[Beowulf] Infiniband Subnet Manager

Prentice Bisbal prentice at ias.edu
Thu Sep 4 11:37:23 PDT 2008

Prentice Bisbal wrote:
> Since an infiniband fabric needs a subnet mananger, should the master
> node have an IB HCA and be connected to the IB network in order to run
> the subnet manager?
> My logic behind this is that the master node will be full
> enterprise-level hardware (redundant every thing), and should never go
> down or be rebooted during normal use. I expect the nodes to go down
> more frequently (not fully redundant hardware, higher operating loads,
> etc.).
> Exactly what functions does the subnet manager perform, and what happens
> if it disappears from the IB fabric?
> I've been doing research into IB all day yesterday, and I'm continuing
> today, so please no RTFM answers.

I've gotten a lot of response to my IB questions that I posed to the
list. Thanks for all your help. All of my questions have been answered.
It turns out, as some as you pointed out, that my switch will have a
built-in subnet manager, so I won't need to run one on a node.


More information about the Beowulf mailing list