<br><font size=2 face="sans-serif">Dear John, et al.,</font>
<br>
<br><font size=2 face="sans-serif">I could bond all the nodes in my cluster
(Dell 1750s and Dell1850s with dual Gig ethernets on the motherboard).
However, I cannot tell if I would get more bandwidth that way or just more
ethernet packet resends because of out of order packets. </font>
<br>
<br><font size=2 face="sans-serif">Do you get improved performance on your
"bonded" cluster?</font>
<br>
<br><font size=2 face="sans-serif">Does bonding two ethernet cards
add to the performance of an NFS beowulf cluster, with the master
node being the NFS server? Or is bonding just a method to improve availability
to the node if one ethernet card fails?</font>
<br>
<br><font size=2 face="sans-serif">I cannot find any metrics on bonding
or teaming ethernet cards. </font>
<br><font size=2 face="sans-serif">------<br>
Sincerely,<br>
<br>
Tom Pierce<br>
</font>
<br>
<br>
<br><font size=2><tt>Message: 11<br>
Date: Fri, 05 May 2006 10:08:47 +0100<br>
From: John Hearns <john.hearns@streamline-computing.com><br>
Subject: Re: [Beowulf] 512 nodes Myrinet cluster Challanges<br>
To: scheinin@crs4.it<br>
Cc: beowulf@beowulf.org<br>
Message-ID: <1146820127.6031.15.camel@Vigor13><br>
Content-Type: text/plain<br>
<br>
On Fri, 2006-05-05 at 10:23 +0200, Alan Louis Scheinine wrote:<br>
> Since you'all are talking about IPMI, I have a question.<br>
> The newer Tyan boards have a plug-in IPMI 2.0 that uses<br>
> one of the two Gigabit Ethernet channels for the Ethernet<br>
> connection to IPMI. If I use channel bonding (trunking) of the<br>
> two GbE channels, can I still communicate with IPMI on Ethernet?<br>
<br>
We recently put in a cluster with bonded gigabit, however that was done<br>
using a separate dual-port PCI card.<br>
On Supermicro, the IPMI card by default uses the same MAC address as the<br>
eth0 port which it shares. You could reconfigure this I think.<br>
(lan set 1 maccaddr <x:x:x:x:x:x><br>
Also Supermicro have a riser card00:30:48:2d:49:44<br>
which provides a separate network and serial port for the IPMI card.<br>
Tyan probably have similar.<br>
<br>
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