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Derek Groen

  1. High Performance Gravitational N-body Simulations on a Planet-wide Distributed Supercomputer.

    Ср, 01/05/2011 - 16:01 — SomNambul
    Authors: Derek Groen, Simon Portegies Zwart, Tomoaki Ishiyama, Junichiro Makino
    Subjects: and Cluster Computing, Distributed, Parallel
    Abstract

    We report on the performance of our cold-dark matter cosmological N-body
    simulation which was carried out concurrently using supercomputers across the
    globe. We ran simulations on 60 to 750 cores distributed over a variety of
    supercomputers in Amsterdam (the Netherlands, Europe), in Tokyo (Japan, Asia),
    Edinburgh (UK, Europe) and Espoo (Finland, Europe). Regardless the network
    latency of 0.32 seconds and the communication over 30.000 km of optical network
    cable we are able to achieve about 87% of the performance compared to an equal
    number of cores on a single supercomputer.

  2. A Light-Weight Communication Library for Distributed Computing.

    Ср, 08/18/2010 - 15:02 — SomNambul
    Authors: Derek Groen, Steven Rieder, Paola Grosso, Cees de Laat, Simon Portegies Zwart
    Subjects: and Cluster Computing, Distributed, Parallel
    Abstract

    We present MPWide, a platform independent communication library for
    performing message passing between computers. Our library allows coupling of
    several local MPI applications through a long distance network and is
    specifically optimized for such communications. The implementation is
    deliberately kept light-weight, platform independent and the library can be
    installed and used without administrative privileges.

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