Ascend
A downtime for OSC HPC systems is scheduled from 7 a.m. to 9 p.m., Tuesday, May 12, 2026. The downtime will affect the Pitzer, Cardinal and Ascend Clusters, web portals, the state-wide licenses and HPC file servers. MyOSC (the client portal) will be available during the downtime. In preparation for the downtime, the batch scheduler will not start jobs that cannot be completed before 7 a.m., May 12. Jobs that are not started on clusters will be held until after the downtime and then started once the system is returned to production status.
Reboot of Public-Facing Systems for Security Fix
Due to a critical security vulnerability we need to reboot public-facing systems to deploy a mitigation against the vulnerability. Please use support.osc.edu if you have questions or concerns.
Default MPI Module Update
The default MPI module, MVAPICH, will be updated from version 3.0 to 4.1 on May 12, 2026, during the upcoming scheduled downtime. For more information, please visit: https://www.osc.edu/resources/technical_support/hpc_changelog/2026/default_mpi_module_update
Code Server
Code Server provides a browser-based instance of Visual Studio Code, enabling users to write, edit, and run code directly on OSC cluster resources without local installation.
ComfyUI now available on Ascend
Date:
Tuesday, March 31, 2026 - 1:00pm
System(s):
ComfyUI is available on Ascend cluster. Use with module load comfyui/20201
Requires GPU and a desktop environment. See https://www.osc.edu/resources/available_software/software_list/comfyui for more info.
ComfyUI
ComfyUI is an open-source inference server and web frontend for generative AI models, with a focus on image, video and audio generation. Its node-based workflow offers highly flexible routing and model composition for complex generation pipelines.
OnDemand Shell App Not Working in Firefox 148
We are aware of an issue where the OnDemand Shell app is not functioning in Firefox 148. If you encounter this problem, please use a different browser to access the OnDemand Shell app until this issue is resolved. We have confirmed that Chrome, Edge, and Safari are working.