OCuLUS (Owl CLUSter)

Start of operation was March, 2013. The GPU nodes have received multiple updates during the operation time, the latest in 2020. Retired in July 2022.

Technical description

Peak performance 200 TFLOPS (CPU) and > 40 TFLOPS (GPU, original setup)
Processor cores 9.920 Intel Xeon "Sandy Bridge" cores 
Total main memory 45 TByte
Cabinets 12 racks - backdoor cooling,
  2 racks - air cooling
Compute nodes (small) 552, each with two Intel Xeon E5-2670, 2.6GHz, 16 cores, 64 GByte main memory
Compute nodes (large)

20, each with two Intel Xeon E5-2670, 2.6GHz, 16 cores, 256 GByte main memory

GPU nodes Type 1

14, each with two Intel Xeon E5-2670, 2.6GHz, 16 cores, 64 GByte main memory, one NVIDIA GeForce GTX 1080 Ti (11 GByte)

GPU nodes Type 2

 2, each with two Intel Xeon E5-2670, 2.6GHz, 16 cores, 64 GByte main memory, two NVIDIA GeForce GTX 1080 Ti (11 GByte)

GPU nodes Type 3

2, each with two Intel Xeon E5-2670, 2.6GHz, 16 cores, 64 GByte main memory,  two NVIDIA GeForce RTX 2080 Ti (11 GByte)

GPU nodes Type 4 7, each with two Intel Xeon E5-2670, 2.6GHz, 16 cores, 64 GByte main memory,  one NVIDIA GeForce RTX 2080 Ti (11 GByte)
GPU nodes Type 5 14, each with two Intel Xeon E5-2670, 2.6GHz, 16 cores, 64 GByte main memory, two NVIDIA Tesla K20 (5 GByte)
GPU nodes Type 6 4, each with one AMD EPYC 7282, 3.2GHz, 16 cores, 128 GByte main memory, two NVIDIA PNY RTX 2080 Ti (11 GByte)
SMP nodes 4, each with four Intel Xeon E5-4650, 2.7GHz, 32 cores, 1 TByte main memory
Interconnect QDR InfiniBand PCIe3, 40 Gbit/s Mellanox
Storage system 500 TByte disk capacity, BeeGFS (7.1.4) with 2 Metadata servers and 7 Storage Servers
Service nodes 6 frontend  and admin nodes


Documentation

For detailed documentation, available file systems and software, please refer to our technical documentation wiki.