We will need to carry out an emergency reboot after 13:00 o'clock today. Please save your work and log out from Hexagon by 13:00 o'clock.
More information to come later.
Update 13:59 2016-11-04: Access to the system is stopped and jobs has been terminated. Please accept our apologies for the inconveniences caused by the system reboot.
Update 16:05 2016-11-04: Security patches have been applied. Hexagon is back online again.
Author Archives: Lóránd Szentannai
Hexagon: high speed network down
Hexagon is down because the high speed network went down. We are working to get the issue fixed and boot the machine.
Update: 2016-09-28 22:45 System is up again.
Update: 2016-09-28 22:45 System is up again.
Grunch: Lustre filesystems offline on October 18th
/work and /work-common filesystems will be unavailable on Grunch on 18th of October starting from 09:00 o'clock. This downtime is part of the scheduled maintenance advertised at
http://syslog.hpc.uib.no/2016/09/21/hexagon-planned-maintenance-18-10-19-10/.
Length of downtime is up to 8 hours for /work-common and up to 2 days for /work.
Please make sure that by this time there are no jobs using /work or /work-common, to avoid data-loss and/or data corruption.
We will keep you updated here.
Update: 2016-10-19 11:07 /work-common is back online and re-mounted on grunch.
http://syslog.hpc.uib.no/2016/09/21/hexagon-planned-maintenance-18-10-19-10/.
Length of downtime is up to 8 hours for /work-common and up to 2 days for /work.
Please make sure that by this time there are no jobs using /work or /work-common, to avoid data-loss and/or data corruption.
We will keep you updated here.
Update: 2016-10-19 11:07 /work-common is back online and re-mounted on grunch.
Hexagon: planned maintenance 18.10 – 19.10
We will have a two day planned maintenance on hexagon starting on 18th of October 09:00.
During the maintenance we will carry out filesystem upgrade, firmware upgrades as well service the hardware.The job submission system has reservation in place, thus jobs which are not able to finish before maintenance start, will not be started.
Update: 2016-10-18 09:35 Maintenance has started, slightly delayed due to traffic jam.
Update: 2016-10-19 12:00 Maintenance has been finished, Hexagon is up and accessible again.
/work-common storage capacity extended
We have added additional 74TB storage capacity to /work-common.
NOTUR: Call for proposals 2016.2
The deadline for applying for NOTUR applications for period 2016.2 is 26th of August 2016. Please see https://www.sigma2.no/content/call-e-infrastructure-resources-20162 for more information.
Hexagon: login1 rebooted
Login node login1 ran out of memory and had to be rebooted.
The following jobs have been affected: 1890515, 1890671, 1891136, 1891264, 1891269, 1891328, 1891105, 1891385.
The following jobs have been affected: 1890515, 1890671, 1891136, 1891264, 1891269, 1891328, 1891105, 1891385.
DSA type SSH keys deprecated
DSA type SSH keys are considered unsafe and will be deprecated on UiB's HPC resources starting with 28th of June 2016. Therefore, we kindly ask you to check your SSH keys and replace DSA type keys with RSA type keys.
You may use the "ssh-keygen -t rsa" command to generate RSA type keys. For more options please see the manpage of ssh-keygen command.
Hexagon: SSH server upgraded
We have upgraded the SSH server on hexagon to address some security issues.
If you can not log in anymore using your SSH key, but only password, please check the content of ~/.ssh/authorized_keys file for entries like from="myhost.example.com" and change the hostname to IP address. Starting with this version only IP addresses and not host names may be used in the authorized_keys file.
Edit: authorized_keys file provides fine tuning for client access. If you would like to find out more about it, you may read sshd(8) man pages.
DSA key types are not considered safe anymore and we will phase them out soon. A new syslog entry will be added in the following days with more information about it.
If you can not log in anymore using your SSH key, but only password, please check the content of ~/.ssh/authorized_keys file for entries like from="myhost.example.com" and change the hostname to IP address. Starting with this version only IP addresses and not host names may be used in the authorized_keys file.
Edit: authorized_keys file provides fine tuning for client access. If you would like to find out more about it, you may read sshd(8) man pages.
DSA key types are not considered safe anymore and we will phase them out soon. A new syslog entry will be added in the following days with more information about it.
Hexagon: new Intel compiler
Intel compiler version 16.0.3 was installed on hexagon. This is a replacement for version 16.0.1.
List of enhancements and changes are available at https://software.intel.com/en-us/articles/intel-parallel-studio-xe-2016-update-3-readme.
List of enhancements and changes are available at https://software.intel.com/en-us/articles/intel-parallel-studio-xe-2016-update-3-readme.