2/15/2013 · Is ibv_ poll _cq a blocking function? for example , if the CQ is empty, would ibv_ poll _cq return 0 immediately, or would it block and only sporadically returns 0? Reply. Dotan Barak says: December 22, 2017. Hi. ibv_ poll _cq() isn’t a blocking function and it will always return immediately.
C++ (Cpp) ib_poll_cq – 30 examples found. These are the top rated real world C++ (Cpp) examples of ib_poll_cq extracted from open source projects. You can rate examples to help us improve the quality of examples .
If the completion status is other than IBV_WC_SUCCESS, only the following attributes are valid: wr_id, status, qp_num, and vendor_err. RETURN VALUE On success, ibv_poll_cq() returns a non-negative value equal to the number of completions found. On failure, a negative value is.
3/9/2013 · 3.There are 4 threads at server side, each thread pre-posts recv and call ibv_get_cq_event and ibv_ poll _cq like above example in block way. 4.Post send with IBV_SEND_SIGNALED flag and IBV_WR_SEND opcode. 5.Call ibv_get_cq_event and ibv_ poll _cq again. 6.Call pthread_exit. At client side, just like the server side,, EXAMPLES The following code example demonstrates one possible way to work with completion events. It performs the following steps: Stage I: Preparation 1. Creates a CQ 2. Requests for notification upon a new (first) completion event Stage II: Completion Handling Routine 3. Wait for the completion event and ack it 4.
EXAMPLES The following code example demonstrates one possible way to work with completion events. It performs the following steps: Stage I: Preparation 1. Creates a CQ 2. Requests for notification upon a new (first) completion event Stage II: Completion Handling Routine 3. Wait for the completion event and ack it 4.
• For example … MPI is a large community … • Difficult to find out why ibv_post_send() or ibv_ poll _cq() failed, for example ! • Perhaps a better strerr() type of functionality (that can also obtain provider-specific strings)? Slide • Examples :! • Tag matching! • MPI non-blocking collective operations (TBD)!, EXAMPLES top The following code example demonstrates one possible way to work with completion events. It performs the following steps: Stage I: Preparation 1. Creates a CQ 2. Requests for notification upon a new (first) completion.
For example , assume I have the following order of events: 2 CQEs arrive select() returns readable for comp. channel ibv_get_cq_event() returns event ibv_req_notify_cq(cq, 0) ibv_ poll _cq(cq, 1, &cqe) returns 1 ibv_ack_cq_events(cq, 1) Will the comp. channel receive another event for the second CQE even if
