Known issue with an Unresolved Resolution state is an active problem under investigation; a temporary workaround may be available.
A known issue with a Resolved (workaround) Resolution state is an ongoing problem; a permanent workaround is available which may include using different software or hardware.
A known issue with Resolved Resolution state has been corrected.
| Title | Category |
Resolution |
Description | Posted | Updated |
|---|---|---|---|---|---|
| WARN SparkSession in Jupyter + Spark instance | Software |
Resolved (workaround) |
You may encounter the following warning message when running a Spark instance using the default PySpark kernel in a Jupyter + Spark application: WARN SparkSession: Using an... Read more |
11 months 1 week ago | 11 months 5 days ago |
| STAR error bgzf_open: Assertion failed | Cardinal, Software |
Resolved (workaround) |
You may encounter errors that look similar to these when running STAR 2.7.10b: STAR: bgzf.c:158: bgzf_open: Assertion `compressBound(0xff00) < 0x10000' failed. Cause... Read more |
11 months 5 days ago | 10 months 3 weeks ago |
| Instability on Clusters after May 13 Downtime |
Resolved |
We've been experiencing some instability on the clusters (particularly Cardinal and Ascend) following the recent May 13 downtime, especially with parallel job processing. If you notice any unusual... Read more |
11 months 5 days ago | 10 months 2 weeks ago | |
| Python version mismatch in Jupyter + Spark instance | Software |
Resolved (workaround) |
You may encounter the following error message when running a Spark instance using a custom kernel in the Jupyter + Spark app: 25/04/25 10:49:01 WARN TaskSetManager:... Read more |
11 months 5 days ago | 4 months 6 days ago |
| NCCL hang on Ascend dual-GPU nodes | Ascend, GPU, Software |
Resolved (workaround) |
Users may encounter the following message and experience NCCL hangs if the first operation is a barrier when running multi-GPU training. We have identified... Read more |
10 months 3 weeks ago | 10 months 2 weeks ago |
| MATLAB (server) missing functionality | Software |
Resolved |
You may encounter missing functionality on MATLAB (server) such as SIMULINK not being available. This occurs when using MATLAB version r2024a. Please use MATLAB r2024b |
8 months 5 days ago | 6 months 2 weeks ago |
| MPI fails with UCX 1.18 | Software |
Resolved (workaround) |
After the downtime on August 19, 2025, users may encounter UCX errors such as: UCX ERROR no active messages transport to <no debug data>: self/memory -... Read more |
7 months 3 weeks ago | 6 months 1 week ago |
| Schrodinger 2023.2 does not launch | Software |
Resolved (workaround) |
Schrodinger 2023.2 does not launch through OnDemand or OnDemand desktop, failing with "fatal error" |
3 months 4 weeks ago | 1 month 2 weeks ago |
| Apptainer container builds fail on compute nodes due to /tmp namespace behavior | Software |
Resolved (workaround) |
Building Apptainer containers on compute nodes may fail during |
3 months 1 week ago | 2 months 4 days ago |
| GPU/VIS nodes for various OOD apps are broken | Cardinal, OnDemand, Outage, Software |
Resolved |
After the most recent downtime we discovered that various OOD apps relying on the "virtualgl" module on Cardinal were broken. We have since updated and pinned the latest virtualgl version... Read more |
2 months 2 weeks ago | 2 months 1 week ago |
