[openib-general] [ANNOUNCE] Contribute RDS ( ReliableDatagramSockets) to OpenIB

[Caitlin Bestler]

Mike Krause wrote in response to Greg Lindahl:
	
	
>	If it is to be reasonably robust, then RDS should be required to
support
> the resync between the two sides of the communication.  This aligns
with the
> stated objective of implementing reliability in one location in
software and
> one location in hardware.  Without such resync being required in the
ULP,
> then one ends up with a ULP that falls shorts of its stated objectives
and
> pushes complexity back up to the application which is where the
advocates
> have stated it is too complex or expensive to get it correct.
	
	
	

>>		This sort of message service, by the way, has a long
history in distributed computing.


>	Yep.   
	

I haven't reread all of RDS fine print to double-check this, but my
impression is that RDS semantics exactly match the subset of MPI
point-to-point communications where the receiving rank is required
to have pre-posted buffers before the send is allowed.