[openib-general] 'Couldn't post send' error?

[Roland Dreier]

    Troy> What's this mean?  da4:~/NetPIPE_3.6.2# ibv_rc_pingpong
    Troy> 10.1.5.218 local address: LID 0x0002, QPN 0x0d0404, PSN
    Troy> 0x599dea remote address: LID 0x0001, QPN 0x090404, PSN
    Troy> 0x93b0c8 Couldn't post send

ibv_post_send() is failing.  Most likely the send queue is overflowing.

Did ibv_rc_pingpong work in the past?  If so what changed in your setup?

If you change the line

				.max_send_wr  = 1,

in rc_pingpong.c to 

				.max_send_wr  = 4,

does it work?  How about

				.max_send_wr  = 2,

Thanks,
  Roland