[Beowulf] Anyone having IPMI problems on Intel S3200 series motherboards?
landman at scalableinformatics.com
Mon Apr 20 07:22:40 EDT 2009
Henning Fehrmann wrote:
> Hi Greg,
> On Mon, Apr 20, 2009 at 01:28:50AM -0700, Greg Lindahl wrote:
>> On Mon, Apr 20, 2009 at 09:24:09AM +0200, Henning Fehrmann wrote:
>>> We also had this problem with Supermicro boards and IPMI cards in a large
>>> scale. Finally we found a solution by upgrading the firmware of the NICs which are
>>> actually from Intel.
>> I take it that you didn't get the version with the dedicated ethernet
>> port for IPMI?
> Correct, we do not have IPMI cards with a dedicated ethernet port, at
> least for the nodes.
We've found that, for nodes like this, when you reboot the machine, the
OS tears down the NIC setup, and things like arp responses suddenly
disappear. Which means either keeping a log of arp -> IP mapping, as
the nics, with a torn down arp daemon, won't respond ...
... or avoid buying the no-NIC BMCs. We started doing that a few years
ago, as our customers were getting annoyed by those problems (and our
'solution' of maintaining arp tables with a script to force the mac->ip
mapping, while working, was at best a hack).
From our experience ... spend the extra several dollars on the NIC
version, and the cable. It will save time/effort over the long haul.
Joseph Landman, Ph.D
Founder and CEO
Scalable Informatics LLC,
email: landman at scalableinformatics.com
web : http://www.scalableinformatics.com
phone: +1 734 786 8423 x121
fax : +1 866 888 3112
cell : +1 734 612 4615
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