CLUSTERCluster · DGX A100 · 40 GB
- Operator / site
- Argonne Leadership Computing Facility
- Country
- United States
- Profile scope
- Documented compute profile
- Data checked
- 14 September 2026
- Network topology
- Fat-tree
Sophia
Argonne Leadership Computing Facility
CPU Accelerator Interconnect
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Sophia node architecture
Sophia is operated by Argonne Leadership Computing Facility in United States. This profile covers Documented compute profile. Specifications are listed below; anything the operator has not published is itemised in the documented-fields list.
DGX A100 · 40 GB
Items marked ▧ come from the documented NVIDIA DGX A100 platform specification.
- System / node model
- NVIDIA DGX A100
- Compute nodes of this type
- 22
- CPU model
- AMD Rome · 64 cores
- CPU sockets per node
- 2
- Cores per socket
- 64
- Physical CPU cores
- 128
- Accelerator model
- NVIDIA A100
- Physical accelerators per node
- 8
- Host / unified memory
- 1 TB DDR4
- Accelerator memory
- 40 GB per GPU
- Accelerator ↔ accelerator link
- NVLink / NVSwitch
- On-node fabric
- NVLink 3 through NVSwitch, 600 GB/s GPU-to-GPU
- CPU ↔ accelerator link
- PCIe 4.0
- Network interfaces per node
- 8
- Interface model
- NVIDIA ConnectX-6 / ConnectX-7 (platform configuration)
- Interface-to-accelerator topology
- One adapter per GPU
- Local storage
- 4 × 3.84 TB NVMe
- Form factor
- 6U rackmount
DGX A100 · 80 GB
Items marked ▧ come from the documented NVIDIA DGX A100 platform specification.
- System / node model
- NVIDIA DGX A100
- Compute nodes of this type
- 2
- CPU model
- AMD Rome · 64 cores
- CPU sockets per node
- 2
- Cores per socket
- 64
- Physical CPU cores
- 128
- Accelerator model
- NVIDIA A100
- Physical accelerators per node
- 8
- Host / unified memory
- 2 TB DDR4
- Accelerator memory
- 80 GB per GPU
- Accelerator ↔ accelerator link
- NVLink / NVSwitch
- On-node fabric
- NVLink 3 through NVSwitch, 600 GB/s GPU-to-GPU
- CPU ↔ accelerator link
- PCIe 4.0
- Network interfaces per node
- 8
- Interface model
- NVIDIA ConnectX-6 / ConnectX-7 (platform configuration)
- Interface-to-accelerator topology
- One adapter per GPU
- Local storage
- 4 × 3.84 TB NVMe
- Form factor
- 6U rackmount
Scope and uncertainty
Twenty-two 320 GB GPU-memory nodes and two 640 GB GPU-memory nodes. Memory capacities are kept separate by node type. Node specifications follow the documented NVIDIA DGX A100 platform (6U rackmount); operator-specific deviations are not published.
Documented fields: 37 / 47
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 — 1 / 3
- Manufacturer
- Ranked core count
- Theoretical peak (PFlop/s)
- Measured power (kW)
- Energy efficiency (GFlop/s per watt)
- Operating system
- Network topology
DGX A100 · 40 GB — 18 / 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
DGX A100 · 80 GB — 18 / 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