For the full question set, see the FAQs on the HPCC Wiki.Documentation Index
Fetch the complete documentation index at: https://docs.nyc-ai.app/llms.txt
Use this file to discover all available pages before exploring further.
Accounts & access
How do I get an account?
How do I get an account?
Email HPCHelp@csi.cuny.edu with your name, CUNY affiliation, PI / sponsor, project description, and expected resource needs. Full details in Accounts & access.
How do I log in?
How do I log in?
Use an SSH client to connect to
chizen.csi.cuny.edu, then SSH from Chizen to the system you want (e.g., arrow). Only Chizen and Karle are reachable from outside the CSI network.I can't log in: what do I check?
I can't log in: what do I check?
Work through this list before opening a ticket:
- Are you using the correct username?
- Are you typing the correct password? (Passwords are case-sensitive.)
- Which system are you connecting to? Only Chizen and Karle are externally accessible.
- Do you have access to the system? Confirm the full hostname (
host@csi.cuny.edu).
How do I reset my password?
How do I reset my password?
Once logged in, run
passwd. If you’re locked out or the password has expired, email the HPC Helpline. New passwords must meet CUNY policy: at least 8 characters, with uppercase, lowercase, digit, and an approved special character.Storage & data
What is my disk quota?
What is my disk quota?
The default is 50 GB / 10,000 files on
/global/u/<username>. Class accounts are capped lower (typically 10 GB). Request increases through the HPC Helpline with a short justification.What is /scratch space?
What is /scratch space?
/scratch is temporary workspace used by jobs in the queue or in execution. Output from jobs may temporarily live there. It is not backed up. To keep anything from scratch, copy it to your home directory. Files older than roughly two weeks, or on a filesystem that’s more than ~70% full, may be purged.How do I transfer files?
How do I transfer files?
Three options: SFTP / SCP (via
cea.csi.cuny.edu), Globus Online (endpoint cunyhpc#cea, preferred for large transfers), and iRODS (for projects on an iRODS grid). See Storage & quotas for commands.Jobs & software
How do I submit a job?
How do I submit a job?
Write a SLURM script, save it (e.g.,
run.sh), and run sbatch run.sh. See the Job submission page for annotated templates for serial, OpenMP, MPI, hybrid, GPU, and array jobs.Can I run jobs on the login node?
Can I run jobs on the login node?
No. Login-node jobs are killed and the account may be suspended. Use
sbatch, or srun --pty for interactive compute-node sessions.How do I see what software is available?
How do I see what software is available?
Run
module avail to list modules, module spider <name> to search (LMOD only), and module load <name> to activate one. See Software & modules.I can't find the application I'm looking for.
I can't find the application I'm looking for.
Email the HPC Helpline with the software name, version, install instructions or source link, and why you need it. For Python or Julia packages specifically, you can usually manage environments in your home directory yourself with
venv, conda, or Julia’s package manager.How do I compile my own code?
How do I compile my own code?
See the Program Compilation page on the HPCC Wiki for compiler flags and linker hints that pair with the module tree.
Support
Who do I contact for help?
Who do I contact for help?
For job- or account-specific issues, open a ticket at hpchelp.csi.cuny.edu. For general questions or account requests, email HPCHelp@csi.cuny.edu. Don’t email staff directly; those messages aren’t answered.
How can I get one-on-one help?
How can I get one-on-one help?
The HPC Center offers helpdesk hours by appointment at both the Graduate Center and the College of Staten Island. Request a slot through the helpline.