Re: Error - Unable to open a GM Port.

Patrick Geoffray <[email protected]> 15 Sep 2003 14:47:11 -0400
Newsgroups gmane.network.myrinet.general
Message-ID <1063651634.965.147.camel@asterix>
Hi Sid,

On Mon, 2003-09-15 at 01:02, Sid Carter wrote:
> I am getting this error, when I am trying to use GM.
> 
> "Error: Unable to open a GM port !"

> Any Solution ?

It's possible that the processes are running on the wrong nodes as Craig
noted. Add the "-v" flag to mpirun.ch_gm and send us the output to see
if they are spawned to the right nodes.

Another possibility is a more obscure GM lib/driver incompatibility
(which seem unlikely from your gm_board_info output). You can use strace
and see the return code of gm_open() but it's not very easy to do.

Patrick
-- 

Patrick Geoffray
Myricom, Inc.
http://www.myri.com