Re: [PATCH 1/1] Ibacm: default pkey for partitioned fabrics

[Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>]

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On 12/09/2015 01:22 PM, Jason Gunthorpe wrote:
> On Wed, Dec 09, 2015 at 05:13:49PM +0000, Hefty, Sean wrote:
>  
>> Example: Compute nodes are assigned pkeys 0x8000 and 0x7fff.  A node
>> running the job scheduler has pkeys 0xffff and 0x8000 (maybe it's
>> also the backup SA).  Ibacm would need to select pkey 0x8000 for
>> communication.
> 
> I've also seen the reverse, eg 0xFFFF is used for default ipoib
> communication and 0x8001 is assigned to only some nodes as a child
> vlan.

That's what I use internally in our test lab.

> Choosing 0x8001 in that case won't work either.

Nope.  The suggestion here would break our setup.  Well, *would* being
the operative word where what I mean is would if we used ibacm.  But
that's a story for another email...

-- 
Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
              GPG KeyID: 0E572FDD



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