HLRE: Compute Server
The HLRE compute server consists of 24 NEC SX-6 nodes. Each node has the following specifications:
| CPUs | 8 |
| Clock rate of Memory and CPU (MHz) | 500 |
| Vector pipelines per CPU | 8 |
| Vector function units | add/shift, multiply, divide, logical |
| Vector registers per Pipeline | 72 |
| Vector register capacity (words) | 256 |
| GFLOP/s per CPU | 8 |
| Memory (GB) | 64 |
| Total memory bandwidth (GB/s) | 256 |
| Memory bandwidth per CPU (GB/s) | 32 |
Our 24 nodes are connected via the Inter-node Crossbar Switch (IXS). The IXS switches links of 8 GB/s each between arbitrary nodes.
Floating point performance of the whole system in GFLOP/s:
| Peak (Rpeak) | 1536 |
| LINPACK Rmax | 1484 |
| Sustained performance with typical climate codes provided by DKRZ users | ca. 500 |