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,
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
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,
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
Another simpler (but not secure) option would be do run "xhost
+hostname" for each machine that you'll be using and then use un-
encrypted X connections to pipe back to your display. This avoids a
bunch of issues (e.g., the ssh to launch the MPI job quitting because
it successfully
Krishna,
If you are using ssh to connect to the second machine you need to be
sure that ssh X11 forwarding is enabled and you may need to have mpi
use ssh -X or ssh -Y to connect to the second machine. That is how
the DISPLAY gets set using ssh.
Doug Reeder
On Jan 1, 2008, at 8:11 AM,
Krishna,
When you log in to the remote system, use ssh -X or ssh -Y which will
export the xterm back thru the ssh connection.
Jeff Pummill
University of Arkansas
Krishna Chaitanya wrote:
Hi,
I have been tracing the interactions between the PERUSE
and MPI library,on one
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
