CLUSTERCluster · GH200 ×4
- Operator / site
- NCSA · University of Illinois
- Country
- United States
- Profile scope
- Documented compute inventory
- Data checked
- 13 September 2026
DeltaAI
NCSA · University of Illinois
CPU Accelerator Interconnect
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DeltaAI node architecture
DeltaAI is operated by NCSA · University of Illinois in United States. This profile covers the documented compute inventory. Specifications are listed below; anything the operator has not published is itemised in the documented-fields list.
GH200 ×4
Items marked ▧ come from the documented NVIDIA GH200 Grace Hopper Superchip platform specification.
- Compute nodes of this type
- 152
- CPU model
- NVIDIA Grace · 72 cores
- CPU sockets per node
- 4
- Cores per socket
- 72
- Physical CPU cores
- 288
- Accelerator model
- NVIDIA Hopper (GH200)
- Physical accelerators per node
- 4
- Host / unified memory
- 480 GB LPDDR5
- Accelerator memory
- 96 GB HBM3 per GPU
- Accelerator ↔ accelerator link
- NVLink · all GPU pairs
- On-node fabric
- NVLink — six bonded links between every GPU pair (NV6 in the operator affinity matrix)
- CPU ↔ accelerator link
- NVLink-C2C
- Network interfaces per node
- 4
- Interface speed
- 200 Gb/s per NIC
- Interface-to-accelerator topology
- A dedicated Slingshot 11 Cassini adapter per Grace-Hopper superchip, four per node
- Local storage
- 3.9 TB local
Scope and uncertainty
152 compute nodes: 132 NSF/NAIRR-funded and 20 Illinois Computes-funded. Four Grace-Hopper superchips per node. 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: 16 / 25
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 — 0 / 3
- Manufacturer
- Ranked core count
- Theoretical peak (PFlop/s)
- Measured power (kW)
- Energy efficiency (GFlop/s per watt)
- Operating system
- Network topology
GH200 ×4 — 16 / 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