[Beowulf] A sea of wimpy cores

Greg Lindahl lindahl at pbm.com
Mon Sep 20 13:58:14 EDT 2010


Because you're trying to figure out how your application scales with
different memory speeds.

On Mon, Sep 20, 2010 at 07:52:25PM +0200, Jonathan Aquilina wrote:
> why would you want to run ram that is slower then the motherboard supports
> anyway? i dont see any advantages of doing that. isnt the whole point to try
> and speed up the calculation process?
> 
> On Mon, Sep 20, 2010 at 7:47 PM, Greg Lindahl <lindahl at pbm.com> wrote:
> 
> > I'm sure that some BIOSes have that kind of feature, but none of the
> > ones that I'm currently using do.
> >
> > On Sun, Sep 19, 2010 at 08:06:39AM +0200, Jonathan Aquilina wrote:
> > > Greg correct me if im wrong but cant you put in the memory which is
> > > compatible with the system and slow the memory bus down via the bios?
> > >
> > >
> > > > * On x86, it's not hard to slow down the memory system by reducing the
> > > > # of channels, putting in slow memory, or adding more devices such
> > > > that the bus slows down. And sometimes it's possible to get the same
> > > > cpu with ddr2 and ddr3.
> > > >
> > > >
> > >
> > > --
> > > Jonathan Aquilina
> >
> 
> 
> 
> -- 
> Jonathan Aquilina
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