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ARC status:
Cluster operational
System is operational. No updates are planned.
See the ARC Cluster Status page for system notices.
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System Messages
Systems Operating Normally - 2024/09/03
The ARC Cluster and the Altis login node is operational. No upcoming upgrades are planned.
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2024/09/03
--- Systems Operating Normally
The ARC Cluster and the Altis login node is operational. No upcoming upgrades are planned.
Notice of Upcoming Partial Outage - 2024/08/27
Several compute nodes from the ARC cluster will be unavailable
between Sept 23 to Sept 27 inclusive (subject to change). Some Altis GPU nodes will be affected during this maintenance window. These nodes will return to service as soon as the work is complete.
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2024/08/27
--- Notice of Upcoming Partial Outage
Several compute nodes from the ARC cluster will be unavailable
between Sept 23 to Sept 27 inclusive (subject to change). Some Altis GPU nodes will be affected during this maintenance window. These nodes will return to service as soon as the work is complete.
Partial Outage Update I - 2024/09/25
Due to hardware issues that is blocking our original maintenance window, most compute nodes that were taken offline on Monday has been brought back online today. An additional partial outage will occur again starting next Tuesday for the same nodes.
On Tuesday, October 1, 2024, the compute nodes in cpu2019, cpu2021, cpu2022, gpu-v100, gpu-a100, and most nodes from bigmem will be unavailable until Friday October 4, 2024. Affected WDF-Altis GPU nodes include: wdfgpu[1-2,6,8-12].
We apologise for the inconvenience.
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2024/09/25
--- Partial Outage Update I
Due to hardware issues that is blocking our original maintenance window, most compute nodes that were taken offline on Monday has been brought back online today. An additional partial outage will occur again starting next Tuesday for the same nodes.
On Tuesday, October 1, 2024, the compute nodes in cpu2019, cpu2021, cpu2022, gpu-v100, gpu-a100, and most nodes from bigmem will be unavailable until Friday October 4, 2024. Affected WDF-Altis GPU nodes include: wdfgpu[1-2,6,8-12].
We apologise for the inconvenience.
Partial Outage Update II - 2024/10/04
The maintenance window will be extended until at least Monday, October 7, 2024 due to a power distribution issue in our renovated data centre.
Currently, the compute nodes in cpu2019, cpu2021, cpu2022, gpu-v100, gpu-a100, and most nodes from bigmem will be unavailable until at least Monday, October 7, 2024. Affected WDF-Altis GPU nodes include: wdfgpu[1-2,6,8-12].
We apologize for the extended downtime and will update you as soon as we have additional information from our operations team.
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2024/10/04
--- Partial Outage Update II
The maintenance window will be extended until at least Monday, October 7, 2024 due to a power distribution issue in our renovated data centre.
Currently, the compute nodes in cpu2019, cpu2021, cpu2022, gpu-v100, gpu-a100, and most nodes from bigmem will be unavailable until at least Monday, October 7, 2024. Affected WDF-Altis GPU nodes include: wdfgpu[1-2,6,8-12].
We apologize for the extended downtime and will update you as soon as we have additional information from our operations team.
Partial Outage Update III - 2024/10/07
Due to technical issues beyond our control the maintenance window will be extended until at least Tuesday, October 15, 2024.
Currently, the compute nodes in cpu2019, cpu2021, cpu2022, gpu-v100, gpu-a100, and most nodes from bigmem will be unavailable until at least Tuesday, October 15, 2024. Affected WDF-Altis GPU nodes include: wdfgpu[1-2,6,8-12].
We apologize for the extended downtime and will update you as soon as we have additional information from our operations team.
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2024/10/07
--- Partial Outage Update III
Due to technical issues beyond our control the maintenance window will be extended until at least Tuesday, October 15, 2024.
Currently, the compute nodes in cpu2019, cpu2021, cpu2022, gpu-v100, gpu-a100, and most nodes from bigmem will be unavailable until at least Tuesday, October 15, 2024. Affected WDF-Altis GPU nodes include: wdfgpu[1-2,6,8-12].
We apologize for the extended downtime and will update you as soon as we have additional information from our operations team.
Normal Scheduling has resumed. - 2024/10/08
The ARC cluster has been successfully brought online and nodes are running jobs normally. We apologize for the extended downtime.
Please reach out to support@hpc.ucalgary.ca with any issues or concerns.
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2024/10/08
--- Normal Scheduling has resumed.
The ARC cluster has been successfully brought online and nodes are running jobs normally. We apologize for the extended downtime.
Please reach out to support@hpc.ucalgary.ca with any issues or concerns.