CISL Daily Bulletin

The Daily Bulletin delivers news about CISL’s high-performance computing environment, training opportunities, scheduled maintenance, and other events of interest to the user community. To get the Daily Bulletin by email, use this link to subscribe.

Derecho weekly update

June 5, 2023

Derecho’s Acceptance Test Phase (ATP) continued last week and the project reached a milestone when Accelerated Scientific Discovery (ASD) users were given access to the system on June 1 to begin building and running their models. While the vast majority of the benchmark results meet or exceed expectations, and the cumulative performance is meeting the required 3.5 CSEP metric, CISL continues to...

Submit an abstract by August 1 for the November Correctness Workshop

June 2, 2023

Abstracts are being accepted now through August 1 for the Workshop on Correctness and Reproducibility for Climate and Weather Software. This workshop will take place November 9 & 10 NCAR’s Mesa Laboratory in Boulder, Colorado, and virtually. We are soliciting talks related, but not limited to, the following topics: • Tools and approaches for software testing, debugging, quality assurance, and ...

No system downtimes for week of June 5 - 9

June 2, 2023

None planned for Cheyenne, Casper, GLADE, Campaign Storage, Quasar, Stratus, or JupyterHub.

Derecho weekly update

June 1, 2023

Derecho’s Acceptance Test Phase (ATP) was resumed after CISL and HPE engineers significantly reduced job performance variability through some tuning and configuration changes. Additionally, HPE and CISL have been able to maintain an availability of 98% for the compute resources during this testing phase. While the vast majority of the benchmark results meet or exceed expectations, CISL is worki...

NCAR HPC users invited to June 6 user group meeting

May 31, 2023

All NCAR HPC users are invited to the NCAR HPC User Group (NHUG) monthly meeting from 9 to 10 a.m. MDT on Tuesday, June 6. CISL staff will provide an update regarding availability testing for the Derecho system and will provide an overview of the GLADE-2 transition. The meeting will also touch on user feedback requests for future NHUG meetings. To contribute to the agenda or submit questions fo...

Optimizing I/O Tutorial for Lustre and Derecho File System

May 30, 2023

A virtual tutorial on optimizing I/O in serial and parallel applications will be hosted from 11:30 a.m. to 1:30 p.m. MT June 12-14 by the University of Texas, San Antonio. This three-day tutorial will help NCAR HPC users prepare for the upcoming transition to Derecho’s Lustre parallel file system. Topics will include parallel file systems (Lustre), MPI I/O, and I/O in the context of checkpointi...