[openib-general] SA cache design

[Eitan Zahavi]

Sean Hefty wrote:
> Eitan Zahavi wrote:
> 
>>> Can someone familiar with the opensm code tell me how difficult it 
>>> would be to extract out the code that tracks the subnet data and 
>>> responds to queries?
>>
>>
>> I guess you mean the code that is answering to PathRecord queries?
> 
> 
> Yes - that along with answering other queries.
> 
>> It is possible to extract the "SMDB" objects and duplicate that database.
>> I am not sure it is such a good idea. What if the SM is not OpenSM?
> 
> 
> I was thinking in terms of code re-use, and not in terms of which SM was 
> running.  Interfacing to the SM would be through standard queries.
The issue is that answering PathRecords queries can have impact on further algorithms the SM takes.
It might not be enough to know the topology, SL2VL, LFT, MFT to answer PathRecord attributes...
> 
> - Sean