CHTC — Center for High Throughput Computing
CHTC — Center for High Throughput Computing
UW-Madison College of Computing, Data & Information SciencesMorgridge Institute for Research

Log in to CHTC

Introduction

This guide outlines login information for CHTC services, including how to log in to CHTC servers after your account has been created, access point information, and how to re-use ssh connections to reduce the frequency of using Duo Multi-factor Authentication (MFA).

If you don't have an account, see our getting started page.

Before you log in

After obtaining a CHTC account, you will need the following to log into our CHTC access points:

Log in

You can log in to the access points two different ways — from a terminal program or using an SSH program.

See this table for a list of terminal/SSH programs.

Option 1: Log in with a terminal

  1. Open a terminal window. Enter the following command, where user is your username (typically your NetID) and hostname.chtc.wisc.edu is your assigned access point in your welcome email.

    ssh username@hostname.chtc.wisc.edu
    
  2. You will be prompted for your password, then for Duo MFA authentication.

Option 2: Log in with an SSH program

Each SSH program in the table below has a different procedure, but generally, you'll need to configure it with your username and your hostname.

Log out

Log out by entering exit into the command line. Any submitted jobs will run and return output without you needing to be connected.

SSH programs

This is a non-exhaustive list of programs that can be used to log into CHTC servers or transfer files.

Operating systemProgramTypeSupports persistent connectionsNotes
LinuxTerminalterminal✓pre-installed
MacOSTerminalterminal✓pre-installed
Cyberduckfile-transfer utility✓
WindowsTerminal (PowerShell)terminalXpre-installed
Terminal (Windows Subshell for Linux)terminal✓recommended for users familiar with the Unix shell
MobaXTermterminal, SSH client, file-transfer utility✓
WinSCPfile-transfer utility✓
PuTTYSSH client✓
Linux, MacOS, WindowsVSCodeterminal, limited file-transfer utility, integrated code editoronly on MacOS/Linux/WSLsetup (ignore steps on creating a virtual machine)
Linux, MacOS, Chrome, and moreMoshterminalX

Hostname / Access point information

Please use the access point specified in your welcome email.

High Throughput Computing (HTC) System
ap2001.chtc.wisc.edu
ap2002.chtc.wisc.edu
High Performance Computing (HPC) System
spark-login.chtc.wisc.edu

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