Using JuliaSim IDE on the JuliaHub Cloud

What is the JuliaSim IDE?

The JuliaSim IDE is a text-based interface for interacting with the proprietary packages of JuliaSim. This gives the user deep access into all of the functionality of JuliaSim in an interactive Julia REPL, complete with cloud parallelism to automatically scale compute jobs on large numbers of CPUs and GPUs.

How to Access the JuliaSim IDE

To access JuliaSim, first go to On the main page, click on "start for free".

Get started for free on JuliaHub

This will send you to a page that describes the JuliaHub free tier. The JuliaHub free tier has usage limitations on the size and types of compute nodes allowed. To lift these limitations, contact However, if you don't have access, click "Get Free Access Now" to get started:

The JuliaHub free tier explained

This will bring you to a log-in screen and after logging in, you will be presented with a view of the JuliaHub cloud. Click on "more" in the applications tab to see all of the applications you have access to:

The logged in JuliaHub landing page

JuliaSim's cloud IDE is accessed through the "JuliaSim IDE" application. For this, click "Launch":

The JuliaHub application overview

This will present you with a screen for choosing launch configurations, such as the number of cores and GPUs.

!!! If you are a free tier user, then this will be fixed to the free tier system.

JuliaSim IDE advanced launch configuration

When you have chosen a configuration you are happy with, click "Start". This will open up a VS Code IDE.

The JuliaSim IDE

This IDE uses a custom-built Julia system image with all of the JuliaSim packages pre-installed. You can then load proprietary JuliaSim packages via the editor or the Julia terminal.