02:05 PM - 03:50 PM (105 min)

Tutorial: An Introduction to the Einstein Toolkit

Roland Haas (National Center for Supercomputing Applications)

Abstract: This course covers the basics of the Einstein Toolkit:

1. A brief history;
2. what the Einstein Toolkit is and can do;
3. How to install the ET (including prerequisites);
4. How to run the ET and create a rudimentary plot of some of the data generated.

All of the above steps are carried out within a Jupyter notebook. This means that there are no hardware requirements for your computer.

Familiarity with the linux command line is required, and some minimal knowledge of Python is helpful.

Note that this course replicates the material available in the online tutorial.

Tutorial server instructions

For the hands-on part of the tutorial we will be using a cloud based environment to simplify setting up the toolkit, hosted at Perimeter Institute of Theoretical Physics.

There are two different environments offered:

1. for the Einstein Toolkit and Self Force 1D tutorials on Monday and Tuesday
2. for the CarpetX tutorial on Friday

Please make sure to select the correct one for the tutorial you are attending.

All required files are already present in the environment, you do not need to upload any files or download any software.

Each environment will be available only for the duration of each tutorial. Data stored persists in between logins but will be removed after the end of the workshop.

Creating accounts

Please go to https://et2022uidaho.ncsa.illinois.edu and choose a user name and password. Make sure Password and Password2 match, otherwise account creation will fail.

You will also need to enter a security code into the Code field. This code will be shared at the tutorial days via whiteboard and Zoom chat. Please do not share that code with anyone.

Account creation is automatic and your account is active the moment you submit the account creation form.

Logging in

Once your account has been created you can log in via https://et2022uidaho.ncsa.illinois.edu filling out only the Username and Password fields.

Transferring data out of the tutorial environment

Please select the files you would like to download in Jupyter’s file manager then use the Download button in the toolbar above the list of files to download them to your laptop.

Editing files

Jupyter has built in editor for text files that opens automatically if you click on a source code file.

You can create new files using the New button in the file listing and selecting Text document. Once the editor starts up you can rename the file using the File/Rename menu item.

Restoring your account to a pristine state

If your setup has become corrupted and you would like to start over again from a fresh setup, please do the following:

1. start a Terminal using the New button in the file listing
2. remove all files from your home directory using the command rm -rf $HOME
3. stop your environment using the Control Panel button then Stop My Server
4. log back in using https://et2022uidaho.ncsa.illinois.edu

This will restore all files to the state they were at your initial login.

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