[openib-general] basic IB doubt

[Roland Dreier]

    Thomas> How does an adapter guarantee that no bridges or other
    Thomas> intervening devices reorder their writes, or for that
    Thomas> matter flush them to memory at all!?

That's a good point.  The HCA would have to do a read to flush the
posted writes, and I'm sure it's not doing that (since it would add
horrible latency for no good reason).

I guess it's not safe to rely on ordering of RDMA writes after all.

 - R.