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