Re: [Beowulf] SATA II - PXE+NFS - diskless compute nodes

2006-12-13 Thread Eric Shook
Thanks for the links Bill. I will check them out. Before I try it, how likely would it work for a system other than yours? :O) Bill Bryce wrote: It works but honestly I can't say it is 'production'. If you are interested in the 'roll' it is located at: http://www.osgdc.org/project/kusu/wik

Re: [Beowulf] SATA II - PXE+NFS - diskless compute nodes

2006-12-13 Thread Eric Shook
Thank you for commenting on this Greg. I might look deeper into perceus as an option if rhel (and particularly variants as in Scientific Linux) work well. Our infrastructure will most likely include nfs-root, possibly hybrid and full-install. So if Perceus can support it with a few simple VN

Re: [Beowulf] SATA II - PXE+NFS - diskless compute nodes

2006-12-13 Thread Donald Becker
On Wed, 13 Dec 2006, Simon Kelley wrote: > Donald Becker wrote: > > On Tue, 12 Dec 2006, Simon Kelley wrote: > >> Joe Landman wrote: > > I would hazard that any DHCP/PXE type install server would struggle > > with 2000 requests (yes- you arrange the power switching and/or > > reboots to

Re: [Beowulf] High performance storage with GbE?

2006-12-13 Thread Bill Broadley
Sorry all, my math was a bit off (thanks Mike and others). To be clearer: * $24k or so per pair of servers and a pair of 15*750GB arrays * The pair has 16.4TB usable (without the normal 5% reserved by the filesystem) * The pair has 20.5TB raw (counting disks use for spare and redundancy) * Eac

Re: [Beowulf] High performance storage with GbE?

2006-12-13 Thread Bill Broadley
Steve Cousins wrote: We are currently looking to upgrade storage on a 256 node cluster for ... 1.2 to 2.5 GB/sec when it gets to the storage. Of course, this is only ... What do you expect the I/O's to look like? Large file read/writes? Zillions of small reads/writes? To one file or dire

Re: [Beowulf] SATA II - PXE+NFS - diskless compute nodes

2006-12-13 Thread Simon Kelley
Donald Becker wrote: > On Tue, 12 Dec 2006, Simon Kelley wrote: > >> Joe Landman wrote: > I would hazard that any DHCP/PXE type install server would struggle > with 2000 requests (yes- you arrange the power switching and/or > reboots to stagger at N second intervals). > > Those that h

Re: [Beowulf] SATA II - PXE+NFS - diskless compute nodes

2006-12-13 Thread Greg Kurtzer
On Dec 9, 2006, at 11:27 AM, Eric Shook wrote: Not to diverge this conversation, but has anyone had any experience using this pxe boot / nfs model with a rhel variant? I have been wanting to do a nfs root or ramdisk model for some-time but our software stack requires a rhel base so Scyld

Re: [Beowulf] distributed file storage solution?

2006-12-13 Thread Anand Vaidya
On Saturday 09 December 2006 10:36, samit wrote: > hello list, > > i am looking for a application (most preferably, but not necessarily OSS or > free software) and that can create distributed, reliable, fault tolerant, > decentralized, high preformance file server. I've looked at few P2P file > sto