Messages in this thread | | | Date | Fri, 4 Dec 1998 12:16:26 +0100 (CET) | From | Torbjorn Lindgren <> | Subject | Re: SMP scalability: 8 -> 32 CPUs |
| |
On Thu, 3 Dec 1998, Jason Riedy wrote: > ASCI Blue Mountain is a cluster of O2000s with 6144 total processors. I > believe it's set up to appear as a cluster of single machine images (1k > processors), each of which is a NUMA, but I don't have access to it to > check. I don't know if the cluster follows the same design as the > individual machines (fuzzy hypercubes).
According to the information on the website it consists of 48 Origin2000 with 128 CPU's each. Each machine has 12 HIPPI-800 ports, connected via a 3-dimensional torodial interconnect (with 36 16-port switches).
The flyer notes that they plan to upgrade the interconnect in 1999 to HIPPI-6400 and 32-port HIPPI-6400 switches.
Ref: TOP500 Supercomputers: http://www.top500.org/top500.list.html LANL: http://www.lanl.gov/Internal/projects/asci/bluemtn/bluemtn.html (The Blue Mountain Flyer contains a lot of hard information about it)
> BTW, ASCI Blue Pacific, the 1344-processor IBM SP/2 version, is a cluster > of 8-way SMPs (iirc). It has a pretty horrible memory latency problem > inside a single node (it's as fast as talking to another node), but the > _idea_ is to have a lot of really fast local memory, plus a trusted, fast > connection to other SMPs.
4-way machines according to the information I found. Looks like they have a new "machine" on their way, with a total of 5856 CPU's (1464 4-way SMP machines) for "closed side" (classified stockpile stewardship computing ?)
From the information it looks like they have 2/3 of these already, which should put that relatively high on top500 list if it had been included. Both uses 4-way 332 MHz PPC604e, but there were old notes about planning to move to Power-3 in "1998". Looks like that have been delayed thought.
Ref: http://www.llnl.gov/asci/platforms/bluepac/
Lots of interresting links in that top500 list :-)
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |