[mpiwg-rma] [EXTERNAL] ambiguity in MPI_WIN_FLUSH_LOCAL and completion of bidirectional operations

[Underwood, Keith D]

> I'm not sure I agree with your hardware crystal ball.  NIC-to-NIC reliability
> would still permit separation of local and remote completion since the former
> occurs as soon as the data reaches the NIC.  While on-chip, coherent
> networks may become common at the high-end of HPC, do you believe that
> distinct-NIC-based systems will completely disappear soon?

I wouldn't think that higher bandwidth NICs would be able to afford to buffer all of the data on the NIC for the general case...