[ofa-general] Memory registration redux

[Jonathan Perkins]

On Tue, May 05, 2009 at 04:57:09PM -0400, Jeff Squyres wrote:
> Roland and I chatted on the phone today; I think I now understand  
> Roland's counter-proposal (I clearly didn't before).  Let me try to  
> summarize:
>
> 1. Add a new verb for "set this userspace flag to 1 if mr X ever becomes 
> invalid"
> 2. Add a new verb for "no longer tell me if mr X ever becomes invalid" 
> (i.e., remove the effects of #1)
> 3. Add run-time query indicating whether #1 works
> 4. Add [optional] memory registration caching to libibverbs
>
> Prior to talking to Roland, I had envisioned *one* flag in userspace  
> that indicated whether any memory registrations had become invalid.   
> Roland's idea is that there is one flag *per registration* -- you can  
> instantly tell whether a specific registration is valid.
>
> Given this, let's keep the discussion going here in email -- perhaps the 
> teleconference next Monday may become moot.

It looks like there has been more discussion on how to implement this
idea.  Are we still planning on having this teleconference today?

-- 
Jonathan Perkins
http://www.cse.ohio-state.edu/~perkinjo
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