[ofa-general] Re: [PATCH] mlx4: display misc device information via sysfs under /sys/class/infiniband/mlx4_x, for ibstat and ibv_devinfo

Jack Morgenstein jackm at dev.mellanox.co.il
Tue Oct 2 00:38:32 PDT 2007


On Monday 01 October 2007 22:47, Roland Dreier wrote:
>  > Yes, the change should go upstream.  With an MGM entry size of 64, each multicast group
>  > can support only 8 QPs.  Increasing the entry size to 256 enables support of 56 QPs per
>  > multicast group (8 QPs per multicast group was not enough for some users).
> 
> OK, send a patch I guess.  But is there some reason why the same limit
> in mthca wasn't a problem for years now?

Reason is new 16-core nodes (4 socket quad-core).  Want a QP per node to join a specific multicast group.

I'm sending a patch in a separate post.

- Jack


>  - R.
> 



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