[openib-general] Minutes for January 15, 2007 teleconference about OFED 1.2 development progress toward code freeze

[Roland Dreier]

 > 	when RDMA is used, a message is transferred from card A (in node
 > A) to card B (in node B), card B delivers the message to to user buffer,
 > and sends ACK to card A, but ACK is lost due to switch fail. So process
 > on node A get fail for this transfer, but process on node B check the
 > memory  and get the message(success).
 > 
 > 	If send/recv(SRQ) is used, is it possible that process on node A
 > get failure, but process on node B successfully get the message ?

Yes, of course, for exactly the same reason you describe above (lost ACK).

 - R.