Chemical Elements as Tracers of the Evolution of the Cosmos


Viper HPC facility, University of Hull (Hull, United Kingdom)


Viper is based around the Linux operating system and is composed of approximately 5,500 processing cores with the following specialised areas:

  • 180 compute nodes, each with 2x 14-core Broadwell E5-2680v4 processors (2.4 –3.3 GHz), 128 GB DDR4 RAM
  • 4 High memory nodes, each with 4x 10-core Haswell E5-4620v3 processors (2.0 GHz), 1TB DDR4 RAM
  • 4 GPU nodes, each identical to compute nodes with the addition of 4x Nvidia Tesla K40m GPUs per node
  • 2 Visualisations nodes with 2x Nvidia GTX 980TI
  • Intel Omni-Path interconnect (100 Gb/s node-switch and switch-switch)
  • 500 TB parallel file system (BeeGFS)

More than 90% of allocated time in viper is from uses in the UHULL Faculty of Science and Engineering. Much of this is allocated to the UHULL EA Milne Center for Astrophysics, where the bulk of the simulations include cosmological and galactical chemical evolution (GCE), and stellar nucleosynthesis.

Services currently offered

Viper can be used in a number of different ways to perform computational research analysis. Some of these of interest for ChETEC-INFRA are listed below:

  • Parallel (Single node) - This is where a job would run on a single node (i.e. up to 28 cores) using OpenMP, OpenMPI or one of the installed software packages.
  • Parallel (Multiple nodes) - This is where a job needs more cores than provided by a single node (presently 28 cores), again this will use OpenMP , OpenMPI or one of the installed software.
  • High Memory - This is where a job requires a large amount of physical memory (currently 1Tbyte) to run. This would typically be a very large data set, or processing that requires a large memory model to contain intermediate data.

Scientific publications in international reviewed journals supported by simulations done in viper are available at

Until now viper has been used mostly for research applications driven from Hull users. Access to external users is given to long-term visitors and collaborators on a yearly base.

Linked ChETEC institution

Web page

ChETEC contact person

  • Marco Pignatari (