We will be upgrading the Cerebras cluster and performing system updates to its shared filesystem on Tuesday, November 28, starting at 3:00 p.m. UTC (09:00 a.m. CST 11/28) and ending at 11:00 p.m. UTC (5:00 p.m. CST 11/28). During this time, users will not be able to access the login nodes or AI systems, and no jobs or processes will run. As part of this work, the Cerebras software will be upgraded to the new R2.0.x release. After the upgrade is complete, users will need to rebuild their Python virtual environments (venv) to match this new release version. A new modelzoo will also be available from Cerebras.