Hi. On Monday 07 August 2006 10:06, Devesh Sharma wrote: > Hello everybody, > I have a query regarding cq poll concept. > Consider the following situation: > > Consumer has posted 2 SEND operations after that it posted 1 RDMA_READ > operation and againg 1 SEND operation ( Not posted with Barrier Fence, Is it > expected from consumer that it can post without Barrier Fence after RDMA > READ? ), now while polling in what order completions should be returned by > verbs? > > Is it expected by consumer that completions will be polled in posting order > or they can come out of order? > Polling order 2 SEND_COMP, 1 RDMA_READ_COMP, 1 SEND_COMP > OR > Polling order 3 SEND_COMP, 1 RDMA_READ_COMP > > which is expected?
The order the completions must be the same as the order of the WR that you posted to the Send Queue. so, you should expect the first option. as you mentioned, if the fence bit is enable on a specific SR, the HCA need to wait until all the previous SR will be finished (according to the fence laws in the IB spec ..). Dotan _______________________________________________ openib-general mailing list [email protected] http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
