ASPIRE 2B (GPU Partition) node architecture
ASPIRE 2B (GPU Partition) is operated by National Supercomputing Centre Singapore in Singapore. 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
- #44
- HPL Rmax
- 66.4 PFlop/s
- Theoretical peak Rpeak
- 105.98 PFlop/s
- Ranked core count
- 239,616
- Measured power
- 1658 kW
- Energy efficiency
- 40.05 GFlop/s per watt
Cluster · HPE ProLiant Compute XD685 · public profile
- Operator / site
- National Supercomputing Centre Singapore
- Country
- Singapore
- Profile scope
- Ranked system / partition
- Data checked
- 14 September 2026
- Manufacturer
- HPE
- Ranked core count
- 239616
- Theoretical peak (PFlop/s)
- 105.98
- Measured power (kW)
- 1658
- Energy efficiency (GFlop/s per watt)
- 40.04825090470446
- Operating system
- RHEL 9.6
HPE ProLiant Compute XD685 · public profile
Items marked ▧ come from the documented HPE ProLiant Compute XD685 platform specification.
- System / node model
- HPE ProLiant Compute XD685
- CPU model
- AMD EPYC 9655 96C 2.6GHz
- CPU sockets per node
- 2
- Cores per socket
- 96
- Physical CPU cores
- 192
- Accelerator model
- NVIDIA H200 SXM5 141 GB
- Physical accelerators per node
- 8
- Accelerator memory
- 141 GB per accelerator
- Interface speed
- 400 Gb/s Slingshot (operator listing)
- Form factor
- 5U direct-liquid-cooled or 6U air-cooled chassis · 6 × 3000 W Titanium Plus (N+1)
Scope and uncertainty
Partial public profile: processor and fabric follow the TOP500 submission. Node count, socket count, memory and on-node wiring are not assumed from the server model or benchmark core count. This entry describes the ranked system or partition, not every resource operated at this site. Node specifications follow the documented HPE ProLiant Compute XD685 platform (5U direct-liquid-cooled or 6U air-cooled chassis, two sockets, eight accelerators); operator-specific deviations are not published.
Documented fields: 16 / 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 — 6 / 7
- ✓Manufacturer
- ✓Ranked core count
- ✓Theoretical peak (PFlop/s)
- ✓Measured power (kW)
- ✓Energy efficiency (GFlop/s per watt)
- ✓Operating system
- ✕Network topology
HPE ProLiant Compute XD685 · public profile — 10 / 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
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