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News
Pleiades Jobs will be Suspended on Nov. 15 for VAST Filesystem Patching
10 Nov, 2023
PBS jobs running on Pleiades will be suspended on Wednesday, November 15, from 9:00 a.m. to 5:00 p.m. (Pacific Time) to facilitate VAST filesystem patching. The following services will be affected: Pleiades will not be available during this...
NASA's SC23 Exhibit Highlights Research by HECC Users
09 Nov, 2023
The NASA@SC23 exhibit showcases 42 science and engineering projects, many of which were led by members of the HECC user community. In addition, HECC Project Manager Bill Thigpen talks about the project's accomplishments over the last year and...
GPU Allocation Enforcement Starts November 7
31 Oct, 2023
On November 7 at 10:00 a.m. (Pacific Time), GPU allocation enforcement will be enabled. This means if you use (or plan to use) the GPU nodes (v100s) on the PBS server pbspl4, your project must have a GPU allocation. If you are not sure whether...
Best Practice for Mounting Filesystems in PBS Job Scripts
23 Oct, 2023
Some PBS jobs are failing due to filesystems not being properly mounted before a user’s executable is run. To avoid this, be sure to add the #PBS -l site=needed= directive near the top of your PBS job script. For example, if your home directory...
HECC Visualization and Data Analysis Services
20 Oct, 2023
Did you know that all users have access to a variety of services through HECC? For example, our data analysis and visualization experts can work closely with you to create graphics and videos, using a variety of scalar and vector field methods,...
Reminder: Suspend/Resume and Dedicated Time for NAS Systems on Oct. 4
04 Oct, 2023
There will be a suspend/resume for Aitken, Pleiades, and Electra on Wednesday, October 4, from 10:00 a.m. to 11:59 p.m. (Pacific Time) to facilitate patching. The following services will be affected: Aitken, Pleiades, and Electra will not be...
2023 HECC User Survey Extended to Oct. 6
02 Oct, 2023
The 2023 HECC User Survey is now available through Friday, October 6. This is your chance to help shape the future of HECC! Be sure to check for a recent email from NAS Operations for a link to the survey. We want to hear from you. Previous...
Aitken, Electra, Pleiades, and Lou Unavailable on Sept. 6
21 Aug, 2023
There will be a suspend/resume for Aitken, Pleiades, and Electra, on Wednesday, September 6, from 10:00 a.m. to 11:59 p.m. (Pacific Time) to facilitate kernel patching. The following services will be affected: Aitken, Pleiades, and Electra...
Requests for GPU Computing Time for FY24 Due Aug. 25
31 Jul, 2023
For Fiscal Year 2024, which begins October 1, NAS projects will require a separate allocation to use GPU resources. Projects that require both CPU and GPU resources can use both but will require a separate request for each. All NASA mission...
Update: NAS Facility Shutdown Completed
26 Jul, 2023
The annual NAS facility maintenance is complete and all systems are available. If you have any questions, please contact the Control Room at (800) 331‑8737, (650) 604‑4444, or support@nas.nasa.gov. Previous Notification Annual NAS facility...
NASA and the DOE Exascale Computing Project Virtual Workshop on July 18
28 Jun, 2023
NASA and the DOE Exascale Computing Project (ECP) are hosting a virtual workshop on ECP’s Extreme-scale Scientific Software Stack (E4S) on July 18, 2023. The purpose of the workshop is to build on an Advanced Modeling & Simulation (AMS) Seminar...
Requests for Computing Time for the 2024 Operational Year Due July 20
23 Jun, 2023
Note: Beginning October 1, NAS will implement a separate allocation and accounting for GPUs. Please stay tuned for a separate call for GPU requests later this summer. All NASA mission directorates are currently gathering requests for High-End...
Transition to TOSS4 from TOSS3 for Spring 2023
02 Jun, 2023
Due to NASA security requirements, nearly all HECC systems will transition to TOSS4, the Red Hat Enterprise Linux 8-based Tri-Lab Operating System Stack Version 4. The transition will take place through May 31. Portions of the systems will...
Update: SUP Client and Hardware Changes go into Effect June 2
02 Jun, 2023
UPDATE: Beginning June 2, 2023 at 4 p.m. (Pacific Time), users will need to update their SUP client with the latest version 8.12 (available here). While the updated file will be available beforehand, please note that this version of the client will...
Urgent SFE Downtime for Upgrades, May 25 and May 31
24 May, 2023
The secure front ends (SFEs) will be placed in dedicated time to be upgraded according to the following schedule: sfe6 and sfe8: Thursday, May 25, 5:00-5:30 p.m. (Pacific Time) sfe7 and sfe9: Wednesday, May 31, 5:00-5:30 p.m. (Pacific Time) ...
Update: Pleiades Upgraded to TOSS4
18 May, 2023
The operating system of all Pleiades compute nodes has been upgraded to TOSS4, the Red Hat Enterprise Linux 8-based Tri-Lab Operating System Stack Version 4. For important information about using systems in the TOSS4 environment, see Transition to...
Update to Authentication Method on NAS Supercomputers
24 Apr, 2023
Updated NASA security regulations require that NAS supercomputers drop password authentication in support of RSA SecurID authentication. The roll-out for this change began on May 1, 2023 at 10:00 a.m. (Pacific Time), however, it will take some time...
Endeavour4 in Dedicated Time April 26-May 3
17 Apr, 2023
There will be an extended dedicated time for endeavour4 from Wednesday, April 26 at 8:00 a.m. to Wednesday, May 3 at 5:00 p.m. (Pacific Time) to upgrade the system to TOSS4. The endeavour4 node will not be available during this period. Any jobs...
Maintenance Outage for Electra Skylake Nodes April 19-20
31 Mar, 2023
A facility maintenance outage for Electra's Skylake nodes is scheduled from Wednesday, April 19, 2023 at 6:00 a.m. through Thursday, April 20, 2023 at 11:59 p.m. (Pacific Time). Electra's Skylake nodes will be unavailable during this period. The...
SFE Patching on April 5 and 6
27 Mar, 2023
The secure front ends (SFEs) will be placed in dedicated time for software patching according to the following schedule: sfe6 and sfe8: Wednesday, April 5, 7:00-7:30 p.m. (Pacific Time) sfe7 and sfe9: Thursday, April 6, 7:00-7:30 p.m. (Pacific...
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