You need to put something like
>> mpirun -np 4 -x DISPLAY=host.xxx.xxx.xxx:0.0 your.program
Just saying -x DISPLAY doesn't set the environment properly.
Elie Choueiri wrote:
>Hi
>
>I've got an opengl program that uses glut (and creates a window using it).
>I'd like the program to create a window on each process, preferrably
>on their own machines.
>Running the program on one machine works fine, I even get the multiple
>windows up, so I'm almost convinced it's a security issue.
>
>Oh, and I'm running this on identical Fedora Core 2 machines..
>
>MPI is already set up (and works properly, btw)...
>
>So, running my program draws a window on the master process[or], but
>for the slaves - nothing.
>
>[esc00_at_fas70522 cc-parallel-rendering]$ mpirun -np 3 Catmull-Clark
>test-files/cube1.txt
>freeglut freeglut (Catmull-Clark): (Catmull-Clark): failed to open
>display ''failed to open display ''
>
>-----------------------------------------------------------------------------
>One of the processes started by mpirun has exited with a nonzero exit
>code. This typically indicates that the process finished in error.
>If your process did not finish in error, be sure to include a "return
>0" or "exit(0)" in your C code before exiting the application.
>
>PID 6246 failed on node n0 (192.168.192.3) due to signal 13.
>-----------------------------------------------------------------------------
>
>
>I've tried running the FAQ example for getting xterm windows with the
>following results:
>
>[esc00_at_fas70522 cc-parallel-rendering]$ mpirun C -x DISPLAY
>run_xterm.csh Catmull-Clark
>Running xterm on fas70533.cs.aub.edu.lb
>Running xterm on fas70532.cs.aub.edu.lb
>Running xterm on fas70522.cs.aub.edu.lb
>Xlib: connection to ":0.0" refused by server
>Xlib: No protocol specified
>
>xterm Xt error: Can't open display: :0.0
>-----------------------------------------------------------------------------
>It seems that [at least] one of the processes that was started with
>mpirun did not invoke MPI_INIT before quitting (it is possible that
>more than one process did not invoke MPI_INIT -- mpirun was only
>notified of the first one, which was on node n0).
>
>mpirun can *only* be used with MPI programs (i.e., programs that
>invoke MPI_INIT and MPI_FINALIZE). You can use the "lamexec" program
>to run non-MPI programs over the lambooted nodes.
>-----------------------------------------------------------------------------
>
>
>I've already said xhost +<slave_ips> on the master and even run xhost
>+<master_ip> on each of the slaves.
>
>Help please?
>_______________________________________________
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>
>
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