limited ports in GM

My research group are working on some project involving myrinet. We had
no prior experience about myrinet. 

We have set up the hardware, which is lanai4 PCI cards. We also set up 
the latest myricom message passing software, the GM.1.2.3. The first 
problem we have noticed is that GM only allows 8 ports (well actuall 
only 6 usable ports). So we tried to recompile the GM with GM_NUM_PORTS 
set to 16, but we are stuck with the problems that keep coming up:

1. After compiling the GM without the --enable-mcp-build option, 
the GM_INSTALL always failed with "failure to attatch driver"

2. If I compile the GM with --enable-mcp-build option, even though
GM_INSTALL went through, my application would have memory problem
"No mapping for user address ....", and corrupted data were transmitted
across the net.

So I am wondering maybe I need to reload the lanai processor with the 
recompiled mcp program explicitly. But I am not sure what is the proper
procedure to do this. 

I would really appreciate if someone can give me some information regarding

1. in generally how do you get more ports on myrinet?

2. if to change GM_NUM_PORTS, what is the proper procedure to make that change
   in effect.

Thanks.

--wenchao--