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    SubjectRe: [RFC][PATCH] Cross Memory Attach
    On Wed, 15 Sep 2010 10:16:53 +0200
    Ingo Molnar <> wrote:
    > btw., how does OpenMPI signal the target tasks that something
    > happened to their address space - is there some pipe/socket
    > side-channel, or perhaps purely based on flags in the modified memory
    > areas, which are polled?

    The shared memory btl signals through shared memory, though when
    threading is enabled (I think its mostly used with threading support
    disabled) in OpenMPI there is also signalling done through a pipe.



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