Unfortunately, there is an issue with the Grid Master process which has rendered qstat, qsub, etc... unusable. We're working on diagnosing the problem, now. But, our Grid Engine guru is out of town, at the moment.
Any jobs that were submitted before the outage are still running and will continue to run, as expected.
Update about this situation will be posted here, on the blog. If you have any questions or concerns, please email firstname.lastname@example.org.
Update - 17:20: After refreshing two problematic nodes and removing one corrupted node, the grid seems to be running reliably, again. We'll be keeping a close eye it things for a while, but we expect this will not be a reoccuring issue.