> When i executed ibv_devinfo and checked the multicast props of the > device i got the following values: > > sw180:~ # ibv_devinfo -v | grep cast > This will severely limit memory registrations. > max_mcast_grp: 8192 > max_mcast_qp_attach: 0 > max_total_mcast_qp_attach: 0 > > It seems that the IB low level driver (drivers/infiniband/hw/mlx4) > doesn't fill the attribute max_mcast_qp_attach.
Yes, that code is missing. > When i tried to use multicast groups from user level i got weird failures. > > Does the low level driver support working with multicast groups from > user level? There's nothing special to do to handle userspace multicast groups. The multicast groups work well enough for IPoIB to work for me, but I haven't done any real testing. It should work but there's probably a silly bug somewhere. I just fixed one such bug but without knowing what your weird failures are, it's hard to say whether it would affect your tests. - R. _______________________________________________ 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
