Some common questions, errors, and problems are categorized below. Click the Expand Topics link in the upper right to see all entries at once. You can also use the search box above to search the user guide for any issues you are seeing.

About Halstead
    Can you remove me from the Halstead mailing list?
    Do I need to do anything to my firewall to access Halstead?

Logging In & Accounts
    Errors
        /usr/bin/xauth: error in locking authority file
        My SSH connection hangs

    Questions
        I worked on Halstead after I graduated/left Purdue, but can not access it anymore


Jobs
    Errors
        cannot connect to X server / cannot open display
        bash: command not found
        bash: module command not found
        close Firefox / Firefox is already running but not responding

    Questions
        How do I know Non-uniform Memory Access (NUMA) layout on Halstead?


Data
    How is my Data Secured on Halstead?
    Can I share data with outside collaborators?
    Can I access Fortress from Halstead?

Software
    Cannot use pip after loading ml-toolkit modules
    How can I get access to Sentaurus software?

About Research Computing
    Can I get a private server from RCAC?