Tier-1b thin node supercomputer BrENIAC

This system is since October 2016 in production use.


On this cluster you can run highly parallel, large scale computations that rely critically on efficient communication.


  • 580 computing nodes
    • Two 14-core Intel Xeon processors (Broadwell, E5-2680v4)
    • 128 GiB RAM (435 nodes) or 256 GiB (145 nodes)
  • EDR InfiniBand interconnect
    • High bandwidth (11.75 GB/s per direction, per link)
    • Slightly improved latency over FDR
  • Storage system
    • Capacity of 634 TB
    • Peak bandwidth of 20 GB/s

Tier-1a thin node supercomputer Muk

Previous (still operational until 31 December 2016) Tier-1 system is called Muk.

  • 528 computing nodes
    • Two 8-core Intel Xeon processors (Sandy Bridge, E5-2670, 2.6 GHz)
    • 64 GiB RAM
  • FDR InfiniBand interconnect with a fat tree topology
    • High bandwidth (6.5 GB/s per direction, per link)
    • Low latency
  • Storage system
    • Capacity of 400 TB
    • Peak bandwidth of 9.5 GB/s


You will find the standard Linux HPC software stack installed on the Tier-1 cluster. If required, user support will install additional (Linux) software you require, but you are responsible for taking care of the licensing issues (including associated costs).


You can get access to this infrastructure by applying for a starting grant, submitting a project proposal that will be evaluated on scientific and technical merits, or by buying compute time.


  • November 2012: the system was delivered, and a pilot phase started.
  • July 2013: the system Muk was put in production.
  • December 2016: the system Muk will be decommissioned.