The Iceberg HPC cluster was retired in November 2019. Key features:
Approx. 3500 CPU cores (mixture of AMD, Intel Ivybridge and Intel Westmere over its lifetime)
260 TB Lustre filesystem
Fast Infiniband interconnects between worker nodes and to/from storage nodes.
16 public GPUS (NVIDIA K40M and NVIDIA M2070 GPUs)
Used the Sun of Grid Engine job scheduler / resource manager (as does the newer ShARC cluster)
Scientific Linux 6 operating system