2017-06-30 00:16:36: The maintenance was a success and Blue Waters was returned to service at 11:55pm, with login nodes returned earlier by 10pm. Though critical security patches warrant such short notice interruptions, we apologize for any inconvenience this may have caused. Have a safe and happy Independence Day.
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Update: This issue has been resolved. No changes to your code is necessary.  Please report any other issues to We have been alerted to an issue causing
Blue Waters has been returned to service at 2:27am on 3/29/2017.
Blue Waters is currently in maintenance starting at March 28th 12am until March 29th 4pm.   The full system will be unavailable during this period. 
Blue Waters is currently experiencing a meta data server (MDS) failover on the scratch file system that began at 10:15 PM CT. As a result, all I/O transactions for the scratch filesystem
We are encountering instability on the login nodes. We will be rotating the login nodes into & out of service until the issue is isolated and resolved. Please access the available logins by
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