Joshua, no need for excuses. I hope others on the list will agree that all information about reliable switches (as any good practice regarding clusters for that matter) is being read with high interest. A positive post might not get a lot of feedback but can be still extremely useful to many.
Igor > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] > Behalf Of Joshua Baker-LePain > Sent: 21 April 2006 00:26 > To: beowulf@beowulf.org > Subject: Re: [Beowulf] Gigabit switch recommendations > > > On Thu, 6 Apr 2006 at 12:06pm, Joshua Baker-LePain wrote > > > I've got my new switch in hand and I've done some > preliminary testing. So > > far, so good. Total bandwidth between 2 hosts connected to > the switch was > > quite comparable to that of the hosts being directly > connected for just about > > all the MTUs I tested (see > <http://www.duke.edu/~jlb17/tg3comp.png>). The > > hosts are centos 4.3 using onboard BCM5704 NICs (tg3 > driver), and I tested > > with netperf. > > > > Now I just need to get it hooked up to more hosts and > really have at it. > > Responding to myself one last time, I've put the switch (SMC8748L2) > through some more testing, and I'm pretty happy with it. I set up > increasing numbers of node pairs firing netperf at each other, and > compared netpipe runs as the switch load increased. > Unfortunately, node > count limited me to 24 netperf instances (50% load only), but > the switch > didn't even blink: > > http://www.duke.edu/~jlb17/np-comp.png > > All that testing was done with jumbo frames. I've put the > cluster back > into production, but if there's something in particular > someone would like > to see, let me know and I'll see if I can do it. > > -- > Joshua Baker-LePain > Department of Biomedical Engineering > Duke University > _______________________________________________ > Beowulf mailing list, Beowulf@beowulf.org > To change your subscription (digest mode or unsubscribe) > visit http://www.beowulf.org/mailman/listinfo/beowulf > _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
