[Supercomputer] Service Suspension for Login Nodes and Application Servers
We have service for the login nodes and application servers, which will be suspended on the following dates:
| Login Nodes to be under maintenance | Date and Time |
|---|---|
| All login nodes Open OnDemand Application Server Jupyter Hub | From 5:00 p.m on July 10 (Fri) to the end date is * For some login nodes, service will resume for the time being, limited to “9:00 a.m. to 5:00 p.m. on weekdays.” (Updated July 13 at noon.) * We have removed some time limits on login nodes. (Updated July 14 at 5:20 p.m.) * We have posted the schedule for the temporary maintenance.(Updated July 15 at 3:13 p.m.) * We have completed the temporary maintenance.(Updated July 16 at 4:42 p.m.) |
Please note that any SSH connections already established to the login node, as well as any jobs currently running on the compute nodes, will continue to function normally.
Thank you for your understanding and cooperation in advance.
(Update: July 13, 2026, noon)
Starting at noon on Monday, July 13, we will resume operation of some login nodes on a limited basis, from 9:00 AM to 5:00 PM on weekdays.
Please note that all sessions will be terminated at 5:00 PM on weekdays.
Job execution will continue to operate 24 hours a day.
The available login nodes are as follows:
| System A | camphor.kudpc.kyoto-u.ac.jp camphor32.kudpc.kyoto-u.ac.jp |
| System B | laurel.kudpc.kyoto-u.ac.jp laurel32.kudpc.kyoto-u.ac.jp |
| System C | cinnamon.kudpc.kyoto-u.ac.jp cinnamon32.kudpc.kyoto-u.ac.jp |
| System G | gardenia.kudpc.kyoto-u.ac.jp gardenia12.kudpc.kyoto-u.ac.jp |
* Please note that we will continue to suspend services for the Visualization Server, JupyterHub, and Open onDemand.
(Update: July 14, 2026, 5:20 p.m.)
We previously announced that we would resume operation of the login nodes starting at noon on Monday, July 13, with hours limited to “9:00 AM to 5:00 PM on weekdays.”
However, since the necessary system adjustments have been completed, we are lifting the time restrictions effective today and resuming normal 24-hour operation.
Accordingly, the “mandatory session termination at 5:00 PM on weekdays” that we previously announced will no longer be enforced starting today.
Users who are currently logged in may continue using the service as usual.
Please note that there are no changes to the available login nodes.
We apologize for the significant inconvenience caused during the restricted period. We sincerely appreciate your understanding and cooperation.
* Please note that we will continue to suspend services for the Visualization Server, JupyterHub, and Open onDemand.
(Update: July 15, 2026, 3:13 p.m.)
Currently, services on some login nodes and application servers have been suspended, but we plan to perform temporary maintenance according to the schedule below and resume normal operations.
Scheduled Restoration of Currently Down Servers
Login Nodes to be under maintenance Estimated Time of Restoration camphor31, laurel31, laurel33, cinnamon31,cinnamon33
gardenia11, gardenia13, gardenia14,
Open OnDemand,Visualization Server（gp-0004）, Application Server7:00 p.m. on July 15 (Wed)
→Service was restored at 7:15 p.m. on ,July 15 (Wed)Scheduled Temporary Maintenance
Login Nodes to be under maintenance Date and Time camphor32, laurel32, cinnamon32
gardenia12, JupyterHub, Visualization Server（gp-0004）From 9:00 a.m. to 4:00.p.m. on July 16 (Thu)
→Service was restored at 4:42 p.m. on ,July 16 (Thu)
Since login nodes undergo maintenance in sequence, you can continue to use other login nodes even during maintenance.
However, please note that any sessions currently logged in to a node undergoing maintenance will be disconnected when maintenance begins.
You can check the name of the node you are currently logged into using the “hostname” command.
We apologize for any inconvenience this may cause and appreciate your understanding and cooperation.
| Inquiry |
Use of Computer and Terminals (Supercomputer) Contact us |
|---|---|
Tag/Service