Supercomputer Hazel Hen, a Cray XC40 system, is at the heart of the high performance computing (HPC) system infrastructure at HLRS. With a peak performance of 7.42 Petaflops (quadrillion floating point operations per second), Hazel Hen is one of the most powerful HPC systems in the world (position 19 in the TOP500, November 2017) and is the fastest supercomputer in Germany. Hazel Hen entered operation in October 2015, is based on the Intel® Haswell Processor and the Cray Aries network technologies, and is designed for sustained application performance and high scalability.
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Technical Description
| Peak performance | 7420 TFlops |
| Cabinets | 41 |
| Weight | 41 Cabinets a 1.5 t = 61.5 t |
| Number of compute nodes | 7712 |
| Number of compute cores | per node 2 sockets each with 12 cores (185,088) |
| Number of service nodes | 90 |
| Processor compute nodes | Intel® Xeon® CPU E5-2680 v3 (30M Cache, 2.50 GHz) |
| Memory/node | 128 GB |
| Disk capacity | ~10 PB |
| Node-node interconnect | Aries |
| Special nodes | External Access Nodes, Pre & Postprocessing Nodes, Remote Visualization Nodes |
| Power consumption | ~3200 KW |