CCL:Largest Linux Cluster? (fwd)
alvin at Maggie.Linux-Consulting.com
alvin at Maggie.Linux-Consulting.com
Thu Jan 24 10:17:28 PST 2002
hi art
On Thu, 24 Jan 2002, Art Edwards wrote:
> On Thu, Jan 24, 2002 at 05:55:24PM +0100, Eugene Leitl wrote:
...
> > Can anyone tell me what is currently the largest linux-based workstation
> > cluster that has been successfully deployed and is being used for
> > computational chemistry studies? (largest = number of nodes regardless of
> > the speed of each node).
> >
> Sandia National Laboratories has C-Plant that runs Linux in addition to several
> layers of home-grown OS on several thousand nodes. The basic node is a DEC
> ev6 with myranet (sp). They use no local disk, opting for a huge disk farm.
do you happen to know how they manage the huge disk farm???
- resumably raid5 systems...
- are each raid5 sub-system dual-hosted so that the other cpu
can getto the data if one of the cpu cant get to it
- does all nodes access the "disk farm" thru the gigabit ethernet
or dual-hosted scsi cables ??
- how does one optimize a disk farm ?? (hdparm seems too clumbsy)
-- in the old days.... 1980's ... there used to be dual-hosted
disk controllers where PC-HOST#1 and PC-HOST#2 can both access the same
physical CDC/DEC/Fujitsu drives
- wish i could find these dual host scsi controllers for todaysPCs
have fun linuxing
alvin
http://www.Linux-1U.net .. 8x 200GB IDE disks -->> 1.6TeraByte 1U Raid5 ..
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