[Fwd: Re: [Beowulf] Cell in HPC]

Mark Hahn hahn at physics.mcmaster.ca
Thu Jun 1 06:07:03 PDT 2006

> > why are these cases not nicely covered by the placement 
> > instructions implemented in mmx and followons?  you can control 
> > how a load or store behaves wrt different levels of cache cache.  
> How do I effectively control placement when I don't know how big my
> cache is?

I guess you mean you don't know because you can't count on getting 
any particular fraction of the shared cache, right?  so just do these
streaming/blocked reads directly into your per-core cache.  no?

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