The Matrix cluster will be unavailable from Tuesday, December 1, 2009 through the following weekend, in order to undertake a major system upgrade.  The system should be available again on Monday, December 7, 2009.

A scheduling reservation will be put in place that will prevent jobs from starting if the specified walltime would extend into the maintenance period.  If there are jobs you can fit in during the days leading up to the shutdown by successively reducing the walltime to fit the shrinking window of opportunity, please do so.

If there are any jobs still running on the morning of Dec 1, they will be killed.

Jobs that are in the input queue at the time of the system shutdown should be handled normally by the batch scheduling software when the system is brought back up after the upgrade.