[oclug] [OT] supercomputers
willy at debian.org
Sun Nov 16 11:02:40 EST 2003
On Sun, Nov 16, 2003 at 10:49:28AM -0500, Rod Giffin wrote:
> Linux is still well represented: in the top 10, Linux is used at least
> for 3 of the supercomputers at 4th, 6th and 7th. I'm not entirely sure
> what OS is being used by some of the other entries. But look at #14.
> China? Now there's a Great Leap Forward.
5 Pacific Northwest Mpp2 8633
National Laboratory Integrity rx2600 Itanium2 1.5 GHz, 11616
United States/2003 Quadrics / 1936 HP
That one's running Linux (and if it has problems, one of my colleagues
is on the hook to fix it). Ditto #25 and #77 (and I know which Energy
Companies they are, and I'm not saying :-P)
I believe SGI's Altix only runs Linux, so #41, #98, #99 and #100 also
run Linux. I can't be bothered to delve deeper than the top100.
> There is one thing to note though, about the list. The Linux based
> supercomputers tend to use commodity based PC architecture (some are
> based on 64-bit some on 32-bit), and probably cost a lot less to run
> than any of the others in their vicinity on the list. It's one thing to
> be blazingly fast, but quite another to not break the bank doing it.
The thing about clusters is that you start to *really* care about MTBF.
If you have a MTBF of 10 years and 2000 units, you're replacing a unit
every 2 days. Clusters are great, but they're not a panacea. You
also care about power consumption and aircon ;-)
"It's not Hollywood. War is real, war is primarily not about defeat or
victory, it is about death. I've seen thousands and thousands of dead bodies.
Do you think I want to have an academic debate on this subject?" -- Robert Fisk
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