<div dir="ltr">Here's some debug logs from the compute node after launching an interactive shell with the x11 flag. I see it show X11 forwarding established, then it ends with a connection timeout.<div><br></div><div><br></div><div>[2020-11-16T12:12:34.097] debug: Checking credential with 492 bytes of sig data<br>[2020-11-16T12:12:34.098] _run_prolog: run job script took usec=1284<br>[2020-11-16T12:12:34.098] _run_prolog: prolog with lock for job 30873 ran for 0 seconds<br>[2020-11-16T12:12:34.111] debug: AcctGatherEnergy NONE plugin loaded<br>[2020-11-16T12:12:34.112] debug: AcctGatherProfile NONE plugin loaded<br>[2020-11-16T12:12:34.113] debug: AcctGatherInterconnect NONE plugin loaded<br>[2020-11-16T12:12:34.114] debug: AcctGatherFilesystem NONE plugin loaded<br>[2020-11-16T12:12:34.115] debug: switch NONE plugin loaded<br>[2020-11-16T12:12:34.116] debug: init: Gres GPU plugin loaded<br>[2020-11-16T12:12:34.116] [30873.extern] debug: Job accounting gather LINUX plugin loaded<br>[2020-11-16T12:12:34.117] [30873.extern] debug: cont_id hasn't been set yet not running poll<br>[2020-11-16T12:12:34.117] [30873.extern] debug: Message thread started pid = 18771<br>[2020-11-16T12:12:34.119] [30873.extern] debug: task NONE plugin loaded<br>[2020-11-16T12:12:34.120] [30873.extern] Munge credential signature plugin loaded<br>[2020-11-16T12:12:34.121] [30873.extern] debug: job_container none plugin loaded<br>[2020-11-16T12:12:34.121] [30873.extern] debug: spank: opening plugin stack /apps/slurm/cluster/20.02.0/etc/plugstack.conf<br>[2020-11-16T12:12:34.121] [30873.extern] debug: X11Parameters: (null)<br>[2020-11-16T12:12:34.133] [30873.extern] X11 forwarding established on DISPLAY=cluster-cn02.domain:66.0<br>[2020-11-16T12:12:34.133] [30873.extern] debug: jag_common_poll_data: Task 0 pid 18775 ave_freq = 4023000 mem size/max 6750208/6750208 vmem size/max 147521536/147521536, disk read size/max (7200/7200), disk write size/max (374/374), time 0.000000(0+0) Energy tot/max 0/0 TotPower 0 MaxPower 0 MinPower 0<br>[2020-11-16T12:12:34.133] [30873.extern] debug: x11 forwarding local display is 66<br>[2020-11-16T12:12:34.133] [30873.extern] debug: x11 forwarding local xauthority is /tmp/.Xauthority-MkU8aA<br>[2020-11-16T12:12:34.202] launch task 30873.0 request from UID:1368 GID:512 HOST:172.21.150.10 PORT:4795<br>[2020-11-16T12:12:34.202] debug: Checking credential with 492 bytes of sig data<br>[2020-11-16T12:12:34.202] [30873.extern] debug: Handling REQUEST_X11_DISPLAY<br>[2020-11-16T12:12:34.202] [30873.extern] debug: Leaving _handle_get_x11_display<br>[2020-11-16T12:12:34.202] debug: Leaving stepd_get_x11_display<br>[2020-11-16T12:12:34.202] debug: Waiting for job 30873's prolog to complete<br>[2020-11-16T12:12:34.202] debug: Finished wait for job 30873's prolog to complete<br>[2020-11-16T12:12:34.213] debug: AcctGatherEnergy NONE plugin loaded<br>[2020-11-16T12:12:34.214] debug: AcctGatherProfile NONE plugin loaded<br>[2020-11-16T12:12:34.214] debug: AcctGatherInterconnect NONE plugin loaded<br>[2020-11-16T12:12:34.214] debug: AcctGatherFilesystem NONE plugin loaded<br>[2020-11-16T12:12:34.215] debug: switch NONE plugin loaded<br>[2020-11-16T12:12:34.215] debug: init: Gres GPU plugin loaded<br>[2020-11-16T12:12:34.216] [30873.0] debug: Job accounting gather LINUX plugin loaded<br>[2020-11-16T12:12:34.216] [30873.0] debug: cont_id hasn't been set yet not running poll<br>[2020-11-16T12:12:34.216] [30873.0] debug: Message thread started pid = 18781<br>[2020-11-16T12:12:34.216] debug: task_p_slurmd_reserve_resources: 30873 0<br>[2020-11-16T12:12:34.217] [30873.0] debug: task NONE plugin loaded<br>[2020-11-16T12:12:34.217] [30873.0] Munge credential signature plugin loaded<br>[2020-11-16T12:12:34.217] [30873.0] debug: job_container none plugin loaded<br>[2020-11-16T12:12:34.217] [30873.0] debug: mpi type = pmix<br>[2020-11-16T12:12:34.244] [30873.0] debug: spank: opening plugin stack /apps/slurm/cluster/20.02.0/etc/plugstack.conf<br>[2020-11-16T12:12:34.244] [30873.0] debug: mpi type = pmix<br>[2020-11-16T12:12:34.244] [30873.0] debug: (null) [0] mpi_pmix.c:153 [p_mpi_hook_slurmstepd_prefork] mpi/pmix: start<br>[2020-11-16T12:12:34.244] [30873.0] debug: mpi/pmix: setup sockets<br>[2020-11-16T12:12:34.273] [30873.0] debug: cluster-cn02 [0] pmixp_client_v2.c:69 [_errhandler_reg_callbk] mpi/pmix: Error handler registration callback is called with status=0, ref=0<br>[2020-11-16T12:12:34.273] [30873.0] debug: cluster-cn02 [0] pmixp_client.c:697 [pmixp_libpmix_job_set] mpi/pmix: task initialization<br>[2020-11-16T12:12:34.273] [30873.0] debug: cluster-cn02 [0] pmixp_agent.c:229 [_agent_thread] mpi/pmix: Start agent thread<br>[2020-11-16T12:12:34.273] [30873.0] debug: cluster-cn02 [0] pmixp_agent.c:330 [pmixp_agent_start] mpi/pmix: agent thread started: tid = 70366934331824<br>[2020-11-16T12:12:34.273] [30873.0] debug: cluster-cn02 [0] pmixp_agent.c:335 [pmixp_agent_start] mpi/pmix: timer thread started: tid = 70366933283248<br>[2020-11-16T12:12:34.273] [30873.0] debug: cluster-cn02 [0] pmixp_agent.c:267 [_pmix_timer_thread] mpi/pmix: Start timer thread<br>[2020-11-16T12:12:34.273] [30873.0] debug: stdin uses a pty object<br>[2020-11-16T12:12:34.274] [30873.0] debug: init pty size 34:159<br>[2020-11-16T12:12:34.274] [30873.0] in _window_manager<br>[2020-11-16T12:12:34.274] [30873.0] debug level = 2<br>[2020-11-16T12:12:34.274] [30873.0] debug: IO handler started pid=18781<br>[2020-11-16T12:12:34.275] [30873.0] starting 1 tasks<br>[2020-11-16T12:12:34.276] [30873.0] task 0 (18801) started 2020-11-16T12:12:34<br>[2020-11-16T12:12:34.276] [30873.0] debug: task_p_pre_launch_priv: 30873.0<br>[2020-11-16T12:12:34.288] [30873.0] debug: jag_common_poll_data: Task 0 pid 18801 ave_freq = 4023000 mem size/max 9961472/9961472 vmem size/max 512557056/512557056, disk read size/max (0/0), disk write size/max (0/0), time 0.000000(0+0) Energy tot/max 0/0 TotPower 0 MaxPower 0 MinPower 0<br>[2020-11-16T12:12:34.288] [30873.0] debug: Sending launch resp rc=0<br>[2020-11-16T12:12:34.288] [30873.0] debug: mpi type = pmix<br>[2020-11-16T12:12:34.288] [30873.0] debug: cluster-cn02 [0] mpi_pmix.c:180 [p_mpi_hook_slurmstepd_task] mpi/pmix: Patch environment for task 0<br>[2020-11-16T12:12:34.289] [30873.0] debug: task_p_pre_launch: 30873.0, task 0<br>[2020-11-16T12:12:39.475] [30873.extern] error: _x11_socket_read: slurm_open_msg_conn: Connection timed out<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Nov 16, 2020 at 11:50 AM Russell Jones <<a href="mailto:arjones85@gmail.com">arjones85@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hello,<div><br></div><div>Thanks for the reply! </div><div><br></div><div>We are using Slurm 20.02.0.</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Nov 16, 2020 at 10:59 AM sathish <<a href="mailto:sathish.sathishkumar@gmail.com" target="_blank">sathish.sathishkumar@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr">Hi Russell Jones, <div><span style="font-size:14px;letter-spacing:0.2px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif"><br></span></div><div><span style="font-size:14px;letter-spacing:0.2px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif">I </span>believe<span style="font-size:14px;letter-spacing:0.2px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif"> you are using a slurm version older than 19.05. X11 forwarding code has been revamped and it works as expected starting from the 19.05.0 version. </span><br></div><div><br></div><div><br></div></div><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Nov 16, 2020 at 10:02 PM Russell Jones <<a href="mailto:arjones85@gmail.com" target="_blank">arjones85@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hi all,<div><br></div><div>Hoping I can get pointed in the right direction here. <br><br>I have X11 forwarding enabled in Slurm, however I cannot seem to get it working properly. It works when I test with "ssh -Y" to the compute node from the login node, however when I try through Slurm the Display variable looks very different, and I get an error. Example below:</div><div><br></div><div>[user@cluster-1 ~]$ ssh -Y cluster-cn02<br>Last login: Mon Nov 16 10:09:18 2020 from 172.21.150.10<br>-bash-4.2$ env | grep -i display<br>DISPLAY=172.21.150.102:10.0<br>-bash-4.2$ xclock<br>Warning: Missing charsets in String to FontSet conversion<br>** Clock pops up and works **<br><br>[user@cluster-1 ~]$ srun -p cluster -w cluster-cn02 --x11 --pty bash -l<br>bash-4.2$ env | grep -i display<br>DISPLAY=localhost:28.0<br>bash-4.2$ xclock<br>Error: Can't open display: localhost:28.0<br></div><div><br></div><div><br></div><div>Any ideas on where to begin looking? I'm not sure why the display variable is being set to localhost instead of the login node.</div><div><br></div><div>Thanks!</div><div><br></div></div>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr">Regards.....<br>Sathish</div></div>
</blockquote></div>
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