HPC2N
High Performance Computing Center North
After an update of the kernel, the Kebnekaise nodes failed to detect the lustre filesystem. Thus no jobs are running.
We are looking into the problem. Updates will follow in this news.
UPDATE: The problem should be solved and the nodes are back in production, and the jobs are again being scheduled.
t-mn02 was rebooted due to updates installed. During the approximately 10 minutes it took no new jobs could be submitted to Abisko.
Jobs already in the queue are not affected. This does not affect Kebnekaise.
Due to bugs in the compiler we are removing the following toolchains:
intel/2015b, intel/2016a, and intel/2016b
We are going to do a switchover to a new build, using intel/2017.01 instead of the above toolchains.
The switchover will be disruptive in sofar as all jobs using the old toolchains will fail.
This is unfortunate but necessary. However, since the machine is lightly loaded at the moment there should be no problem catching up on the production for everyone.
ITS will be running stress tests on the redundancy mechanisms in the Umeå University network between 20:00 and 22:00 on Thursday, 2016-10-27. This is done in preparation for connecting Umeå University to SunetC. (Information from ITS here, in Swedish.)
We are currently investigating problems with the parallell file system.
2016-10-20, 10:30. The parallel file system should be back to normal.
We are experiencing intermittent problems connecting to the Abisko login node. We are searching for the cause.
For now, if the Abisko login node (abisko.hpc2n.umu.se) hangs when you try to login, break the connection and try again.
This system news will be updated with more information when we have it.
Update 2016-10-18, 16:34. The network problem has been solved, and there should not be any problems logging in to Abisko any longer.
Matlab 2016b is now the default Matlab version on Abisko.
Some older version of Matlab is also available. Run 'module avail matlab' when logged in to Abisko to see the current list of available versions.
2016-10-04, 13:00
The /pfs/nobackup is currently down, we are working on fixing it.
This system news will be updated.
2016-10-04, 14:19
/pfs/nobackup is working again and the batch queues are running again.
A page for our new cluster "Kebnekaise" has been created. Not much information there yet, but more will follow soon.
The cluster is not yet open for use.
On September 6th between 08:00 and 17:00 we will perform some necessary software updates of the servers that deliver the /pfs/nobackup file system.
This means that the batch nodes of Abisko must be drained of jobs and the file system unmounted on all nodes, including the login node.
During days leading up to the maintenance window, the system will only accept to run shorter and shorter jobs. It is therefore benficial to submit jobs with short runtimes.
