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COSMOS Supercomputer

UK National Cosmology Supercomputer, part of DiRAC - UK distributed HPC Facility. Sponsored by DBIS UK, STFC, SGI and Intel

COSMOS is a supercomputing facility dedicated to research in cosmology, astrophysics and particle physics.

It was founded in January 1997 by a consortium of leading UK cosmologists, brought together by Stephen Hawking. It was funded at the time by SGI, Intel, HEFCE and PPARC.

The ninth incarnation of the COSMOS facility arrived at DAMTP on 4th July 2012. It is an Altix UV2000 system from SGI. At the time of writing this system is the largest shared-memory computer in Europe. COSMOS Mk IX features 1856 Intel Xeon E5 processor cores (SandyBridge-EP) with 14.5TB of globally shared memory. It was boosted further in December 2012 with  31 Intel Many Integrated Core (MIC) co-processors, providing a hybrid hierarchical SMP/MIC computing platform.

The system will be used to support research in cosmology, astrophysics and particle physics within the DiRAC distributed HPC Facility, funded by STFC and DBIS UK. All are welcome to apply, with application details available from the DiRAC website:


  • SGI Altix UV2000 (see [1])
  • Cosmos2 - 1536x cores (Intel Xeon E5-4650L).
  • Cosmic - 288x cores (Intel Xeon E5-4650L), 24x Intel Xeon Phi (5110P).
  • Peak theoretical performance of 38.6 Tflops (calculated using [2])
  • 8GB RAM per core
  • Cosmos2 - 12.2TB RAM in total, globally accessible.
  • Cosmic - 2.3TB RAM in total, globally accessible.
  • NUMALink cache-coherent interconnect, all-to-all, MPI offload engine.
  • 230TB High Performance storage with SGI CXFS, up to 6GB/s sustained I/O disk to/from memory
  • 1x login/development/visualisation node, microcosm ( a small SGI Altix UV2000, equipped with NVidia GPUs and 6x Intel Xeon Phi coprocessors)
  • SGI blade with Intel Phi


    How to acknowledge publishing results obtained on COSMOS