[rescue] quad head pci video cards
rdarlington at gmail.com
Mon Jan 26 09:29:12 CST 2009
ccNUMA link cable ;) They sold off CRAY and had to drop the trademarked
On Sun, Jan 25, 2009 at 5:31 PM, Nick B. <nick at pelagiris.org> wrote:
> Uhm, to clear up confusion, O2k/o200/o3k/o300 All use craylink every time
> you go
> between CPU Nodes. I'm not sure about the o3k/o300 pci nodes and such, but
> I would assume they also hook up via CrayLink. I'm told if you ran a cable
> an o2* series to an o3* series it would work electrically, though I suspect
> firmware would shit a brick.
> On Sat, Jan 24, 2009 at 05:24:14PM +0000, Mike Meredith wrote:
> > On Mon, 5 Jan 2009 17:31:55 -0500, Joshua Boyd wrote:
> > > Do you recall, were the moster rack sized CrayLink routers used
> > > at all? Was CrayLink used between racks, or was it strictly HIPPI
> > > between racks? I'm just curious how the really big systems (above 128
> > > CPUs) were built.
> > Just cleaning up my mail folders, and found this which I don't think
> > was answered on list. Just in case ...
> > O2K's _did_ use CrayLinks between racks (at least they did if you
> > wanted multiple racks to look like a single system). In fact I think
> > that the two 8-cpu modules in the rack were also linked with CrayLink
> > cables, but possibly not at the bottom of the rack.
> > Pretty thick dinosaur cable it was too ... I remember it was quite a
> > bit of work getting two racks connected and keeping the cables neat.
> > I think you could get up to 4 racks connected without a router rack (64
> > processors). The published maximum size of an O2K system was 128 cpus,
> > but a number of sites went further by (?) using custom routers.
> > --
> > Mike Meredith (http://zonky.org/)
> > 'I met the well connected, the powerful and the rich; I saw little to
> > envy or, indeed, much to admire;B we were being lionised by a class of
> > society with which we had little in common'B --- Edmund Hillary
> > _______________________________________________
> > rescue list - http://www.sunhelp.org/mailman/listinfo/rescue
> rescue list - http://www.sunhelp.org/mailman/listinfo/rescue
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