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.
Pitzer
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.
QGIS
QGIS is a user friendly Open Source Geographic Information System (GIS) licensed under the GNU General Public License. QGIS is an official project of the Open Source Geospatial Foundation (OSGeo). It runs on Linux, Unix, Mac OSX, Windows and Android and supports numerous vector, raster, and database formats and functionalities.
Availability and Restrictions
Versions
The following versions of QGIS are available on OSC clusters:
Gaussian
Gaussian is a very popular general purpose electronic structure program. Recent versions can perform density functional theory, Hartree-Fock, Möller-Plesset, coupled-cluster, and configuration interaction calculations among others. Geometry optimizations, vibrational frequencies, magnetic properties, and solution modeling are available. It performs well as black-box software on closed-shell ground state systems.
Gaussian g16c01 available on Pitzer
Date:
Wednesday, September 25, 2019 - 2:15pm
System(s):
Gaussian g16c01 version has been installed on Pitzer.
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.
One way of specifying a time request is:
#SBATCH --time=xx:xx:xx
The elapsed time is how long the job ran for before completing. This can be obtained using the sacct command.
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.
OpenFOAM v1906 available on Pitzer
Date:
Monday, September 9, 2019 - 1:45pm
System(s):
OpenFOAM v1906 has been installed on the Pitzer cluster.
OpenFOAM 7.0 available on Pitzer
Date:
Monday, September 9, 2019 - 1:45pm
System(s):
OpenFOAM 7.0 has been installed on the Pitzer cluster.
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.
