The CalcUA infrastructure currently consists of the clusters Leibniz and Vaughan, providing a total of 330 compute nodes which deliver more than 646 teraflop of computing power.

Vaughan

Vaughan was installed in the summer of 2020 and 2021. It is a NEC system consisting of 152 nodes with two 32-core AMD Epyc 7452 generation CPUs connected through an HDR100 InfiniBand network. This cluster also contains 3 nodes for GPU computing (NVIDIA Ampere generation and AMD MI100).

  • 2 login nodes, accessible via login-vaughan.hpc.uantwerpen.be
  • 152 compute nodes for a total of 6656 cores with 256 GB RAM
  • 1 GPU node with four NVIDIA A100 GPUs
  • 2 GPU nodes with two AMD MI100 GPUs
  • InfiniBand HDR100 interconnect

Leibniz

Leibniz was installed in the spring of 2017. It is a NEC system consisting of 152 nodes with dual 14-core Intel E5-2680v4 Broadwell generation CPUs connected through an EDR InfiniBand network. This cluster also contains a node for visualisation, 2 nodes for GPU computing (NVIDIA Pascal generation), one node with dual NEC SX-Aurora TSUBASA vector processors and one node with an Intel Xeon Phi expansion board.

  • 2 login nodes, accessible via login-leibniz.hpc.uantwerpen.be
  • 1 visualization node with a NVIDIA P5000 GPU, accessible via viz1-leibniz.hpc.uantwerpen.be
  • 152 compute nodes for a total of 4256 cores, 144 with 128 GB RAM and 8 with 256 GB RAM
  • 2 GPU nodes with two NVIDIA Tesla P100 GPUs with 16 GB HBM2 memory per GPU
  • 1 node with an Intel Xeon Phi 7220P PCIe card with 16 GB RAM
  • 1 node with a NEC SX-Aurora TSUBASA model A300-2
  • InfiniBand EDR interconnect

24 nodes from the Hopper cluster (2014) were integrated into the Leibniz cluster. These nodes have two 10-core Intel E5-2680v2 Ivybridge generation CPUs with 256 GB RAM, connected through an FDR10 Infiniband network.