This page records a brief timeline of significant events and user environment changes on Cori (in reverse chronological order).
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. 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/18.104.22.168) after scheduled maintenance. Detailed lists can be found here.
July 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. Intel default version changed from 22.214.171.124 to 126.96.36.199.
SW default change to CDT 17.09 after scheduled maintenance. Please see the detailed list here.
November 7, 2017
Oct 6-9, 2017
Maintenance on the EPO (Emergency Power Off) and water system for the large systems.
Intel default version changed from 188.8.131.52 to 184.108.40.206.
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.
July 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 change: 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 220.127.116.11 and 18.104.22.168, 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 22.214.171.124 to 126.96.36.199.
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
SCori 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.
Cori KNL cabinets arrival. First cabinets arrived on July 13.
Jul 4, 2016
Introduced SLURM file license features.
June 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.