The Daily Bulletin

CISL staff are recommending that users avoid the tar command’s -S and --sparse options for handling sparse files when creating an archive. A recently discovered data corruption issue resulting from use of those options can affect tarballs that users create and it also has corrupted some automated GLADE user home directory backups over the past several months. Snapshots have not been affected, so users who suspect some file corruption may be able to use those to recover files.

Users are encouraged to avoid using the -S or --sparse options until a fix is in place and to watch for a Notifier message announcing that the work is complete.

Allinea Software will hold a free webinar on Thursday, October 5, dealing with memory-bound code in high-performance and scientific applications. Attendees will see how the right checks and ongoing tuning can improve software run-times and identify bottlenecks that can slow down applications.  Click here to register or to find out more.

Acknowledging the support of NCAR and CISL computing when you publish research results helps ensure continued support from the National Science Foundation and other sources of funding for future high-performance computing (HPC) systems. It is also a requirement of receiving an allocation, as noted in your award letter.

The reporting requirements, how to cite your use of various systems, and recommended wording of acknowledgments can be found on this CISL web page. The content of citations and acknowledgments varies depending on the type of allocation that was awarded.