Main Page/hybrid prog

This is the document page for hybrid programming plan for NekCEM.

Approaches {some notes taken from DOE Exascale workshop}

• hybrid/evolutionary: MPI+ ___ ?
  • MPI for inter-node prog, since # notes and inter-node concerns not expected to change dramatically
    • support for hybrid programming/interoperability
    • purer one-sided communications; active messages
    • asynchronous collectives
  • something else for intra-node
    1. OpenMP
       • introduction of locality-oriented concepts?
       • efforts in OpenMP 3.0 ?

• • 1. PGAS languages
       • already support a notation of locality in a shared namespace
       • UPC/CAF need to relax strictly SPMD execution model

• • 1. Sequoia
       • support a strong notation of vertical locality

• unified/holistic: __ ?
  • a single notation for inter- and intra-node programming?