[Beowulf] Virtualisation and high performance interconnects.
hahn at mcmaster.ca
Thu Nov 1 11:15:06 EDT 2007
> However, it does for all non-OS-bypass operations. The most important of
> these is memory registration, because it's not a one-time cost as the Ohio
> State papers have always portrayed it. For applications that do not
it's also worth pointing out that virtualization introduces some
amount of jitter to a parallel application's timing. this will not
matter at all if the app is fairly small and/or loosely-coupled.
but for nontrivial sized jobs that message frequently or in large
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