On 11/19/18 4:51 PM, Mahmood Naderan wrote: > With and without --x11, I am not able to see xclock on a compute node.
> > [mahmood@rocks7 ~]$ srun --x11 --nodelist=compute-0-3 -n 1 -c 6 > --mem=8G -A y8 -p RUBY xclock > srun: error: Cannot forward to local display. Can only use X11 > forwarding with network displays. > [mahmood@rocks7 ~]$ srun --nodelist=compute-0-3 -n 1 -c 6 --mem=8G -A > y8 -p RUBY xclock > Error: Can't open display: :1 > srun: error: compute-0-3: task 0: Exited with exit code 1 > [mahmood@rocks7 ~]$ > [mahmood@rocks7 ~]$ rocks run host compute-0-3 "yum list libssh2-devel" > Warning: untrusted X11 forwarding setup failed: xauth key data not > generated > Loaded plugins: fastestmirror > Loading mirror speeds from cached hostfile > Installed Packages > libssh2-devel.x86_64 1.4.3-10.el7_2.1 > @Rocks-7.0 > Available Packages > libssh2-devel.i686 1.4.3-10.el7_2.1 > Rocks-7.0 > [mahmood@rocks7 ~]$ rocks run host compute-0-3 "yum list xorg-x11-apps" > Warning: untrusted X11 forwarding setup failed: xauth key data not > generated > Loaded plugins: fastestmirror > Loading mirror speeds from cached hostfile > Installed Packages > xorg-x11-apps.x86_64 7.7-7.el7 > @Rocks-7.0 and do you have in ~/.ssh/ and an ssh key named "id_rsa" and is passwordless ? you should see in /var/log/slurm/slurmd.conf (on compute node) some errors at the time of your job. > > > The ssh config seems to be right > > > > Regards, > Mahmood > > > > > On Mon, Nov 19, 2018 at 3:27 PM Chris Samuel <ch...@csamuel.org > <mailto:ch...@csamuel.org>> wrote: > > On Sunday, 18 November 2018 4:24:08 AM AEDT Mahmood Naderan wrote: > > > >What does this command say? > > > > > >scontrol show config | fgrep PrologFlags > > > > [root@rocks7 ~]# scontrol show config | fgrep PrologFlags > > PrologFlags = Alloc,Contain,X11 > > > > That means x11 has been compiled in the code (while Werner > created the > > roll). > > No, that means that you've got the PrologFlags set in your > slurm.conf, I'm > afriad it doesn't mean Slurm is compiled with X11 support. > > > >Check your slurmd logs on the compute node. What errors are there? > > > > In one terminal, I run the following command > > > > [mahmood@rocks7 ~]$ srun --nodelist=compute-0-5 -n 1 -c 6 > --mem=8G -A y8 -p > > RUBY xclock > > Error: Can't open display :1 > > srun: error: compute-0-5: task 0: Exited with exit code 1 > > You forgot the --x11 flag to srun! > > Can you try again with that flag please? > > All the best, > Chris > -- > Chris Samuel : http://www.csamuel.org/ : Melbourne, VIC > > > > -- Olivier Sallou Univ Rennes, Inria, CNRS, IRISA Irisa, Campus de Beaulieu F-35042 RENNES - FRANCE Tel: 02.99.84.71.95 gpg key id: 4096R/326D8438 (keyring.debian.org) Key fingerprint = 5FB4 6F83 D3B9 5204 6335 D26D 78DC 68DB 326D 8438
