Wall-time Accuracy Information
Due to current usage patterns on OSC's Owens Cluster, users may benefit from improving the wall-time accuracy of their submitted jobs.
Owens
Scratch Filesystem Errors Resolved
We have resolved a problem with the Scratch filesystem that gives errors "No space left on device".
The cause is that the metadata subsystem is pretty full. The outage was caused be the rapid exhaustion of metadata storage space, the reason for the spike in metadata space utilization is unknown. The scratch filesystem has been returned to service after we worked with the vendor to implement a temporary workaround.
We are working with the vendor to find the root cause and a permanent fix for the underlying problem. We apologize for any inconvenience this may cause.
Gaussian g16c01 available on Owens
Date:
Wednesday, September 25, 2019 - 2:15pm
System(s):
Gaussian g16c01 version has been installed on Owens.
HOW TO: Look at requested time accuracy using XDMoD
The XDMoD tool at xdmod.osc.edu can be used to get an overview of how accurate the requested time of jobs are with the elapsed time of jobs.
To request an amount of time for a job, you can use the following header.
#SBATCH --time=xx:xx:xx
The elapsed time is how long the job ran for before completing. This can be obtained for completed jobs using the sacct command.
Blast updated database
Date:
Friday, September 13, 2019 - 2:00pm
System(s):
Updated Blast database module is now avaialbe as blast-databse/2019-09
System Downtime October 8, 2019
A downtime for all HPC systems is scheduled from 7 a.m. to 5 p.m., Tuesday, October 8, 2019. The downtime will affect the Pitzer, Ruby and Owens Clusters, web portals, and HPC file servers. Login services, including my.osc.edu, access to storage and license server for hyperworks hosted by OSC will not be available during this time.
In preparation for the downtime, the batch scheduler will begin holding jobs that cannot be completed before 7 a.m., October 8, 2019.
Negative Balance Policy Effective Oct. 1
Updated negative balance policy to be implemented on October 1. See https://www.osc.edu/resources/technical_support/supercomputing-policies for more details. Contact oschelp@osc.edu with questions.
STAR-CCM 14.04.013 available on Owens
Date:
Thursday, August 8, 2019 - 11:30am
System(s):
STAR-CCM 14.04.013 is available on Owens.
module load starccm/14.04.013
module load starccm/14.04.013-mixed
LAMMPS 5Jun19 is available
LAMMPS stable version 5Jun19 has been installed with MVAPICH2, OpenMPI, and IntelMPI on Owens and Pitzer. These are GPU enabled installations. Usage is via the module lammps/5Jun19. For installation details, such as, available packages and example batch scripts, use command: "module help lammps/5Jun19". For help loading an installation, use command: "module spider lammps/5Jun19".
