Minor: JUPITER maintains position as world's fifth-fastest supercomputer on TOP500 booster module rankingPressTest

Jun 2025

Major: JUPITER supercomputer reaches full exascale performance of 1 quintillion floating-point operations per secondPressHardware

About Forschungszentrum Jülich

The team behind JUPITER

Forschungszentrum Jülich

JUPITER exascale supercomputer, HPC, Germany

A member of Germany's Helmholtz Association, Forschungszentrum Jülich operates JUPITER, Europe's first exascale supercomputer. It conducts interdisciplinary research in energy, information, and bioeconomy with 6,800 staff.

JUPITER inaugurated September 2025; Europe's first exascale supercomputer, ranked 5th globally on TOP500 in June 2026.
24,000 NVIDIA GH200 superchips combined with SiPearl Rhea CPUs in hybrid GPU-CPU architecture.
World's most efficient exascale system: 15 MW powered by renewables, waste heat feeds district heating.

fz-juelich.de (opens fz-juelich.de)Company profile →

Founded: 195670 yrs
Headquarters: Germany
Status: Government
Valuation: government
Works in: ComputingAI factories & supercomputers
Coverage: 1 program · 3 updateslatest 1 Jun 2026checked 10 Oct
Partners: EuroHPC Joint Undertaking (opens eurohpc-ju.europa.eu)
Suppliers: NVIDIA (opens nvidia.com)SiPearl (opens sipearl.com)

Spec

JUPITER

Peak performance (FP64)

1 exaflop/s^R (reported)

AI capability (mixed precision)

40-90 exaflops^R (reported)

GPU booster nodes

~6,000^R (reported)

NVIDIA GH200 superchips

~24,000^R (reported)

Power consumption

15 MW^R (reported)

TOP500 global rank (June 2026)

5th overall^R (reported)