Lilac Supercomputer

[lilac]

hello everybody,

i'm a new member in this forum. i have some questions regarding the lilac supercomputer. can somebody give me some information about the interconnection and parallelism about the lilac supercomputer (rated #17 by the top 500 computers org) ? thank u...

[ECA]

wouldnt it be easier to talk to the folks who made it??
we could probably GUESS at the basic structure and design, but they would KNOW what they did, and how.

[ECA]

http://www.top500.org/sublist/System.php?id=6829
Thats the system..

http://www.developer.ibm.com/solutions/isv/igssg.nsf/AllSolutionsbyID/86256B7B0003EBBF86256ECC0032EBC7?OpenDocument
This is for the quadrics...up to 4096 nodes...WOW..

http://www.developer.ibm.com/solutions/isv/igssg.nsf/AllSolutionsbyID/86256B7B0003EBBF86256EE0003803CE?OpenDocument
Linux based clusters

http://www-306.ibm.com/common/ssi/fcgi-bin/ssialias?subtype=ca&infotype=an&appname=iSource&supplier=897&letternum=ENUS104-009
This is the system, 1 node.

I think the chips need 1gig cache, but cool system.

[spankers]

Hmmm... wonder how fast ol' Lilac would encode mp3's or divx? I couldn't afford the power bill though.

[spankers]

With a wav file of 3 minutes 30 seconds encoding to mp3 with LAME it looks like it would take 2 milliseconds average raw for a 4096 node cluster, each node only processing 432 bytes. It would take longer to assemble the results from the individual nodes.

[lilac]

thank u very much for ur help 'spankers'. i have tried to email the livermore, but i didn't get any reply. btw, do u mean that they use the QsNetII E-Series ? n i don't quite understand about the linux cluster based link, what does it suppose to refer to ?
thank u.

[spankers]

Most clusters out there are running Linux or Unix and derive from the original Beowulf project. For some hardware specifics go to the LLNL site:
http://www.llnl.gov/computing/tutorials/linux_clusters/

and Beowulf:
http://www.beowulf.org/

[ECA]

Beowulf, is the GREAT advancement.

Insted of using 1 LARGE computer to do ALL the tasks, it uses ALL the computers in a group to process and run everything..sharing the processing tasks with LOTS of nodes it takes little or no time to BEAT the proceessing power of the biggest machines.

they've created graphic rendering staions this way, for 3D graphics. what used to take years to create now takes months.
this also works great with multi CPU systems.
Say you have a string of systems that have 4 - 1-2ghz cpu's, and string about 16 of them together.16x4= the power of 64 CPU's processing your data.
NOw if we could do this with graphic cards, it would be GREAT...

[lilac]

thank u for the information. it is very helpful. first i thought that they were using the QS Net II technology, but referring from the Elan 3 they were using, i think they are using the QS Net technology. anybody agree with me ? but i can't seem to find a complete information about the QS Net on the Quadrics site, mostly they are giving information about QS Net II. so can anybody give me an information or data sheet about QS Net ? thank u.

[llbbl]

Here is overview of QS NET and Elan stuff lilac is talking about. It seems lilac is refferring to a way to network supercomputers together.

http://www.c3.lanl.gov/~fabrizio/quadrics.html

http://doc.quadrics.com/Quadrics/QuadricsHome.nsf/DisplayPages/3A912204F260613680256DD9005122C7


Hope that helps.