Author Archives: Mark Miller

COVID-19 Information for the JHPCE cluster

Dear JHPCE community, In the wake of the recent JHU announcements regarding COVID-19, we would like address concerns raised regarding the JHPCE cluster. Operationally there will be no changes for the JHPCE cluster. The JHPCE management and administrative personnel will … Continue reading

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JHPCE cluster maintenance – Friday, Dec 27th from 7:00 AM to 5:00 PM

On Friday, Dec. 27th from 7:00 AM to 5:00 PM we will be taking the JHPCE cluster offline for maintenance.  This downtime is necessary for the following reasons: Power work will be performed in the Bayview datacenter, which could cause disruption … Continue reading

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JHPCE Cluster Upgrade – August 26 – 28

Dear JHPCE Community, We are planning on taking the JHPCE cluster offline from August 26th – 28th in order to upgrade the nodes from their current Redhat 6.9 environment to Centos 7.6.  As part of the upgrade process, we have set … Continue reading

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Upcoming JHPCE cluster downtime – Aug 24 – Aug 29 – for power work at Bayview datacenter

The JHPCE cluster will be unavailable beginning at 5:00 PM on Friday August 24, and will be available at 5:00 PM on Wednesday, August 29th. The downtime is needed for the installation of a new backup generator at the MARCC/Bayview … Continue reading

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JHPCE cluster unavailable from 6:00 AM on Monday, January 22nd until 5:00 PM on Wednesday, January 24th for power work

Dear JHPCE Community, Please be advised that the JHPCE cluster will be unavailable starting at 6:00 AM on Monday, January 22nd and will not be available until 5:00 PM on Wednesday, January 24th for power work and network maintenance scheduled … Continue reading

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Upcoming patching on the JHPCE cluster – August 2017

During the early part of August, we will be installing system and security patches across all of the nodes on the JHPCE cluster.  The upgrades will be done in a rolling manner so as to minimize the impact of this … Continue reading

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Memory usage on the JHPCE cluster, and availability of the “gedit” editor

Dear JHPCE community, As part of our continuing efforts to more efficiently utilize RAM on the JHPCE cluster, we will be making a couple of changes to the current cluster configuration.  Our analysis of jobs run over the last year … Continue reading

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Upcoming JHPCE downtime for power work – April 25 – 27

The JHPCE cluster will be unavailable from 5:00 AM on Tuesday, April 25th to 5:00 PM on Thursday, April 27th for planned power work that will be performed at the Bayview/MARCC facility. Please schedule your jobs accordingly. Sorry for this … Continue reading

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Maintenance on DCS01 Thursday, December 29th from 8:00 AM – 5:00 PM

The DCS01 Storage Array will be offline this Thursday, December 29th, starting at 8:00 AM for system maintenance.  Please schedule your jobs accordingly.  We may need to forcibly terminate any jobs that we find using any storage in the /dcs01 … Continue reading

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Availability of RStudio on the JHPCE cluster

We recently installed the RStudio graphical R Integrated Development Environment (IDE) on the JHPCE cluster. Some people find the RStudio program helpful in organizing R projects, and writing and debugging R programs.  For more detailed instructions on using RStudio, please … Continue reading

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