This section of the site hosts tutorials and user guides. For information about training events and workshops, user meetings, and technical bulletins, see the Updates and Events section.

User Documentation

Information on https://hpc.llnl.gov is considered official Livermore Computing documentation. If you have questions or concerns about this information or anything that links from this site to another LLNL site, please contact the LC Hotline at 925-422-4531 option 1 for verification.

Using LivChat for HPC Documentation or LC Use Cases

As stated above, this site and direct links from it should be considered the authoritative source of LC documentation. However, in acknowledgment of the increasing use of LivChat by LLNL users, LivChat now includes the current HPC.llnl.gov site as well as additional user docs (e.g. Flux documentation). Updates to HPC.llnl.gov are added to LivChat on a regular cadence.

NOTETo get the most accurate answers about hpc.llnl.gov content, toggle "Ask to use LLNL data" ON. The non-LLNL ChatGPT data for HPC.llnl.gov, for example, is from 2024 and, therefore, quite out of date in many cases.

Image of the "Ask about LLNL Data" toggle
Image of toggle when one is "Asking about LLNL Data", which is the correct setting for the most accurate LC information.
 

From LivChat's own documentation, please note the disclaimer: "LivChat is NOT A SUBSTITUTE for official LLNL training, policies, or advice from authorized LLNL personnel or subject matter experts."

In other words, if something you discover through LivChat doesn't work: Check the docs on or linked from this site. And, if you find something that is really incorrect or seems like a hallucination, please fill out this webform: https://hpc.llnl.gov/contact, tick "Other", and send a link to your erroneous results. 

Tutorials (a.k.a. Training Materials)

Most tutorials are kept online. They cover a range of topics related to parallel programming and using LC's HPC systems.

User Guides

Beyond the training tutorials, we also have several user guides (aka user manuals) online dealing with a variety of topics.

LC New Employee Resources

This is our general user site. For LC staff-specific information, check out our new employee resources, located on Confluence, a wiki which enables new employee questions and issues to be crowd-sourced. Also on Confluence is our new acronyms page.  Please contribute to keeping it fresh, as the previous acronyms page was sorely out of date.