[ofa-general] Bugs in opensm/libvendor

Todd Rimmer todd.rimmer at qlogic.com
Tue Dec 16 08:04:54 PST 2008


> From: Sasha Khapyorsky
> 
> On 07:08 Tue 16 Dec     , Hal Rosenstock wrote:
> > >
> > > Do you know what is a reason for this "127 records" limitation?
> >
> > Once you get past the scalability discussion (including limiting it to
> > SGID), is there a need for more than 127 ?
> 
> Let's say we want to get all paths between SGID A and DGID B, LMC=15 and
> so there could be 256 possible paths (assuming that differences are only
> in LIDs). Our first query will return 128 paths, then we will need to
> query SGID/SLID -> DGID for each SLID above base LID A + 7, obviously
> all this will require more queries, will pend more traffic and will hurt
> SA scalability more than if there would unlimited (or limited as 256)
> NumbPath.

[Todd Rimmer] The maximum value for LMC=7.  Hence for a given SGID-DGID pair on a specific SL, there is a limit of 127 paths.  So the spec is self consistent in that regard.

Todd Rimmer



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