Leonardo

Leonardo node architecture

Leonardo is operated by EuroHPC/CINECA in Italy. This profile covers Ranked system / partition. Specifications are listed below; anything the operator has not published is itemised in the documented-fields list.

Published benchmark (TOP500 · June 2026)

HPL rank

#12

HPL Rmax

241.2 PFlop/s

Theoretical peak Rpeak

306.31 PFlop/s

Ranked core count

1,824,768

Measured power

7494 kW

Energy efficiency

32.19 GFlop/s per watt

Scope and uncertainty

Booster partition only. Leonardo general-purpose CPU partition is excluded.

Documented fields: 20 / 29

Every field this catalog checks. Fields listed above have a value; the remainder are shown here. A field marked absent is not publicly available in the sources we could verify, which does not mean the hardware is missing. Fields that cannot apply, such as benchmark results for an unranked system, are excluded from the total.

Cluster — 7 / 7

• ✓Manufacturer
• ✓Ranked core count
• ✓Theoretical peak (PFlop/s)
• ✓Measured power (kW)
• ✓Energy efficiency (GFlop/s per watt)
• ✓Operating system
• ✓Network topology

Booster — 13 / 22

• ✓System / node model
• ✓Compute nodes of this type
• ✓CPU model
• ✓CPU sockets per node
• ✓Cores per socket
• ✓Physical CPU cores
• ✕CPU note
• ✓Accelerator model
• ✓Physical accelerators per node
• ✓Host / unified memory
• ✓Accelerator memory
• ✓Accelerator ↔ accelerator link
• ✓On-node fabric
• ✕CPU ↔ accelerator link
• ✕Network interfaces per node
• ✕Interface model
• ✕Interface speed
• ✕Interface-to-accelerator topology
• –Aggregate scale-out per node
• ✕GPUDirect RDMA
• ✕Management / storage networking
• ✓Local storage
• –NVMe data disks
• –Max remote data disks
• –Uncached disk IOPS
• –Uncached disk throughput (MBps)
• ✕Form factor

Sources

• TOP500 · June 2026 ranking
• TOP500 · system record
• Operator · node architecture
• TOP500 · Leonardo system record

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