> attr.rnr_retry = 7;
Can you drop this to 6 and see if the behavior changes?
> recv_thread (void *arg)
> {
> struct ibv_cq *ev_cq;
> void *ev_ctx;
> int ret;
>
>
> ret = ibv_get_cq_event(comp_channel, &ev_cq, &ev_ctx);
> if (ret) {
> return 1;
> }
>
> ibv_ack_cq_events(ev_cq, 1);
>
> ret = ibv_req_notify_cq(ev_cq, 0);
> if (ret) {
> return 1;
> }
>
> while ((rv = ibv_poll_cq(cq, 1, &wc)) == 1) {
> switch (wc.opcode) {
> case IBV_WC_SEND: {
> if (wc.status == IBV_WC_SUCCESS) {
> if (sq_wr_id[head] != wc.wr_id) {
> datasz = 0;
> return 1;
> }
> } else {
> retuen 1;
^^^^^^
Are you sure this is the code that's running?
> }
> buf = (char *)send_data[head];
> arg = (u64)send_arg[head];
> sq_wr_id[head] = 0;
> if (head == 19) {//max_send_wr -1
> head = 0;
> } else {
> head += 1;
> }
> break;
> }
> }
>
> }
Where do you re-post receives?
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