>I've run into a problem where it appears that I cannot join more than 14 >multicast groups from a single HCA. I'm using the RDMA CM UD/multicast >interface from an OFED v1.2 nightly build, and using a '0' address when >joining to have the SM allocate an unused address. The first 14 >rdma_join_multicast() calls succeed, a MULTICAST_JOIN event comes >through for each of them and everything works. But the 15th call to >rdma_join_multicast() returns -1 and sets errno to 99, 'Cannot assign >requested address'.
I was able to join a total of 6 times before I started seeing failures. Each join is done by a separate process with their own QP. I'll track down the failure in more detail, but it will likely take me a couple of days to look into this. >This feels like a bug to me; though regardless this limit is WAY too >low. Any ideas what might be going on, or how I can work around it? At least on my systems, I see device attributes of: max_mcast_grp = 8192 max_mcast_qp_attach = 8 max_total_mcast_qp_attach = 65536 - Sean _______________________________________________ general mailing list [email protected] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
