[ofa-general] Re: OpenSM and fat tree

[Chris Worley]

On Thu, May 15, 2008 at 11:14 AM, Ira Weiny <weiny2 at llnl.gov> wrote:
> On Thu, 15 May 2008 10:26:37 -0600
> "Chris Worley" <worleys at gmail.com> wrote:
<snip>
>> After an sm change (i.e. using the "-r" switch), nodes can't ping each
>> other over IPoIB (other protocols also can't communicate).
>
> Is it absolutely necessary to run with the "-r" switch?  Here we have not
> problems letting the SM attempt to use the same LID's for nodes.

yes, especially when chaging routing algorithms between the default
and fat-tree.

Chris