[ofa-general] Re: Limited number of multicasts groups that can be joined?

Andrew Friedley afriedle at open-mpi.org
Fri Jun 8 13:13:10 PDT 2007



Sean Hefty wrote:
> 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

OK I see the exact same thing here.  What exactly do these params mean? 
  Particularly max_mcast_qp_attach, is that the most QPs attached to one 
group for this device, or max groups a QP can attach to?

Andrew



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