[openib-general] [RFC] Performance Manager

[Sean Hefty]

> Initially ? It is also an implementation phasing issue as stated. The
> core support is needed in both so there is very little unneeded work to
> get to the first phase in terms of a distributed approach. We would
> certainly grow/evolve towards this after that initial implementation.

Based on what you're saying, then a phased approach makes sense to me.

>>>1. Use vendor specific MADs (which can be RMPP'd) and build on top of
>>>this
>>>2. Use IPoIB which is much more powerful as sockets can then be utilized.
>>
>>You could also use RC QP communication up/down the hierarchy.
> 
> 
> Wouldn't that have the same issues as approach 1 (as compared with
> approach 2) ?

MAD overhead is significant.  You would get less overhead plus RDMA 
capabilities, which could affect the implementation design.

- Sean