NERSCPowering Scientific Discovery Since 1974

Move to CRT

During 2015, NERSC will be moving from the Oakland Scientific Facility (OSF) in downtown Oakland to a brand new building:  the Computational Research and Theory (CRT) facility, located at Lawrence Berkeley National Laboratory (LBNL).  Groundbreaking for the building took place on February 1, 2012, and construction is continuing.

The information on this page is still very preliminary, and subject to change as planning continues.

User Impact

NERSC will make every effort to minimize the user impact of this move.  We do not expect to shut down the Center completely at any point during the move.  However, there will be periods when some systems will be unavailable for several days.  There will also be times when available I/O bandwidth to various global file systems will be reduced for extended periods. 

The move will be performed in a series of phases spread over several months.  During the move, there will be extended periods where some resources are at OSF, and others are at CRT.  Communication between the two sites will be provided by a single 100 Gb/s network connection.  Thus, if you are running on a compute platform located at OSF, but performing I/O on a file system located at CRT, the available bandwidth will be reduced.


Edison will move to CRT.  Hopper and Carver will not move; both will be retired at OSF.  Carver will be retired September 30, 2015; Hopper will remain in service until Edison has resumed full production at CRT.  Cori, NERSC's next major system, will be installed at CRT in mid-2016.  NERSC will be acquiring a "Cori Phase 1" system in 2015 to bridge the gap between the retirement of Hopper and the arrival of Cori.

Some old Genepool hardware will be retired; some current Genepool hardware will be moved; some new Genepool hardware will be acquired.  The same is true for PDSF hardware.

All global file systems will be moved, in phases.  Both HPSS systems (user archive and system backup) will remain at OSF for at least one additional year, accessed via the 100 Gb/s network link.


At this time, exact dates of system outages are not known.  Once the building contractors have committed to a particular date when NERSC personnel can begin installing our network infrastructure, we will be able to provide more accurate estimates.  What is presented here is a month-by-month overview of move activities that will impact user access to NERSC systems and services.  We expect these activities to begin in April, 2015.

April 2015

/global/homes will be replicated and installed at CRT.  During the replication, available bandwidth will be reduced.  After installation, bandwidth between systems at OSF and /global/homes at CRT will be limited.  We do not expect any outage of /global/homes during this process.

/global/projectb, /global/dna/, and /global/seqfs (JGI file systems) will be replicated and installed at CRT.  During the replication, available bandwidth will be reduced.  After installation, bandwidth between systems at OSF and JGI file systems at CRT will be limited.  We expect a 2-day outage of JGI file systems during this process.

May 2015

Some PDSF file systems will be relocated to CRT.  This will result in about a week of outage for those file systems.

June 2015

A cluster with the internal name Mendel (provides resources to PDSF, JGI, and the Materials Project) will be moved.  There will be new compute components for PDSF and JGI already in place at CRT, so this will not be an outage; however, the total amount of available compute resources will be reduced during the move.  For the Materials Project, there will be an outage while Mendel is moved.

August 2015

Cori Phase 1 and associated file systems will be installed at CRT.

September 2015

Cori Phase 1 will become available to users.

Carver will retire on September 30, 2015.

/global/project will be replicated and installed at CRT.  Following this, a file system outage lasting a few days will be necessary to complete the migration of project data.

October 2015

Edison will begin move to CRT; relocation will result in about 6 weeks of downtime.

November 2015

Edison returns to service in its new home in CRT.

December 2015

Hopper retires.

June 2016

Cori Phase 2 delivered.

September 2016

Cori Phase 2 available to users.