On Thu, 2005-11-17 at 07:49, Yael Kalka wrote: > Hello all, > > During some opensm tests we've encountered a situation where a call > to umad_send() fails on very large mads (on mads of size ~90,000). > Is there some limitation on the size of the mads that can be sent?
Those errors are the result of a kmalloc in user_mad.c (ib_umad module) when sending. > Reproduction of the issue is simple: > Run opensm > Then run osmtest -f m -M 3 > What the osmtest does in this case is try to create as many multicast > groups as possible (for all the possible MC_lids), and then > does an SA query on all the multicast groups that exist. > OpenSM will then try to answer with a huge group of multicast records, > and when opensm does umad_send() - it fails. > > Any ideas why this happens? Not yet. I now have this on my list but it is not top priority. I am still digging out from SC05. -- Hal _______________________________________________ openib-general mailing list [email protected] http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
