Technical Staff Blog

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Contractors are making some power changes to the circuits that feed our compute nodes in the data center tomorrow morning. These changes should prevent our hardware from being affected by the annual data center emergency power test performed by CIS.

If all goes as planned, the majority of the compute nodes should remain operational. We ...

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We were experiencing an unusually high load on one of the GPFS NFS nodes (runts), which was causing a slowdown of all NFS traffic through this node. We've seen this behavior before and, as of yet, have been unable to identify the root cause. Unfortunately, it doesn't get better with time, so we ...

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We added a new disk tray of 10 2TB sata disks to the Main GPFS file system, providing an additional 15.6TB of usable space.  The Main filesystem is running a disk restripe to rebalance the filesystem. This process will likely take a week to complete, but normal file system operations should be available through ...

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By now, you've no doubt noticed a large truck bed with two big cooling towers parked next to the CIT. Are you curious about what's going on? The chiller system, which provides cool water to the various machine rooms in the building, is original to building, rather cantankerous, and in the process of ...

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