[openib-general] SA cache design

[Sean Hefty]

Eitan Zahavi wrote:
> So if the cache  is on another host - a new kind of MAD will have to be 
> sent on behalf of
> the original request?

I was thinking more in terms of redirection.

> In IB QoS properties are mainly the PathRecord parameters: SL, Rate, 
> MTU, PathBits (LMC bits).
> So if traditionally we had PathRecord requested for each Src->Dst port 
> now we will need to track at least:
> Src->Dst * #QoS-levels. (a non optimal implementation will require even 
> more: #Src->Dst * #Clients * #Servers * #Services).

I understand you now.

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?

- Sean