Krishna,
Would it work to launch the gdb/ddd process separately on the remote
machine and then attaching to the mpi running jobfrom within gdb/ddd.
Something like
ssh -X [hostname|ip address] [ddd|gdb]
Doug Reeder
On Jan 3, 2008, at 8:32 AM, Jeff Squyres wrote:
Per my previous mail, Open MPI (by default) closes its ssh sessions
after the remote processes are launched, so X forwarding through ssh
will not work.
If it is possible (and I think it is, based on your subsequent
replies), you might be best served with unencrypted X forwarding.
On Jan 3, 2008, at 11:02 AM, Doug Reeder wrote:
Krishna,
Review the ssh and sshd man pages. When using ssh -X it takes care
of defining the DISPLAY and sending the X11 images to your screen.
Defining DISPLY directly generally won't work (that is how you do it
with rlogin but not with ssh).
Doug Reeder
On Jan 3, 2008, at 1:54 AM, Krishna Chaitanya wrote:
Hi Rolf,
Thanks for that. There is still one minor problem,
though. The xwindow is getting spawned on the remote machine and
not on my local machine. It now looks like,
mpirun --prefix /usr/local -hostfile machines -x DISPLAY -x PATH -
np 2 xterm -e gdb peruse_ex1
Please let me know what i can do to have it displayed
on my machine. I have the DISPLAY variable set to 0.0 on both the
machines and I am ssh-ing into the other machine by using the -X
switch.
Thanks,
Krishna Chaitanya
On 1/2/08, Rolf Vandevaart <rolf.vandeva...@sun.com> wrote: Krishna
Chaitanya wrote:
Hi,
I have been tracing the interactions between the
PERUSE
and MPI library,on one machine. I have been using gdb along with
xterm
to have two windows open at the same time as I step through the
code. I
wish to get a better glimpse of the working of the point to point
calls,
by launching the job on two machines and by tracing the flow in a
similar manner. This is where I stand as of now :
mpirun --prefix /usr/local -hostfile machines -np 2 xterm -e gdb
peruse_ex1
xterm Xt error: Can't open display:
xterm: DISPLAY is not set
I tried using the display option for xterm and
setting
the value as 0.0, that was not of much help.
If someone can guide me as to where the DISPLAY
parameter
has to be set to allow the remote machine to open the xterm
window, it
will be of great help.
Thanks,
Krishna
I also do the the following:
-x DISPLAY -x PATH
In this way, both your DISPLAY and PATH settings make it to the
remote node.
Rolf
--
=========================
rolf.vandeva...@sun.com
781-442-3043
=========================
--
In the middle of difficulty, lies opportunity
_______________________________________________
users mailing list
us...@open-mpi.org
http://www.open-mpi.org/mailman/listinfo.cgi/users
_______________________________________________
users mailing list
us...@open-mpi.org
http://www.open-mpi.org/mailman/listinfo.cgi/users
--
Jeff Squyres
Cisco Systems
_______________________________________________
users mailing list
us...@open-mpi.org
http://www.open-mpi.org/mailman/listinfo.cgi/users
