Here's a guess:
Are you starting the pvmd's with ssh, and then ssh quits? If so, the
tunneled X channel is no longer available.
On Tue, 21 Jan 2003, Thomas Naughton wrote:
> I'm not exactly sure about this problem (we don't have X on our compute
> nodes) but I'll bet it has something to do with the shell started by
> 'pvmd' is non-interactive.
>
> I can't think of a good/quick fix. You might try wrapping the PVM app to
> set DISPLAY and see if the SSH Fwd works then? Not sure?
>
> On Tue, 21 Jan 2003, Kaizaad Bilimorya wrote:
>
> >
> > Nodes: Dell OptiPlex GX240
> > NIC: 3C905CX
> > OS: RedHat 7.1
> > oscar 1.2.1
> >
> > I have searched around and have nowhere else to turn. I wonder if
> > anyone else here has ran into this problem?
> >
> > I have turned on X11 forwarding. I have no problem with running a
> > command to open an xterm window or another X app on a node
> >
> > eg:
> >
> > [kaizaad@beowulf kaizaad]$ ssh node2 /xtest
> >
> > opens an test xterm window from node2. The display enviornment
> > variable is already set by ssh and the window pops up on my screen.
> >
> > The problem arises is I use pvm to spawn a window on a node.
> >
> > eg:
> >
> > pvm> conf
> > conf
> > 2 hosts, 1 data format
> > HOST DTID ARCH SPEED DSIG
> > beowulf 40000 LINUX 1000 0x00408841
> > node2.brockwulf.ca 80000 LINUX 1000 0x00408841
> >
> >
> > pvm> spawn -node2.brockwulf.ca /xtest
> > spawn -node2.brockwulf.ca /xtest
> > 1 successful
> > t80001
> >
> > Looks good but no window pops up and when I check the log file
> > /tmp/pvml.1745 I get
> >
> > [t80040000] 01/21 15:32:21 [t80001] /xtest Xt error: Can't open display:
>node2.brockwulf.ca:10.0
> >
> > The test_cluster script (supplied with OSCAR) works fine so I think my
> > PVM works. And I haven't got any complaints from people using pvm if
> > they don't have any X windows that they need to popup.
> >
> > Has anyone else run into this problem? I could turn X11 forwarding
> > off but I would rather keep it encrypted.
--
{+} Jeff Squyres
{+} [EMAIL PROTECTED]
{+} http://www.lam-mpi.org/
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