The new hpcwoods has a newer version of SSH, which no longer allows certain insecure algorithms. Unfortunately, this means the SSH Secure Shell client for Windows will no longer work with hpcwoods.

This is not surprising, as it hasn’t been updated in years. We have been discouraging its use for several months now, due to the fact it did not correctly handle forced password resets.

Windows users should use the PuTTY SSH client. For file transfer, we recommend FileZilla.

hpcwood’s SSH host key also changed as a result of the upgrade. PuTTY users will be presented with a dialog at connection time. Mac and Linux users will need to remove the old key before attempting to connect to hpcwoods:
ssh-keygen -R hpcwoods.olemiss.edu

We plan on Maple being down for a few days of maintenance beginning on May 11th. Please plan your jobs accordingly.

Catalpa will go down for an operating system upgrade on the morning of February 28th. It will be down for roughly two days.

Catalpa is back up after some hardware maintenance on Monday. We were successful in fixing one hardware issue, but unsuccessful with another. As such, Catalpa will have to be brought down again in the short to medium term. We will give notice once we have a date scheduled for the maintenance.

Monday afternoon Sequoia suffered a boot drive failure. It is back up as of last night. You will need to resubmit any jobs that were running at the time.

On Monday, November 13th, Catalpa will be brought down to investigate some hardware issues that we’ve been seeing. We hope to have it back up within a couple of days.

We’d like to officially announce our “new” system, Maple. Like Sequoia, Maple is a cluster. While it has slightly fewer CPU cores than Sequoia, the cores are much newer. Some Maple nodes have GPUs. The nodes have either 64 or 128GB of memory.

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