On Apr 7, 2011, at 10:43 AM, Hearns, John wrote: >> >> On 4/6/2011 5:39 PM, Mark Hahn wrote: >> >>> shrug. does anyone have serious experience with real apps on >> manycore >>> machines? (I'm familiar with SGI boxes, where 80 is fairly ho-hum, >>> but they're substantially more exotic/rare/expensive.) >> >> I have a couple 48-core 1U boxes. They can build >> gcc and other large packages very quickly. >> >> The scientists who run single process simulations >> also like them but they're not real picky about >> how long it takes for something to run. They also >> generally spend close to no time at all optimizing >> anything. > > "Premature optimization is the root of all evil" - Donald Knuth > > > I'm also interested in the response to Mark Hahn's question - I guess > that's why I started this thread really! > > Also as I've said before, with the advent of affordable manycore > systems > like this, we're going
> to have to dust off those old skills practised in the age of SMP > monster > machines - which were probably > something like the same specs as these affordable systems! > it's not clear what 'these' refers to. 48 core AMD multicore machine: $8000 on ebay i saw one for. Of course not much of a RAM and not fastest chip. Let's say fully configured about double that price. GPU monster box, which is basically a few videocards inside such a box stacked up a tad, wil only add a couple of thousands. But a 8 socket @ 10 core nehalem-ex, in basic configuration will be already far above $205k. Probably a $300k or so when configured. Huge price difference. So i assume you didn't refer to the Nehalem-ex box. > The contents of this email are confidential and for the exclusive > use of the intended recipient. If you receive this email in error > you should not copy it, retransmit it, use it or disclose its > contents but should return it to the sender immediately and delete > your copy. > _______________________________________________ > Beowulf mailing list, [email protected] sponsored by Penguin > Computing > To change your subscription (digest mode or unsubscribe) visit > http://www.beowulf.org/mailman/listinfo/beowulf _______________________________________________ Beowulf mailing list, [email protected] sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
