Hardware Overview¶
Karolina consists of 829 computational nodes of which 720 are universal compute nodes (Cn[001-720]), 72 are NVIDIA A100 accelerated nodes (Acn[01-72]), 1 is a data analytics node (Sdf1), and 36 are cloud partitions (CLn[01-36]). Each node is a powerful x86-64 computer, equipped with 128/768 cores (64-core AMD EPYC™ 7H12 / 64-core AMD EPYC™ 7763 / 24-core Intel Xeon-SC 8268) and at least 256 GB of RAM.
User access to Karolina is provided by four login nodes login[1-4]. The nodes are interlinked through high speed InfiniBand and Ethernet networks.
The Accelerated nodes, Data analytics node, and Cloud nodes are available upon request from a PI. For more information about accessing the nodes, see also the Resources Allocation Policy section.
For more technical information, see the Compute Nodes section.
The parameters are summarized in the following tables:
| In general | |
|---|---|
| Primary purpose | High Performance Computing |
| Architecture of compute nodes | x86-64 |
| Operating system | Linux |
| Compute nodes | |
| Total | 829 |
| Processor cores | 128/768 (2x64 cores/32x24 cores) |
| RAM | min. 256 GB |
| Local disk drive | no |
| Compute network | InfiniBand HDR |
| Universal compute node | 720, Cn[001-720] |
| Accelerated compute nodes | 72, Acn[01-72] |
| Data analytics compute nodes | 1, Sdf1 |
| Cloud compute nodes | 36, CLn[01-36] |
| In total | |
| Total theoretical peak performance (Rpeak) | 15.7 PFLOP/s |
| Total amount of RAM | 313 TB |
| Node | Processor | Memory | Accelerator |
|---|---|---|---|
| Universal compute node | 2 x AMD Zen 2 EPYC™ 7H12, 2.6 GHz | 256 GB | - |
| Accelerated compute node | 2 x AMD Zen 3 EPYC™ 7763, 2.45 GHz | 1024 GB | 8 x NVIDIA A100 (40 GB HBM2) |
| Data analytics node | 32 x Intel Xeon-SC 8268, 2.9 GHz | 24 TB | - |
| Cloud compute node | 2 x AMD Zen 2 EPYC™ 7H12, 2.6 GHz | 256 GB | - |