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July 23th, 2021, 9:00 AM : Security update: Due to a severe vulnerability in the Linux kernel (CVE-2021-33909), our team is currently patching and rebooting all login nodes and compute nodes, as well as the JupyterHub. There should be no affect on running jobs, however sessions on login and datamover nodes will be disrupted. July 20th, 2021, 7:00 PM : SLURM configuration - Changed the default behaviour to kill a job step if any task exits with a non-zero exit code. If your code is able to handle failures gracefully, please add srun's option --no-kill to recover the previous default behaviour. July 20th, 2021, 7:00 PM : Maintenance finished, systems are back online. SciNet Downtime July 20th, 2021 (Tuesday): There will be a maintenance shutdown of the SciNet data center on Tuesday July 20th, starting at 7 am EDT. There will be no access to any of the SciNet systems (Niagara, Mist, HPSS, Teach cluster, or the file systems) during this time. We expect to be able to bring the systems back online in the evening of July 20th. The status of the Niagara cluster can be checked on status.computecanada.ca. For up-to-date and more detailed information on the status of all the SciNet systems, you can always check back here. June 28th, 2021, 4:06 PM: Mist OS upgrade is complete. May 27, 2021: Datamovers addresses have changed to improve high bandwidth connectivity and cybersecurity. The new addresses are 142.1.174.227 for nia-datamover1.scinet.utoronto.ca, and 142.1.174.228 for nia-datamover2.scinet.utoronto.ca. If you have jobs that need to connect to a software license server using an ssh tunnel through nia-gw (which actually resolves to datamover1 or datamover2), you may need to ask the system administrators of that license server to allow incoming connections from the new addresses above.
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