Reminders
Fall allocation requests are due September 2
If you are requesting allocation for the Fall 2025 quarter (October 1 to December 31), applications are due on September 2. If your group has already been awarded allocation for Fall 2025 (from an allocation request from a previous quarter) and does not need to adjust the quantity of resources allocated, no action is necessary.
Allocations provide priority access to CHPC-owned computational resources: CPU nodes on notchpeak and granite (General Environment allocations), GPU nodes on granite (General Environment allocations), and CPU nodes on redwood (Protected Environment allocations). For more information about allocations, including instructions for applying for an allocation, please see the CHPC's documentation.
Duo will be required to access General Environment resources beginning in early September
Duo (two-factor authentication) will be required to access General Environment resources, including the granite, notchpeak, kingspeak, and lonepeak clusters, beginning in early September. More information about this change is available on the CHPC website.
Storage, backup, and deletion policies
We would like to remind all users of the data storage and retention policies on CHPC systems. Understanding these policies helps ensure your research data are stored appropriately and protected against loss. If you have questions or concerns about data storage, please contact us.
In general, most CHPC storage systems do not have automatic backups by default. This includes, but is not limited to,
- Scratch spaces
- Scratch spaces are intended only for temporary file storage
- Files are automatically deleted from scratch spaces after a set period; do not use them for long-term storage
- Home directories (General Environment)
- Group spaces (General Environment)
- Project spaces (Protected Environment)
Some groups have purchased automatic backups for storage on CHPC systems. If you are unsure whether your data are backed up automatically, assume they are not. Please check with your PI or contact the CHPC for confirmation.
Researchers around the world lose important data every day. CHPC staff have worked with researchers who have lost data to human error, hardware failures, and theft of personal devices. Some lost months of work. Data loss can happen to anyone, so we strongly recommend maintaining backup copies of important work.