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:
> 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
>> Krishna Chaitanya
>> On 1/2/08, Rolf Vandevaart <Rolf.Vandevaart_at_[hidden]> wrote: Krishna
>> Chaitanya wrote:
>> > Hi,
>> > I have been tracing the interactions between the
>> > and MPI library,on one machine. I have been using gdb along with
>> > 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
>> > 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
>> > xterm Xt error: Can't open display:
>> > xterm: DISPLAY is not set
>> > I tried using the display option for xterm and
>> > the value as 0.0, that was not of much help.
>> > If someone can guide me as to where the DISPLAY
>> > 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.
>> In the middle of difficulty, lies opportunity
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