Discovery 6 node architecture
Discovery 6 is operated by ExxonMobil in United States. 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
- #17
- HPL Rmax
- 164.2 PFlop/s
- Theoretical peak Rpeak
- 218.44 PFlop/s
- Ranked core count
- 806,208
Cluster · HPE Cray EX254n · public profile
- Operator / site
- ExxonMobil
- Country
- United States
- Profile scope
- Ranked system / partition
- Data checked
- 14 September 2026
- Manufacturer
- HPE
- Ranked core count
- 806208
- Theoretical peak (PFlop/s)
- 218.44
- Operating system
- HPE Cray OS
HPE Cray EX254n · public profile
Items marked ▧ come from the documented NVIDIA GH200 Grace Hopper Superchip platform specification.
- System / node model
- HPE Cray EX254n
- CPU model
- NVIDIA Grace 72C 3.1GHz
- Cores per socket
- 72
- Accelerator model
- NVIDIA GH200 Superchip
- CPU ↔ accelerator link
- NVLink-C2C · 900 GB/s coherent CPU ↔ GPU
- Form factor
- HPE Cray Supercomputing EX4000 · 100 per cent direct liquid cooling
Scope and uncertainty
ExxonMobil's corporate page, HPE's newsroom post and the wire coverage all reproduce the same single sentence; none adds a node count, a per-node configuration, storage or packaging. ExxonMobil publishes a total of 4,032 NVIDIA Grace Hopper Superchips but no node count and no per-node configuration, so neither is recorded. Node specifications follow the documented NVIDIA GH200 Grace Hopper Superchip platform (Superchip module — nodes per system and per-node superchip counts are operator-specific); operator-specific deviations are not published.
Documented fields: 10 / 27
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 — 4 / 7
- ✓Manufacturer
- ✓Ranked core count
- ✓Theoretical peak (PFlop/s)
- ✕Measured power (kW)
- ✕Energy efficiency (GFlop/s per watt)
- ✓Operating system
- ✕Network topology
HPE Cray EX254n · public profile — 6 / 20
- ✓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
Browse all cluster architecture pages →
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