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News
Removal of Older Versions of Apache Subversion
29 Nov, 2016
The NAS Subversion server is being updated to improve security. This change causes older versions of the Subversion software to fail to connect to the NAS Subversion server. Therefore, the OS-supplied version (/usr/bin/svn) and the older versions...
SMD Computing Time Requests Exceed Capacity
07 Nov, 2016
Continuing a multi-year trend, Science Mission Directorate (SMD) computing time requests far exceeded capacity at both the NASA Advanced Supercomputing (NAS) Facility and the NASA Center for Climate Simulation (NCCS). As a result many Principal...
New NAS MATLAB License Usage Policy
31 Oct, 2016
Effective immediately, we have implemented a new policy to better manage the limited number of NAS MATLAB licenses. In summary: Each user is limited to a single interactive MATLAB license. When using the MATLAB GUI, after 4 hours of being idle...
Training Materials from the NAS User Webinar, "Getting a NAS Account" Now Available
18 Oct, 2016
The training materials from the user webinar "Getting a NAS Account," held Wednesday, October 19, 2016, are now available in the Past Webinars Archive. This webinar covers the steps required for Principal Investigators (PI) and new users in...
Update: NAS Systems Back in Production
11 Oct, 2016
Pleiades, Endeavour, Merope, Lou, and the Lustre filesystems are online and available. We apologize for any inconvenience, and thank you for your patience. If you have any questions or concerns, please contact the Control Room at (800) 331-8737,...
Bridge Nodes Were Removed on Sept. 8
08 Sep, 2016
The bridge nodes (bridge[1-4]) were retired September 8, 2016 at noon (Pacific Time) to improve stability of the InfiniBand fabric. With the bridge nodes no longer available, you will need to use the PFE hosts to access Pleiades and Endeavour....
Results of 2015 User Survey Now Available
20 Jul, 2016
In 2015, 314 users participated in a user survey that addressed 12 NAS service areas. This report provides a summary of the survey results and information on related activities undertaken over the last year to improve performance in several key...
Additional 14 Broadwell Racks Incorporated into Pleiades
05 Jul, 2016
Another 14 racks containing Intel Broadwell processors were incorporated into Pleiades on July 1, bringing the total number of Broadwell racks to 28 and increasing the system's theoretical peak performance from 6.28 to 7.25 petaflops. Pleiades is...
Important Changes to Running MATLAB in Batch Jobs
22 Jun, 2016
On Pleiades and Merope, PBS batch jobs are no longer allowed to query the license server for MATLAB licenses. This change prevents multi-node PBS batch jobs from querying the license server from multiple nodes simultaneously, which can overwhelm...
Training Materials from Recent Webinars Now Available
21 Jun, 2016
Training materials from the following web-based user training sessions are now available in the Past Webinars Archive: Simplifying and Optimizing Your Data Transfers (slides and video) Performance Evaluation of Pleiades Broadwell Nodes Using...
All Westmere Racks Removed from Pleiades
20 Jun, 2016
All Westmere racks (including the Westmere-based GPUs) were removed from Pleiades on June 20 in order to accommodate 14 new racks containing additional Intel Broadwell processors. The new Broadwell racks are being installed and are scheduled to be...
Shift Transfer Tool Upgrade Provides New Features
23 May, 2016
The latest upgrade to the Shift transfer tool, shiftc, provides the following enhancements to automated transfer components: Six new dedicated nodes are now transparently available for Shift transfers. All six nodes have access to the Pleiades...
Second Phase of Pleiades Broadwell Upgrade Completed
05 May, 2016
HECC engineers have added 4 more new racks containing Intel's E5-2680v4 Broadwell processors, completing the latest Pleiades augmentation. A total of 14 Broadwell racks are now incorporated into Pleiades, increasing theoretical peak performance...
New PBS Command Enables Release of Idle Nodes from Jobs Running on Merope
05 May, 2016
The new pbs_release_nodes command enables you to release nodes from jobs running on Merope when it benefits you to do so. For example, during post-processing steps, most of the nodes held by a job are idle; when you release those nodes, the job...
Allocation Period Start Date for All Organizations Changing to Nov. 1
26 Apr, 2016
Starting November 1, 2016, the allocation period for all organizations will be Nov. 1 – Oct. 31 each year. In order to transition to the November award cycle, all allocations for the May 2016 award cycle will be for only 6 months (ending Oct. 31,...
myNAS Mobile App for Android and iOS
23 Feb, 2016
Have you tried the myNAS app? myNAS enables you to monitor your PBS jobs on Pleiades, Endeavour, and Merope. You can receive notifications when your jobs change state, view job status and output files, check computing resources, and access the...
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