May 2024 Maintenance Details

Hello HYAK Community,

Thanks again for your patience with our monthly scheduled maintenance, there are some notable improvements we implemented today.

KLONE node image: Over the past few weeks, you may have noticed some KLONE instability. This was a result of some behind the scenes storage upgrades that inadvertently introduced wider impacts to the existing cluster automation. At the time, we introduced a temporary fix to get the cluster back online but with today’s maintenance we implemented a more comprehensive fix.

Infiniband firmware: The KLONE cluster is built on the infiniband HPC interconnect for node-to-node communication. While KLONE originally launched with the HDR generation of infiniband, we have since upgraded mid-KLONE to have a HDR-NDR hybrid interconnect. NDR infiniband is required to support the latest compute slices we offer. We updated the firmware on our NDR switches following vendor recommendations for increased stability.

Apptainer on MOX: Apptainer (formerly Singularity) is the root-less containerization solution we provide on both HYAK clusters. Apptainer version 1.3.1 was deployed on both KLONE and MOX. As a reminder, on KLONE Apptainer is accessed through a module and is only available on compute nodes after module load apptainer. On MOX, Apptainer is default software and can be accessed with Apptainer commands directly after starting an interactive job for example, apptainer --version.

Training Opportunities: COMPLECS (San Diego Supercomputer) is hosting an Intermediate Linux Shell Scripting online workshop on Thursday May, 16 at 11:00 am Pacific Time. Register here.

Our next scheduled maintenance will be Tuesday June, 11, 2024. Stay informed by joining our mailing list. Sign up here.

Questions? If you have any questions for us, please reach out to the team by emailing help@uw.edu with Hyak in the subject line.