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# 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 (**DAcn1**), 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.
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][5] to Karolina is provided by four login nodes **login[1-4]**. The nodes are interlinked through high speed InfiniBand and Ethernet networks.
......@@ -23,18 +23,18 @@ The parameters are summarized in the following tables:
| Compute network | InfiniBand HDR |
| Universal compute node | 720, Cn[001-720] |
| Accelerated compute nodes | 72, Acn[01-72] |
| Data analytics compute nodes | 1, DAcn1 |
| Data analytics compute nodes | 1, Sdf1 |
| Cloud compute nodes | 36, CLn[01-36] |
| **In total** | |
| Total theoretical peak performance (Rpeak) | 15.2 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 2 EPYC™ 7763, 2.45 GHz | 1024 GB | NVIDIA A100 |
| 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 | - |
| 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 2 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 | - |
[1]: compute-nodes.md
[2]: ../general/resources-allocation-policy.md
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