Hi.
zhang Jackie wrote:
hi,
I am writing a program calling *ibv_post_send* to RDMA write data to
other node with *IBV_SEND_SIGNALED* option.
IBV_SEND_INLINE can be used with IBV_SEND_INLINE .*IBV_SEND_INLINE* is
to say that the buffer can be used immediately. If the packet is
small enough ,then it is very good to use IBV_SEND_INLINE.
IBV_SEND_INLINE means that the driver copy the data by itself and the
data buffers can be reused/freed.
while I send big data and dont use IBV_SEND_INLINE option ,So I must
wait a while before I can use this same buffer to post data again.In
fact some errors will be reported if there is no wait. SO I want to
know how long should I wait? And I think explicit wait is not the
correct solution to deal with such condition.
If you don't use IBV_SEND_INLINE, you must wait for the corresponding
completion of this WR. You are using IBV_SEND_SIGNALED Which means that
every WR will ends up with a completion, so in order to safely use the
data buffer, you must wait for the completion of this WR.
Can someone help me ?
Dotan
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