[Beowulf] cluster softwares supporting parallel CFD computing
Bogdan.Costescu at iwr.uni-heidelberg.de
Wed Sep 6 09:56:00 EDT 2006
On Mon, 4 Sep 2006, Mark Hahn wrote:
> 100 Hz scheduler ticks might make sense
Please don't mention this to beginners (which is the impression that
the original message left me) - if they care enough to search the
information available on the subject they will either make their own
mind or come back here to ask a specific question...
Higher scheduler frequency was demanded, among others, by network
developers who see the backlog run at this frequency - when this is
too low, the network latency in certain situations increases which is
undesired for most cluster applications.
IMHO, low scheduler frequency is probably only good for mostly
computational jobs (f.e. Monte Carlo style) where such latency doesn't
matter and the small amount of time saved due to the lower number of
context switches is used for real computations.
IWR - Interdisziplinaeres Zentrum fuer Wissenschaftliches Rechnen
Universitaet Heidelberg, INF 368, D-69120 Heidelberg, GERMANY
Telephone: +49 6221 54 8869, Telefax: +49 6221 54 8868
E-mail: Bogdan.Costescu at IWR.Uni-Heidelberg.De
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