Hi Roland Roland Dreier wrote on Thu, 19 Nov 2009 at 11:19:02
> >> WinOF has asynchronous interfaces for modify QP, and limited testing >> has shown that it can improve connection times. QP transitions are >> probably the second largest component of connection setup after the SA. >> Since the RDMA CM already provides an asynchronous interface, even >> existing apps may be able to be able to gain some benefit from this. > > can't anyone get async modify QP today on any platform by just doing the > operation in another thread (or thread pool)? It seems that the > operations themselves are heavy enough that thread dispatch, locking etc > is going to be significant overhead. Why should clients have to emulate asynchronous behavior when the (Mellanox) HCA command interface is already asynchronous? I would prefer any threading be added to the HCA driver in the kernel, and not as threads in each process. That would enable a seamless transition to a better driver model in the future. -Fab _______________________________________________ ofw mailing list [email protected] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/ofw
