The supercomputer Hazel Hen, a Cray XC40 system, is at the heart of HLRS’s high performance computing (HPC) system infrastructure. 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 8 of TOP500, 11/2015), as well as the fastest supercomputer in the European Union. Hazel Hen, which was taken into operation in October 2015, is based on the Intel® Haswell Processor and the Cray Aries network and is designed for sustained application performance and high scalability. Each node is equipped with 2 sockets, each with 12 cores and 128 GB of memory. The system-wide storage capacity is approximately 10 PB.
| Peak performance | 7420 TFlops |
| 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 |
Further information:
Hazelhen system description
Tools and libraries
Access to the system is possible with ssh.
HLRS offers nodes only exclusively, due to security and performance reasons. The minimum accounted resources include 24 cores (one node) and the maximum number of nodes to be requested for a job is 4096.
The Fortissimo project has received funding from the European Union's Seventh Framework Programme for research, technological development and demonstration under grant agreement No 609029. The Fortissimo 2 project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 680481.