Cori Timeline

This page records a brief timeline of significant events and user environment changes on Cori (in reverse chronological order). Please also refer to the detailed history of Cori PE software default versions.

Jan 14, 2020 (planned)

SW default change to CDT 19.11 after scheduled maintenance at the Allocation Year Rollover. Please see the detailed list here.

Dec 5-6, 2019 (planned)

OS upgrade from CLE7.0UP00 to CLE7.0UP01.

Programming Environment changes include new software available (CDT/19.011) after scheduled maintenance. Detailed lists can be found here.

Sept 10-12, 2019

Lustre file system (ClusterStor) upgrade from NEO2 to NEO3.1.

Jul 29, 2019

Large jobs discount for job use 1,024 or more KNL nodes increased from 40% to 50%.

Jul 26-30, 2019

NERSC power upgrade, Cori OS upgrade from CLE6.0UP07 to CLE7.0UP00.

Slurm upgrade from 18.08 to 19.05.

Programming Environment changes include new default versions (CDT/19.03, intel/19.0.3.199), old software removals (CDT/18.03, CDT/18.09, CDT/18.12), and new software available (CDT/19.06). Also, craype-hugepages2M is loaded by default. Detailed lists can be found here.

Jun 10, 2019

"flex" QOS jobs discount decreased from 100% (i.e., free) to 75%.
"low" QOS jobs discount decreased from 50% to 25%.

Apr 23, 2019

Added "flex" QOS for Cori KNL, and free of charge.

Apr 10, 2019

Programming Environment changes include old software removals (CDT/17.09), and new software available (CDT/19.03 and intel/19.0.3.199) after scheduled maintenance. Detailed lists can be found here.

Mar 14, 2019

Large jobs discount for job use 1,024 or more KNL nodes increased from 20\% to 40\%.

Feb 13, 2019

Added "low" QOS for Cori KNL.

Jan 8, 2019

Programming Environment changes include new default versions (CDT/18.12), old software removals (CDT/18.06), and new software available (CDT/18.12) after scheduled maintenance at the Allocation Year Rollover. Detailed lists can be found here.

New charge factors for Haswell (90, increase from 80) and KNL (90, decrease from 96).

Oct 17, 2018

Slurm upgrade from 17.11 to 18.08.

Sept 19, 2018

OS upgrade from CLE6.0UP05 to CLE6.0UP07.

Programming Environment changes include old software removals (CDT/17.12), and new software available (CDT/18.09 and intel/18.0.3.222) after scheduled maintenance. Detailed lists can be found here.

Jul 11, 2018

Programming Environment changes include new default versions (CDT/18.03), old software removals (CDT/17.06), and new software available (CDT/18.06) after scheduled maintenance. Detailed lists can be found here.

May 8-9, 2018

OS upgrade from CLE6.0UP04 to CLE6.0UP05.

VTune default change to 2018.up2.

Jan 9, 2018

Slurm upgrade from 17.02 to 17.11. Users need only specify a QOS in batch scripts instead of a partition.

Intel default version changed from 18.0.0.128 to 18.0.1.163. SW default change to CDT 17.09 after scheduled maintenance. Please see the detailed list here.

Nov 7, 2017

Cori accepted.

Oct 6-9, 2017

Maintenance on the EPO (Emergency Power Off) and water system for the large systems.

Intel default version changed from 17.0.2.174 to 18.0.0.128.

Aug 8-10, 2017

OS upgrade from CLE6.0UP03 to CLE6.0UP04.

SW default change to CDT 17.06 after scheduled maintenance. Please see the detailed list here.

Jul 1, 2017

Charging on Cori KNL begins. Large Jobs using 1,024 or more KNL nodes receive 20\% charging discount.

May 30, 2017

All users are enabled on Cori KNL without restriction.

Apr 18 - Apr 21, 2017

Two new Haswell cabinets (384 compute nodes) added to the system. The new total number of Haswell nodes becomes 2,388. The total number of all nodes (2,388 Haswell plus 9,688 KNL) on Cori becomes 12,076.

Mar 22 - Mar 24, 2017

OS upgrade from CLE6.0UP01 to CLE6.0UP03.
Software default changes: vtune from 2017.up01 to 2017.up02; perftools from 6.4.2 to 6.4.6.

Mar 16, 2017

In order to work around an Intel compiler bug in versions 17.0.1.132 and 17.0.2.144, the default setting of Fortran buffered IO is turned off, i.e.,(the environment variable of FORT_BUFFERED=1 has been removed.

Feb 28 - Mar 3, 2017

Two new KNL cabinets (384 compute nodes) added to the system. The new total number of KNL nodes becomes 9,688. Slurm updated from version 16.05 to 17.02.

Feb 6, 2017

Selected users' Cori scratch directories now managed by new Meta Data Servers.

Jan 30, 2017

Cori scratch is mounted on NERSC Data Transfer Nodes (DTNs) to allow fast data moving between NERSC and other facilities.

Dec 20, 2016

All users have access to Cori KNL.
Intel compiler default version changed from 16.0.3.210 to 17.0.1.132.

Nov 2016

Cori KNL access for NESAP teams.

Nov 19, 2016

SW default change to CDT 16.10 after scheduled maintenance. Please see the detailed list here.

Sept 19 - Oct 31, 2016

Cori Haswell and KNL cabinets integration. Haswell nodes returned to users on Oct 31.

Running jobs changed for getting optimal process and thread affinity. Use sun "-c" and "--cpu_bind=cores" when needed. Also enforce "-C haswell" to requrest Haswell nodes.

Jul 20, 2016

Cori $SCRATCH is available as $CSCRATCH on Cori and Edison.

Jul 2016

Cori KNL cabinets arrival. First cabinets arrived on July 13.

Jul 4, 2016

Introduced SLURM file license features.

Jun 13 - 30, 2016

OS upgrade to Rhine/Redwood (CLE6) to prepare for KNL arrival.

SW default change to CDT 16.06 after CRT power outage. Please see the detailed list here.

May 20, 2016

Burst Buffer on Cori Phase 1 accepted.

May 11, 2016

CUG Best Paper Award for Burst Buffer Early User Program

May 9, 2016

"long" (1 node, 96-hr) job QOS available.

Mar 1, 2016

Scratch file system regular purge started.

Mar 21, 2016

Cori Phase 1 compute nodes accepted.

Feb 27, 2016

SW default change to CDT 16.01 after CRT power outage. Please see the detailed list here.

Jan 12, 2016

New allocation year AY16 starts. Cori usage starts charging. New SSH Key Authentication Mechanism became mandatory.

Dec 4, 2015

"realtime" partition enabled.

Nov 17, 2015

SSH host key changed to use 4096-bit new RSA key. Host based SSH authentication works.

Nov 11, 2015

Burst Buffer enabled for early users.

Oct 29 - Nov 12, 2015

Early users were enabled in 7 phases. All users were enabled by Nov 12, 2015.

Sept 29, 2015

Cori Phase 1 (along with Burst Buffer) delivered.