{"is":"issue","title":"Two Planned Grex outages for HPCC transformer work","body":"\u003ch4 id=\"both-power-outages-are-now-complete\"\u003eBoth power outages are now complete\u003c/h4\u003e\n\u003cp\u003eGrex system is open to the users. Queued jobs were not affected and seems to be running now.\nThere were no major upgrades or changes done during the outage.\u003c/p\u003e\n\u003ch4 id=\"planned-grex-power-outages-in-september-2023\"\u003ePlanned Grex power outages in September 2023\u003c/h4\u003e\n\u003cp\u003eThe Physical Plant is about to perform some electrical works on the transformer that feeds, amongst other things on campus, the HPCC data center that hosts Grex. The outage will start for 6 PM on September 12 and September 19. These outages would require a complete power shutdown in HPCC for about an hour, which means the system would be completely inaccessible to the users, and all running jobs would be terminated.\u003c/p\u003e\n\u003cp\u003eTo avoid the failure of jobs, we have made two reservations to avoid any longer jobs (that cannot be finished before the beginning of the outage) from starting. For more information, run the following command from any login node: \u0026ldquo;scontrol show res\u0026rdquo;.    To take advantage of the cluster before, and between, the outages, we recommend users submit short jobs that can finish by the time the upcoming outage begins.\u003c/p\u003e\n\u003cp\u003eThank you for your patience! Should you have questions or concerns, please do not hesitate to contact us at \u003ca href=\"mailto:support@tech.alliancecan.ca\"\u003esupport@tech.alliancecan.ca\u003c/a\u003e !\u003c/p\u003e\n","createdAt":"2023-09-12 18:00:00 +0000 UTC","lastMod":"2023-09-12 18:00:00 +0000 UTC","permalink":"https://um-grex.github.io/status/issues/2023-09-12_18-planned-grex-outages/","severity":"down","resolved":true,"informational":false,"resolvedAt":"2023-09-19 21:00:00","affected":["Login nodes","Compute Nodes","Lustre /global/scratch","NFS /home","Network"],"filename":"2023-09-12_18-planned-Grex-outages.md"}