In some applications, the overheads associated with the fundamentally two-sided (send and receive) nature of MPI message-passing can adversely affect performance. This is of particular concern for scaling up to extremely large systems. There is a renewed interest in simpler single-sided communications models where data can be written/read directly to/from remote processes.
This two-day course covers two single-sided PGAS libraries: the OpenSHMEM standard http://www.openshmem.org/ on day 1, and the new open-source GASPI library http://www.gaspi.de/ on day 2. Hands-on practical sessions will play a central part in the course, illustrating key issues such as the need for appropriate synchronisation to ensure program correctness. All the exercises can be undertaken using C or Fortran. The OpenSHMEM material will be delivered by the ARCHER CSE team; the GASPI material will be delivered by Christian Simmendinger (T-Systems Solutions for Research). ”
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