Re: [OMPI users] Problem with X forwarding
Hi,
Am 09.06.2008 um 18:13 schrieb Dave Grote:
I have this same issue from a while ago. Search for "x11
forwarding" in
the archives. The solution I settled on is to use the -d option, the
debug option. With this option, mpirun will keep the ssh sessions
open,
and so the X forwarding stays active. Note that you do get lots of
debugging output at the start of the run, but after that, there's no
extra output. An enhancement ticket was going to be added to add a
command line option to keep the ssh sessions open (without having to
turn debugging on). I never heard anything more on it, so apparently
nothing happened. But using the -d option does work well and doesn't
require any extra fiddling.
maybe an additional line (the last one here) in your ~/.ssh/config
can do a similar thing. Usually I have therein:
Host *
ForwardAgent yes
ForwardX11 yes
ForwardX11Trusted yes
Compression yes
NoHostAuthenticationForLocalhost yes
ServerAliveInterval 900
-- Reuti
Dave
Allen Barnett wrote:
If you are using a recent version of Linux (as machine A), the X
server
is probably started with its TCP network connection turned off. For
example, if you do:
$ ps auxw | grep X
/usr/bin/Xorg :0 -br -audit 0 -auth /var/gdm/:0.Xauth -nolisten
tcp vt7
The "-nolisten tcp" option turns off the X server's remote connection
socket. Also, "netstat -atp" on A will show that nothing is
listening on
port 6000. So, for example, from machine B:
[B]$ xlogo -display A:0
doesn't work.
The trick I've used: Before you run your MPI application, you can
ssh to
the remote node with X forwarding enabled ("ssh -Y"). On the remote
system, do "echo $DISPLAY" to see what DISPLAY environment
variable ssh
created. For example, it might be something like "localhost:10.0".
Leave
this ssh connection open and then run your OMPI application in
another
window and pass "-x DISPLAY=localhost:10.0" through MPI. X
applications
on the remote node *should* now be able to connect back through
the open
ssh connection. This probably won't scale very well, though.
Allen
On Wed, 2008-06-04 at 14:36 -0400, Jeff Squyres wrote:
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] [0xe440]
[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] ./
D
Re: [OMPI users] Problem with X forwarding
I have this same issue from a while ago. Search for "x11 forwarding" in
the archives. The solution I settled on is to use the -d option, the
debug option. With this option, mpirun will keep the ssh sessions open,
and so the X forwarding stays active. Note that you do get lots of
debugging output at the start of the run, but after that, there's no
extra output. An enhancement ticket was going to be added to add a
command line option to keep the ssh sessions open (without having to
turn debugging on). I never heard anything more on it, so apparently
nothing happened. But using the -d option does work well and doesn't
require any extra fiddling.
Dave
Allen Barnett wrote:
If you are using a recent version of Linux (as machine A), the X server
is probably started with its TCP network connection turned off. For
example, if you do:
$ ps auxw | grep X
/usr/bin/Xorg :0 -br -audit 0 -auth /var/gdm/:0.Xauth -nolisten tcp vt7
The "-nolisten tcp" option turns off the X server's remote connection
socket. Also, "netstat -atp" on A will show that nothing is listening on
port 6000. So, for example, from machine B:
[B]$ xlogo -display A:0
doesn't work.
The trick I've used: Before you run your MPI application, you can ssh to
the remote node with X forwarding enabled ("ssh -Y"). On the remote
system, do "echo $DISPLAY" to see what DISPLAY environment variable ssh
created. For example, it might be something like "localhost:10.0". Leave
this ssh connection open and then run your OMPI application in another
window and pass "-x DISPLAY=localhost:10.0" through MPI. X applications
on the remote node *should* now be able to connect back through the open
ssh connection. This probably won't scale very well, though.
Allen
On Wed, 2008-06-04 at 14:36 -0400, Jeff Squyres wrote:
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] [0xe440]
[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 ra
Re: [OMPI users] Problem with X forwarding
If you are using a recent version of Linux (as machine A), the X server
is probably started with its TCP network connection turned off. For
example, if you do:
$ ps auxw | grep X
/usr/bin/Xorg :0 -br -audit 0 -auth /var/gdm/:0.Xauth -nolisten tcp vt7
The "-nolisten tcp" option turns off the X server's remote connection
socket. Also, "netstat -atp" on A will show that nothing is listening on
port 6000. So, for example, from machine B:
[B]$ xlogo -display A:0
doesn't work.
The trick I've used: Before you run your MPI application, you can ssh to
the remote node with X forwarding enabled ("ssh -Y"). On the remote
system, do "echo $DISPLAY" to see what DISPLAY environment variable ssh
created. For example, it might be something like "localhost:10.0". Leave
this ssh connection open and then run your OMPI application in another
window and pass "-x DISPLAY=localhost:10.0" through MPI. X applications
on the remote node *should* now be able to connect back through the open
ssh connection. This probably won't scale very well, though.
Allen
On Wed, 2008-06-04 at 14:36 -0400, Jeff Squyres wrote:
> 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] [0xe440]
> > [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 machine
Re: [OMPI users] Problem with X forwarding
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] [0xe440] [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
[OMPI users] Problem with X forwarding
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] [0xe440] [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.
