In general, Open MPI doesn't have anything to do with X forwarding.
However, if you're using ssh to startup your processes, ssh may
configure X forwarding for you (depending on your local system
setup). But OMPI closes down ssh channels once applications have
launched (there's no need to keep them open), so any X forwarding that
may have been setup will be closed down.
The *easiest* way to setup X forwarding is simply to allow X
connections to your local host from the node(s) that will be running
your application. E.g., use the "xhost" command to add the target
nodes into the access list. And then have mpirun export a suitable
DISPLAY variable, such as:
export DISPLAY=my_hostname:0
mpirun -x DISPLAY ...
The "-x DISPLAY" clause tells Open MPI to export the value of the
DISPLAY variable to all nodes when running your application.
Hope this helps.
On May 30, 2008, at 1:24 PM, Cally K wrote:
hi, I have some problem running DistributedData.cxx ( it is a VTK
file ) , I need to be able to see the rendering from my computer
I, however have problem running the executable, I loaded both the
executabe into 2 machines
and I am accesing it from my computer( DHCP enabled )
after running the following command - I use OpenMPI
mpirun -hostfile myhostfile -np 2 -bynode ./DistributedData
and I keep getting these errors
ERROR: In /home/kalpanak/Installation_Files/VTKProject/VTK/Rendering/
vtkXOpenGLRenderWindow.cxx, line 326
vtkXOpenGLRenderWindow (0x8664438): bad X server connection.
ERROR: In /home/kalpanak/Installation_Files/VTKProject/VTK/Rendering/
vtkXOpenGLRenderWindow.cxx, line 169
vtkXOpenGLRenderWindow (0x8664438): bad X server connection.
[vrc1:27394] *** Process received signal ***
[vrc1:27394] Signal: Segmentation fault (11)
[vrc1:27394] Signal code: Address not mapped (1)
[vrc1:27394] Failing at address: 0x84
[vrc1:27394] [ 0] [0xffffe440]
[vrc1:27394] [ 1] ./
DistributedData(_ZN22vtkXOpenGLRenderWindow20GetDesiredVisualInfoEv
+0x229) [0x8227e7d]
[vrc1:27394] [ 2] ./
DistributedData(_ZN22vtkXOpenGLRenderWindow16WindowInitializeEv
+0x340) [0x8226812]
[vrc1:27394] [ 3] ./
DistributedData(_ZN22vtkXOpenGLRenderWindow10InitializeEv+0x29)
[0x82234f9]
[vrc1:27394] [ 4] ./
DistributedData(_ZN22vtkXOpenGLRenderWindow5StartEv+0x29) [0x82235eb]
[vrc1:27394] [ 5] ./
DistributedData(_ZN15vtkRenderWindow14DoStereoRenderEv+0x1a)
[0x82342ac]
[vrc1:27394] [ 6] ./
DistributedData(_ZN15vtkRenderWindow10DoFDRenderEv+0x427) [0x8234757]
[vrc1:27394] [ 7] ./
DistributedData(_ZN15vtkRenderWindow10DoAARenderEv+0x5b7) [0x8234d19]
[vrc1:27394] [ 8] ./DistributedData(_ZN15vtkRenderWindow6RenderEv
+0x690) [0x82353b4]
[vrc1:27394] [ 9] ./
DistributedData(_ZN22vtkXOpenGLRenderWindow6RenderEv+0x52) [0x82245e2]
[vrc1:27394] [10] ./DistributedData [0x819e355]
[vrc1:27394] [11] ./
DistributedData(_ZN16vtkMPIController19SingleMethodExecuteEv+0x1ab)
[0x837a447]
[vrc1:27394] [12] ./DistributedData(main+0x180) [0x819de78]
[vrc1:27394] [13] /lib/libc.so.6(__libc_start_main+0xe0) [0xb79c0fe0]
[vrc1:27394] [14] ./DistributedData [0x819dc21]
[vrc1:27394] *** End of error message ***
mpirun noticed that job rank 0 with PID 27394 on node .... exited on
signal 11 (Segmentation fault).
Maybe I am not doing the xforwading properly, but has anyone ever
encountered the same problem, it works fine on one pc, and I read
the mailing list but I just don't know if my prob is similiar to
their, I even tried changing the DISPLAY env
This is what I want to do
my mpirun should run on 2 machines ( A and B ) and I should be able
to view the output ( on my PC ),
are there any specfic commands to use.
_______________________________________________
users mailing list
us...@open-mpi.org
http://www.open-mpi.org/mailman/listinfo.cgi/users
--
Jeff Squyres
Cisco Systems
