[openib-general] Simple user level verb work

[Josh England]

Look at:
usr/mellanox/src/HCA/examples/rctest/rctp.c

-JE

On Wed, 2005-01-12 at 17:35 -0800, Bob Lee wrote:
> All,
> 	I'm using the current Mellanox software release.  The goal is
>     to do RDMA between two nodes.  I've looked at the code for
>     perf_main, and the OSU MPI implementation.  Currently, my attempt
>     to use the HCA die attempting to create the queue pair.  From
>     all I can tell, I mimic the initialization code up to that point,
>     but get the following error message:
> 
> 	     Max. SG size exceeds capabilities
> 
>     The question is, I assume this has to do with the scatter gather
>     count that the HCA can support.  HCA cap lists max_num_sg_ent = 28
>     and max_num_sg_ent_rd = 0.  The initialization  values for the
>     queue pair max_sg_size_rq and max_sg_size_sq are set to 8.
> 
>     	This is using user level verbs interface, but right now, it
>     is the only level that supports both user and kernel level interfaces.
>     Alternatively, are there any other very straight forward examples
>     of setting up an RDMA connection (NOTE: perf_main hasn't worked
>     so far -- at least in being straight forward).
> 
> thanks in advance
> - bob
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