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Light-Weight Kernel with Portals

In: High Performance Computing on Vector Systems 2010

Author

Listed:
  • Erich Focht

    (NEC HPC Europe)

  • Jaka Močnik

    (XLAB Research)

  • Fredrik Unger

    (NEC HPC Europe)

  • Andreas Jeutter

    (High Performance Computing Center Stuttgart (HLRS))

  • Marko Novak

    (XLAB Research)

Abstract

With continuously growing numbers of nodes and CPU cores cluster scalability is becoming a more and more significant problem in high performance computing and several approaches are taken to improve it. On the hardware level, operating system level and in the communication model new approaches have been developed. Specialization of cluster nodes, introduction of light-weight kernels and new communication abstraction are all steps to increase the efficiency of compute clusters. Extending the light-weight kernel (LWK), Kitten, with RDMA capable Infiniband network interface support and developing Portals on top of that interface brings improvements to the current compute model. Furthermore, in preparation for running parallel jobs on the light-weight kernel a new Open MPI component was added as an alternative to the currently available OOB/TCP component. This component eliminates the need to have a TCP/IP software stack available on the compute nodes. It is based on the Sandia Portals 3.3 network abstraction and message passing interface.

Suggested Citation

  • Erich Focht & Jaka Močnik & Fredrik Unger & Andreas Jeutter & Marko Novak, 2010. "Light-Weight Kernel with Portals," Springer Books, in: Michael Resch & Katharina Benkert & Xin Wang & Martin Galle & Wolfgang Bez & Hiroaki Kobayashi & Sab (ed.), High Performance Computing on Vector Systems 2010, pages 3-16, Springer.
    • Handle: RePEc:spr:sprchp:978-3-642-11851-7_1
    DOI: 10.1007/978-3-642-11851-7_1
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