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News
Update: /nobackupp6 is Available
05 Mar, 2015
Update: The work on the /nobackupp6 filesystem is completed, and the filesystem is available. We apologize for the inconvenience. If you have any questions, please contact the Control Room at (800) 331-8737, (650) 604-4444, or support@nas.nasa.gov.
Status of DMZ File Servers
04 Mar, 2015
Thanks to everyone who took the time to reply to our request for feedback on the DMZ file servers. Based on your responses, we brought dmzfs1 back up using repurposed hardware; there may be other hardware changes to dmzfs1 in the near future. The...
NAS Firewall Policy Change Effective March 5
25 Feb, 2015
The NAS firewall policy change to block non-registered ports into the NAS network has been postponed for one week in order to ensure users have sufficient time to verify that the new port range is allowed through their sites' firewalls. The change...
Update: Pleiades Available
21 Feb, 2015
Update: The issues have been resolved, and Pleiades is now available. We apologize for any inconvenience. If you have questions or concerns, please contact the Control Room at (800) 331-8737, (650) 604-4444, or support@nas.nasa.gov.
dmzfs1 Up and Running
12 Feb, 2015
The host dmzfs1 is back up and available for use. Please note that bbftp is not available, just scp and sftp. If you have any questions, please contact the Control Room at (800) 331-8737, (650) 604-4444, or by email at...
Pleiades Augmentation Complete
20 Jan, 2015
HECC engineers have completed the latest augmentation to Pleiades with the integration of 14 new SGI Haswell compute racks. The expansion brings the total number of Haswell racks to 29, and increases Pleiades' theoretical peak performance from 4.49...
Older MPT Modules Were Removed from Pleiades on January 5, 2015
05 Jan, 2015
In 2014, the NAS Systems group worked with Mellanox, Intel, and SGI engineers to identify the sources of packet loss occurring on the InfiniBand network. We found and resolved problems in several areas including cable layout, system BIOS, switch...
New iOS App Available for Remote Monitoring of HECC Jobs
07 Nov, 2014
We are pleased to announce the release of myNAS, a new mobile app that enables you to monitor your PBS jobs remotely on an iPhone or iPad. With myNAS, you can receive notifications when your jobs change state or produce output, view the status of...
NAS Online Account Request Form Authentication Has Been Updated
05 Nov, 2014
NASA is in the process of migrating its website authentication platform from Launchpad to SiteMinder. To be consistent with this change at the agency level, we recently updated the NAS Account Request form to use SiteMinder. The main difference...
Lou Mass Storage System Back in Service
29 Oct, 2014
NAS engineers have restored Lou to production, after resolving the file system problems that were caused by the power outage last week. We believe that users should see no further issues related to the problem. We apologize for the extended...
Pleiades Haswell Upgrade Completed
28 Oct, 2014
HECC engineers have now completed the latest upgrade to Pleiades, which incorporates Intel's new Haswell processors. The expansion added 15 Haswell racks, increasing the system's computational capability by approximately 25%. Theoretical peak...
Lou Mass Storage System Unavailable
28 Oct, 2014
The Lou mass storage system is unavailable at this time. While there is currently no estimated time to bring the system back online, we will be providing daily updates on the status of Lou until the problem is resolved. On Thursday October 23rd,...
Pleaides and Endeavour Back in Production After Dedicated Time
27 Oct, 2014
Pleiades and Endeavour are back up and available, and you can resume submitting jobs. The Merope system is not yet available. Thank you for your patience. If you have any questions or concerns, please contact the NAS Control Room at (800)...
Opportunity for Early Access Testing of Haswell Processors
16 Oct, 2014
As part of the rollout of the 15 new Haswell racks to Pleiades, we have started an early access period to allow users to test their codes. During this period, we are asking users to help us identify any issues and to run some performance tests as...
New Tool Available for Changing NAS Passwords Online
15 Sep, 2014
You can now change your NAS password (sometimes referred to as your Lou or LDAP password) via a new online tool, Webpass, using your RSA SecurID fob and your Agency User ID (AUID). Bookmark the following link in order to use Webpass the next time...
Firmware Fix for QP Errors on Pleiades
04 Sep, 2014
Mellanox, the vendor for the InfiniBand cards in each Pleiades node, has developed a firmware fix for the InfiniBand-related queue pair (QP) errors that caused some jobs to fail over the past several months. Testing at NAS and SGI shows that the...
Workaround for QP Errors on Pleiades
22 Aug, 2014
Note: This workaround should no longer be used. Please see information about the firmware fix in the InfiniBand QP Errors article. Over the past several months, InfiniBand-related queue pair (QP) errors have caused some jobs on Pleiades to fail,...
Merope Harpertown Racks Decommissioned, Westmere Racks Now Available
21 Aug, 2014
The Merope Harpertown racks have been decommissioned to make way for a new version of Merope, which is now available with 512 Westmere nodes, a new front-end system (mfe1), and a new PBS server (pbspl233b). When you run jobs on Merope, please...
Pleiades is Back to Full Capacity
18 Aug, 2014
After the cooling pumps were successfully installed, and some final issues were resolved, we were able to bring all four chillers back online today. Pleiades is now back up to full capacity. The Systems Status page may continue to show degraded...
NAS System Status for August 15
15 Aug, 2014
The cooling tower pumps have been repaired and were installed this week. A water pipeline on one of the pumps was corroded and is now being fixed, and we are testing the cooling system components while the pipeline is repaired. We currently expect...
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