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
The ssh config seems to be right Regards, Mahmood On Mon, Nov 19, 2018 at 3:27 PM Chris Samuel <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 > > > > >
