Cannot Connect to Hoffman2 10

• ⇅ Connection refused jupyter notebook or JupyterLab on Hoffman2

  Tuesday, March 5, 2024 h2jupynb jupyter jupyter lab jupyter nb jupyter notebooks on h2

• ⇅ VSCode

  Monday, February 5, 2024 code vscode

• ⇅ SSH connection breaks - packet_write_wait/Broken pipe

  Updated: Tuesday, March 10, 2020 broken pipe ipqos packet_write_wait ssh

• ⇅ Why can't I connect to the Hoffman2 cluster from mednet or UCLAHealthSecure?

  Updated: Monday, October 28, 2019 mednet virtual private network vpn

• ⇅ Connecting to the campus VPN

  Updated: Monday, October 28, 2019 virtual private network vpn

User Accounts 3

• ⇅ New Account Request Sponsor Approval

  Friday, February 24, 2023 account management gim sim

• ⇅ Hoffman2 Account Management

  Updated: Friday, February 24, 2023 account management gim sim

• ⇅ I forgot my password - how do I change or reset it?

  Updated: Monday, February 27, 2023

Other 1

• ⇅ Registering as a new sponsor on the Hoffman2 Cluster

  Updated: Monday, October 28, 2019

AI, ML, and GPU programming 1

• ⇅ Using Ollama on Hoffman2

  Thursday, December 19, 2024

Adapting an App for Use on Hoffman2 7

• ⇅ Installig cmdstan version 2.36.0 and cmdstanr on the Hoffman2 Cluster

  Updated: Tuesday, September 9, 2025 cmdstan cmdstanr r

• ⇅ Using Alphafold3

  Tuesday, November 19, 2024

• ⇅ Running Seurat version 5 on the Hoffman2 Cluster

  Updated: Monday, June 2, 2025 r seurat tutorial

• ⇅ Running CrystalExplorer on the Hoffman2 Cluster

  Updated: Tuesday, February 20, 2024 chemistry crystal crystalexplorer

• ⇅ Using AlphaFold on Hoffman2

  Updated: Wednesday, December 20, 2023

Code/Programming/Scripts 2

• ⇅ After loading Intel 13.cs module, why is mpicc/mpicxx/mpif90 still not using Intel compiler?

  Updated: Monday, October 28, 2019

• ⇅ How to load in your environment the previously used Intel compiler

  Updated: Monday, October 28, 2019

Jupyter on Hoffman2 3

• ⇅ Cannot open Jupyter notebook files with 500 : Internal Server Error

  Tuesday, April 9, 2024 jupyter jupyter lab jupyter nb jupyter notebooks on h2

• ⇅ Running Seurat v5 via Jupyter

  Updated: Tuesday, March 12, 2024

• ⇅ Troubleshooting jupyter notebooks session not starting

  Updated: Tuesday, July 9, 2024 jupyter jupyter nb jupyter notebooks on h2

Licensed Software 2

• ⇅ Running Ansys on a local Widows machine while checking out a license on the Hoffman2 cluster (YOU NEED A VALID LICENSE INSTALLED ON THE CLUSTER - WE HAVE NO PUBLIC LICENSES FOR ANSYS)

  Updated: Thursday, March 10, 2022

• ⇅ ssh port forwarding from windows computers

  Updated: Monday, October 28, 2019

Software Installation Request (Systemwide) 1

• ⇅ Tidyverse

  Friday, May 23, 2025 r tidyverse

Software Installation Help (Project/Home directory) 10

• ⇅ Installation of package leidenase in R

  Monday, April 28, 2025 igraph leidenbase r

• ⇅ Installation of package igraph in R

  Updated: Friday, July 18, 2025 igraph r r igraph

• ⇅ Cellbender on the Hoffman2 Cluster

  Updated: Wednesday, July 10, 2024

• ⇅ NGLview on the Hoffman2 Cluster

  Updated: Wednesday, January 31, 2024 h2jupynb jupyter lab jupyter nb jupyter notebooks on h2 nlgview quantum chemistry

