We are currently experiencing some instability that causes jobs to be prematurely terminated. We are working on a solution.

We are experiencing intermittent issues with the storage system on Bitten, resulting in periodic issues when accessing files on the system. We are working on resolving the problem.

Around 5.30 this morning, the entire Bitten system rebooted. Around one hour later, all services were back up and running again.

While rolling out an update to UCloud, we experienced some issues that made it impossible to access files and jobs.

We experienced problems with network traffic to the Bitten cluster during the evening. The problem has been localized and traffic should be working again.

We are rolling out important patches on the system, which requires all machines to be rebooted. Running jobs will be terminated.

We are rolling out important security patches on the system, which requires all machines to be rebooted. Running jobs will be terminated.

We are updating the SDU eScience Center servicedesk so it is currently unavailable.

The Bitten system is currently unavailable. During the night a transformer station in Aabenraa exploded and caused widespread problems for the surrounding power grid, including our data center. There has been no loss of data, but we are keeping the system offline during the weekend to assess the status and potential damages.

Around 5:30 this morning all machines at the Bitten provider were unexpectedly rebooted. We are working on bringing systems back online.

We are currently experiencing issues with the SDU eScience Servicedesk. Tickets submitted via the UCloud support form and the SDU eScience support email are not reaching the Servicedesk. Longer response times are to be expected for now. It is still possible to open and reply to tickets, but only directly via support.escience.sdu.dk.

We have scheduled an extraordinary maintenance window with short notice, because we need to rollout some important changes to the system. All compute nodes will be rebooted during the maintenance window and they might be unavailable for up to two hours. All running jobs will be terminated.

Our ISP has announced a maintenance window on Friday (May 8th) that very likely will disrupt our internet connection to Bitten.

SDU is currently experiencing a power loss, which is also affecting services in our data center. This is also affecting the storage system at Bitten, which cannot talk to the second tier at the SDU site.

We are experiencing some stability issues with the new cpu-amd-zen5 machines. As a result, they sometimes need to be rebooted, affecting all jobs running on the node. We are working on finding a solution.

We temporarily lost our internet connection to the new data center. The problem has been identified by the ISP and we are waiting for them to solve it.

We are moving the UCloud platform to a new data center and this will require extended downtime. Downtime will start on Monday, April 27th, and continue for up to one week. The system is expected to be back online Monday, May 4th, at the latest.

Unfortunately we have had to terminate background tasks (file transfers and copy operations). This was needed to deploy an updated which should improve the stability of the same feature. The background tasks have to be resubmitted to continue. We apologize for the inconvenience.

UCloud was down from 01:00 until 08:55 due to a bug in the UCloud code. We have temporarily disabled the broken code and are working on deploying a permanent fix. UCloud is expected to work normally while we work on a fix.

After an update of the Nvidia drivers we are now experiencing problems with the Nvidia H100 (u3-gpu) machines. We will start downgrading the drivers again next week to restore full functionality.

We are aware of an issue causing public IPs to not correctly be attached to machines. We are working on a fix.

UPDATE: This maintenance window has been expanded and it now covers ALL services offered by SDU eScience.

We will be performing maintenance on January the 28th between 12:00 and 20:00. UCloud will be down during this period and jobs on SDU/K8s and AAU/K8s will be terminated at the start of the maintenance window.

On December 1st there will be scheduled maintenance in the SDU data center, which requires a complete shutdown of all servers. For this reason UCloud and all other services offered by SDU eScience will be unavailable during the entire working today. We expect systems to be back online late in the afternoon.

The u2-gpu machines are currently experiencing hardware problems. User jobs are able to run, but they can be killed at any point due to maintenance.

UCloud is currently experiencing issues, we are working on fixing the problem.

During the night UCloud had an internal issue, which made it impossible to access jobs and files.

UCloud has been updated with the latest round of bug fixes and improvements to the UI. As always, this may have caused a few minutes of disruption to the service. Sorry for the inconvenience.

On Sunday, October 26th, several UCloud jobs that have been running for more than 14 days will be terminated due to hardware maintenance.

The SDU/K8s provider was unavailable between 12/10/25 15:56:34 and 12/10/25 17:04:25 due to a software bug. A bug fix has been released now (13/10/25 07:00).

UCloud is being restarted for an update. The update will take a few minutes.

Two of the H100 nodes were rebooted this morning due to hardware maintenance, the first one around 9.00 and the second one around 10.30 A couple of jobs where stopped during the reboot.

Around 8:50 this morning we started decommissioning an old storage system, which unfortunately affects the SDU/K8s compute nodes, making them partially unresponsive.

A fluctuation in the power grid caused around 30 machines to reboot in the UCloud server room. Jobs running on the machines were terminated during the reboot.

The machine 'nodea0-19' has been rebooted due to an error with one of the GPU cards. We are monitoring the node for a potential hardware issue.

Between 00:21 and 08:00 UCloud was running with elevated error rates causing the job page to not load correctly. The issue has been resolved.