[MPICH] Tracing the mpich library with gdb and xtern

[Ashley Pittman]

On Thu, 2008-01-03 at 16:44 +0530, Krishna Chaitanya wrote:
> Hi Ravi,
>             The problem is as simple as this :  When I issue the
> mpiexec command with the gdb option, i wish to have xterm launch two
> debug windows so that i can trace through sender's and the receiver's
> codes. 
>              As of now, xterm is launching two windows, but one on my
> local machine and the other on the remote machine and I wish to have
> both displayed on the local machine. 
> >         You have to set the DISPLAY variable to the IPAddress:0.0 on
> the remote machine whre you are trying to run the job.
>               The IPAddress should be the remote machine's or the
> local machine's? 
> 
>              I anyway tried both. 
>  At the local machine, i did  "xhost +" and got :
> access control disabled, clients can connect from any host
> 
>              But, the remote node's debug window is still being
> launched in the remote machine and not on the local machine.

It sounds like you set DISPLAY before sshing to the remote machine, you
should run ssh without the -x flag (although it won't do any harm) and
set DISPLAY on the machine where you issue the mpirun.

Ashley,