• ⇅ Installing Gossamer bioinformatics suite in your $HOME

  Thursday, December 5, 2019 cmake electus goss gossamer gossple xenome

Remote Desktop (NX/X2Go) 1

• ⇅ NoMachine: Verify host identification message always appears when connecting to remote host

  Thursday, August 15, 2024

Other 1

• ⇅ Qiime2 on the Hoffman2 Cluster

  Updated: Monday, September 26, 2022

How to Submit a Job 6

• ⇅ qsub command not found

  Updated: Monday, October 28, 2019

• ⇅ Requesting the appropriate amount of resources for jobs on the Hoffman2 cluster

  Updated: Monday, October 28, 2019

• ⇅ Why cannot I submit too many individual jobs?

  Updated: Monday, October 28, 2019

• ⇅ How do I request large memory to run multi-threaded (single node) program?

  Updated: Monday, October 28, 2019

• ⇅ How do I request large memory to run sequential (1-core) program?

  Updated: Monday, October 28, 2019

Job Not Starting 2

• ⇅ Why is my job still waiting in the queue?

  Updated: Monday, October 28, 2019 job scheduler sge uge wait

• ⇅ Why my highp job did not start in 24 hours?

  Updated: Monday, October 28, 2019

Job Status 2

• ⇅ I have a lot of jobs in error state E. How do I find out what the problem is?

  Updated: Monday, October 28, 2019

• ⇅ An OIT/IDRE consultant sent me an email about a lot of left over jobs running under my userid. How do I delete them?

  Updated: Monday, October 28, 2019

Other 2

• ⇅ $TMPDIR for interactive job on Hoffman2

  Updated: Monday, October 28, 2019

• ⇅ How many cores does my job get with "exclusive"?

  Updated: Monday, October 28, 2019

Node and Storage Purchases 3

If you wish to purchase or renew storage, please go to https://store.idre.ucla.edu. For node purchases or for problems making a storage purchase, please create a new support ticket here.

• ⇅ What is the lifetime of a compute node?

  Monday, May 1, 2023

• ⇅ Purchasing HPC Storage on the Hoffman2 Cluster

  Updated: Wednesday, February 12, 2025 buying ordering purchasing

• ⇅ Purchasing nodes on the Hoffman2 Cluster

  Updated: Thursday, April 14, 2022

Other 1

• ⇅ Hoffman2 HPC Storage: Home, project and nobackup directories

  Updated: Monday, October 28, 2019 directories directory home hpc nobackup project storage

Access / Permissions / Quotas 1

• ⇅ Data Sharing on Hoffman2

  Updated: Friday, May 1, 2020

Cloud Storage (AWS, Box, etc.) 1

• ⇅ Can I use Dropbox on Hoffman2?

  Updated: Monday, October 28, 2019

File Transfer and Globus 5

• ⇅ Moving data from Google Drive to the Hoffman2 Cluster

  Wednesday, April 3, 2024

• ⇅ Instructions on how to install the aspera connect tool on Hoffman2

  Updated: Monday, November 13, 2023

• ⇅ What endpoint do I use with Globus?

  Friday, October 15, 2021

• ⇅ High-speed file transfer with Globus

  Updated: Monday, October 28, 2019

• ⇅ Globus: Your task is currently receiving the error: ENDPOINT_TOO_BUSY

  Updated: Monday, October 28, 2019

General Requests 4

• ⇅ Restoring files from project directory snapshots

  Wednesday, February 5, 2025 backup restore snapshot

• ⇅ I deleted a file in my home directory. How can I recover it?

  Updated: Monday, October 28, 2019

• ⇅ /u/scratch file retention policy

  Updated: Wednesday, September 3, 2025

• ⇅ Hoffman2 Cluster Filesystem Classifications

  Updated: Monday, October 28, 2019

Policies 1

• ⇅ How can I acknowledge Hoffman2 Shared Cluster in my presentations or publications?

  Updated: Monday, October 28, 2019