| |
|
 |
|
 |
|
|
|
| |
|
|
xen-ia64-devel
RE: [Xen-ia64-devel] SMP-g status.
> -----Original Message-----
> From: Yang, Fred [mailto:fred.yang@xxxxxxxxx]
> Sent: Wednesday, April 26, 2006 3:42 PM
> To: Magenheimer, Dan (HP Labs Fort Collins); Tristan Gingold;
> xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
> Subject: RE: [Xen-ia64-devel] SMP-g status.
>
> >-----Original Message-----
> >From: xen-ia64-devel-bounces@xxxxxxxxxxxxxxxxxxx
> >[mailto:xen-ia64-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf
> >Of Magenheimer, Dan (HP Labs Fort Collins)
> >Sent: Wednesday, April 26, 2006 1:46 PM
> >To: Tristan Gingold; xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
> >Subject: RE: [Xen-ia64-devel] SMP-g status.
> >
> >> From: Tristan Gingold [mailto:Tristan.Gingold@xxxxxxxx]
> >> Sent: Wednesday, April 26, 2006 1:33 AM
> >> To: Magenheimer, Dan (HP Labs Fort Collins);
> >> xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
> >> Subject: Re: [Xen-ia64-devel] SMP-g status.
> >>
> >> Le Mardi 25 Avril 2006 18:43, Magenheimer, Dan (HP Labs Fort
> >> Collins) a écrit
> >> :
> >> > Wow! Amazing work, Tristan!
> >> >
> >> > Is this a 4-socket "future processor" with 2 cores
> >> > and 2 threads on each core?
> >> Yes, 4 montecito with 4 threads.
> >>
> >> > I wonder if the threading
> >> > mechanism on this processor differs sufficiently
> >> > from hyperthreading on x86 that Xen/ia64 might need
> >> > to deal differently with threads?
> >> What do you mean by to deal ?
> >
> >There are many different ways of architecting hyperthreading.
> >Some may be better suited for one software implementation
> >than another. Saying anything further would probably
> >be inappropriate so would have to wait until chips are
> >available publicly.
> >
> Multi-threading shares pipeline and cache within a core.
> Xen/IA64 has separated RID set for each domain, allocating
> new domain base on per core scheduling may be a better
> approach for start
Can I read this as saying that scheduling different domains on
different threads on the same core is probably not a good
idea? Does Xen/x86 do this?
Dan
_______________________________________________
Xen-ia64-devel mailing list
Xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-ia64-devel
|
|
|
| |
|
Home