[Beowulf] G5 cluster for testing

Patrick patricka at its.uct.ac.za
Wed Feb 25 09:01:49 EST 2004


Has anyone here actually tried out Xgrid ? Apples grid stuff. It seems to be
not so fussy in regards to the type of macs you attach and suchlike ? as
well as them being configurable via Zeroconf.

P
----- Original Message ----- 
From: "Bill Broadley" <bill at cse.ucdavis.edu>
To: "Orion Poplawski" <orion at cora.nwra.com>
Cc: <beowulf at beowulf.org>
Sent: Wednesday, February 25, 2004 9:10 AM
Subject: Re: [Beowulf] G5 cluster for testing


> On Tue, Feb 24, 2004 at 04:17:31PM -0700, Orion Poplawski wrote:
> > Anyone (vendors?) out there have a G5 cluster available for some
>
> For the most part I'm finding that cluster performance is mostly
> predictable by single node performance, and the scaling of the
> interconnect.  At least as an approximation, I'm going to use to find
> a good place to start for my next couple cluster designs.
>
> I'm current benchmarking:
> Dual G5
> Opteron duals (1.4, 1.8, and 2.2)
> Opteron quad 1.4
> Itanium dual 1.4 GHz
> Dual P4-3.0 GHz+HT
> Single P4-3.0 GHz+HT
>
> Alas, my single node performance testing on the G5 has been foiled by
> my inability to get MPICH, OSX, and ./configure --with-device=ch_shmem
> working.
>
> Anyone else have MPICH and shared memory working on OSX?  Or maybe a dual
> g5 linux account for an evening of benchmarking?
>
> Normally using ch_p4 and localhost wouldn't be to big a deal, but
> ping localhost on OSX is something like 40 times than linux, mpich with
> ch_p4 on OSX is around 20 times worse than linux with shared memory.
>
> > testing?  I've been charged with putting together a small cluster and
> > have been asked to look into G5 systems as well (I guess 64 bit powerPC
> > really....)
>
> Assuming all the applications and tools work under all environments your
> considering I'd figure out what interconnect you want to get first.
>
> -- 
> Bill Broadley
> Computational Science and Engineering
> UC Davis
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