Re: [Gems-users] Wind Tunnel or GEMS?

[Fengguang Song <song@xxxxxxxxxx>]

Hi Mike,

It is good to know the physical memory can be configured to be 
distributed by Ruby. We may call it a DSM system. By default
Solaris cannot do much about NUMA optimizations unless users
call some specific APIs. Thanks much for your answer!

Best regards,
Fengguang
On Thu, 8 Mar 2007, Mike Marty wrote:

> Ruby can model NUMA timing.  The issue is whether or not your operating
> system can take advantage of it.  For the target we use, Simics thinks
> all the memory is on the same board, so Solaris doesn't do any
> NUMA-aware memory allocation.  You can configure Simics to put memory on
> different boards.  I'm not sure what Solaris will do however.
>
> --Mike
>
> Fengguang Song wrote:
> > Dear GEMS Team,
> >
> > I checked the document of GEMS but was not sure whether
> > GEMS supports DSM or not. All the examples described
> > in the slides are SMP systems. I know Wind Tunnel could
> > do it. But since it is not active any more, I hope to
> > build a system on GEMS. Is it possible to create
> > a NUMA DSM based on GEMS? My work is to build a heterogeneous
> > DSM system (different CPU too).
> >
> > Do you suggest I try Wind Tunnel or GEMS? If GEMS has a
> > different goal from Wind Tunnel, perhaps I should try
> > Wind Tunnel. Any advice is greatly appreciated!
> >
> > Thanks much,
> > Fengguang
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--
Fengguang Song                  Office: 307 Claxton Complex
Department of Computer Science           (865) 974-0517 (O)
University of Tennessee, Knoxville 37996-3450
URL: http://www.cs.utk.edu/~song