[ofa-general] Re: rate assignment for path queries

Hal Rosenstock hal.rosenstock at gmail.com
Fri Nov 14 13:39:45 PST 2008


On Thu, Nov 13, 2008 at 8:43 AM, Or Gerlitz <ogerlitz at voltaire.com> wrote:
> Sasha Khapyorsky wrote:
>>>
>>> RED=0x8001, ipoib, sl=1, rate=2, defmember=full : ALL=full;
>>>
>>> When a path query is issued, Indeed sl=1 is returned but I see that a
>>> rate=6 (20Gbs) is returned where I configured rate=2 (2.5 Gbs).
>>
>> For my best knowledge rate=2 in partition config file will be related to
>> corresponded IPoIB multicast group for this partition, and not to
>> PathRecord. In PathRecord you get maximum available rate on the requested
>> path.
>
> I understand your comment about the relation to multicast join and not path
> queries. However,  currently, where  there's no rule in the qos-config file
> (or no file) that matches the path query, the SM does provide the SL
> assigned to the partition (specified in the query) through the pkey file but
> it doesn't do so for the Rate. So you say that for QoS = <SL, Rate>
> assignment one should use the qos-policy file, let it be.

I think Sasha is not saying "should use qos-policy file". You're
asking about the pre QoS annex Qos implementation in OpenSM and I
think this could be viewed as an omission (bug/feature). I think it
could easily be changed in SA PR/MPR support.

-- Hal

> Or.
>
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