Users may have been experiencing job failures on Owens cluster since April 16, 2018
Extra 'pmlogger' messages during job startup and ending on Owens and Pitzer on March 11, 2019
Gaussian-4 (G4) theory calculations in Gaussian 16 Rev. B.01 can produce erratic results. A workaround is to use Gaussian 16 Rev. A.03:
module load gaussian/g16a03
Gaussian 16 Rev. A.03 has been made the default module on all clusters. A typical symtom is energy blow up in step 8 resulting in an unusually large, erroneous HF/GFHFB2 energy and consequently an incorrect G4 total energy.
We will perform the replacement work of Ethernet switches from 12pm to 3pm on Thursday, Jan 17, which includes all login nodes and 2 quick nodes on Owens. As a result, users won't be able to log into Owens at the beginning and end of the maintenance work, and won't be able to use Owens VDI through OnDemand during the entire maintenance window. Running jobs on Owens, as well as other OSC services (Pitzer, Ruby, and fileystems) won't be impacted.
Rolling reboots of Owens and Pitzer, starting from Tuesday, Jan 22, 2019
OSC will replace the Ethernet switches in the Owens cluster starting from Dec 14
Rolling reboots of all three clusters, starting from Tuesday, September 4, 2018
We will have rolling reboots of Owens and Ruby clusters starting from 8 AM Monday, August 6, 2018.
We've been having intermittent issues with connecting to the batch server hosts on Owens.
Rolling reboots of all clusters, starting from 8 AM Tuesday, June 19, 2018