[Beowulf] SGI to offer Windows on clusters

Peter Kjellstrom cap at nsc.liu.se
Thu Jan 18 08:08:24 PST 2007


On Thursday 18 January 2007 15:17, Richard Walsh wrote:
...
>      While I agree with this argument, especially at small scale, at
> very large scale operating
>      system derived load imbalance (so-called skew, due to the random
> nature of system
>      call driven interrupts) can destroy scalability, and thus
> efficiency.  This is worth mentioning,
>      although I would not expect Windows to improve on Linux in this
> context.  You need
>      a light-weight kernel like Catamount to reduce skew.

Or you could sacrifice some cores and use some kind of cpu isolation strategy. 
This is getting more and more resonable for each new cpu model (you don't 
need to and/or you can't use all cores for your application anyway).

/Peter

...
>      rbw
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