Re: [Beowulf] Re: switching capacity terminology confusion

2009-09-17 Thread Gerry Creager
Rahul Nabar wrote: On Wed, Sep 16, 2009 at 11:28 AM, Gerry Creager wrote: silicon, if I recall correctly. I've several S50s in my data center, hammer the fool out of them, and am happy. Thanks Gerry! I have been getting many great reviews on Force10. Maybe I will seriously consider them. P

Re: [Beowulf] Virtualization in head node ?

2009-09-17 Thread Gerry Creager
Joshua Baker-LePain wrote: On Wed, 16 Sep 2009 at 12:01pm, Robert G. Brown wrote Unless/until Xen or KVM or something else comes out with a similarly powerful and tricked out console and ease of use and (still, overall) reliability, VMware will be on my personal laptops for the rest of time. It

Re: [Beowulf] storage server hardware considerations

2009-09-17 Thread Rahul Nabar
On Thu, Jul 16, 2009 at 1:36 AM, Eugen Leitl wrote: > If it has to be cheap I'd take e.g. a Sun with 8x 2.5" SATA drives, > using 300 GByte WD VelociRaptors as a stripe over mirrors, or 15 > krpm SAS drives. > > Right now you can populate a SuperMicro chassis with 16x SATA 3.5" > achieving e.g. a

Re: [Beowulf] storage server hardware considerations

2009-09-17 Thread Rahul Nabar
On Wed, Jul 15, 2009 at 8:57 PM, Mark Hahn wrote: > if you can't saturate gigabit with very modest raids, > you're doing something wrong.  a single ultra-cheap disk > these days (seagate 7200.12 500G, $60 or so) will hit close to 135 MB/s on > outer tracks and average > 105 over > the whole disk.

Re: [Beowulf] Re: switching capacity terminology confusion

2009-09-17 Thread Rahul Nabar
On Thu, Sep 17, 2009 at 9:47 AM, Mark Hahn wrote: >> the best answer I get is "Cisco is the market leader in switches". >> They won't show me which of their parameters make a Cisco switch >> better than the rest. > > well, one parameter is "market share".  another is "brand". > cisco owners will a

Re: [Beowulf] Re: switching capacity terminology confusion

2009-09-17 Thread Mark Hahn
the best answer I get is "Cisco is the market leader in switches". They won't show me which of their parameters make a Cisco switch better than the rest. well, one parameter is "market share". another is "brand". cisco owners will also often advocate benchmarking based on the "comfort-level" p

Re: [Beowulf] Re: switching capacity terminology confusion

2009-09-17 Thread Rahul Nabar
On Wed, Sep 16, 2009 at 11:28 AM, Gerry Creager wrote: > silicon, if I recall correctly.  I've several S50s in my data center, hammer > the fool out of them, and am happy. Thanks Gerry! I have been getting many great reviews on Force10. Maybe I will seriously consider them. >Prior to them, we us