[Beowulf] New member, upgrading our existing Beowulf cluster
gerry.creager at tamu.edu
Thu Dec 3 16:01:15 EST 2009
Prentice Bisbal wrote:
> Greg Lindahl wrote:
>> On Thu, Dec 03, 2009 at 10:40:12AM -0500, Prentice Bisbal wrote:
>>> if a single node goes down, you need to take down all the
>>> nodes in the chassis before you can remove the dead node. Not very
>> Eh? What's so hard about marking the other nodes as unusable in your
>> batch system, and waiting for them to become free?
>> -- greg
> I didn't say it was hard - just impractical. ;)
> I thought the same thing when HP told me the nodes weren't
> hot-swappable. But then when I learned the SuperMicros were hot
> swappable, I figured if SuperMicro can do it, why not HP?
> I'm sure you'll agree that taking just one node down instead of 4 is
> more convenient, and is less likely to draw the ire of your
Because of our ill-advised choice of a specific APC rack, whenever I've
got to remove one of the supermicro's from the 2uTwin chassis, I have to
power 'em all off. I then have to ease the chassis out so I've enough
room to get a node out. I learned to "just do it" after a 2 month whine-in.
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