Use JupyterLab@NERSC

BerkeleyGW-Team

08/18/2025

Log in with your training account

Go to: https://jupyter.nersc.gov/hub/login

If jupiter redirect you automatically to your usual NERSC’s account, open a new windows in incognito mode.

Click here.

Select institution (NERSC should be available for training accounts).

Enter training account username and password.

Start a Perlmutter session.

Wait for server to start up (up to a min.)

Start a terminal window

Do your calculations in this window.

You can open multiple windows by clicking “+” here or click File > New > your choice

Quickly navigate to $SCRATCH and monitor the files

Plotting with Jupyter Notebook

Start a Jupyter Notebook

Plotting with Jupyter Notebook

Right click to select Rename to rename the file

Reopen an existing Notebook file

Double click to open the Notebook file in a new window.

Plotting with Jupyter Notebook

• If you are not familiar with Jupyter Notebook, check the following youtube channel for a plotting tutorial: https://www.youtube.com/watch?v=Hr4yh1_4GlQ
• Or this website: https://www.tutorialspoint.com/jupyter/jupyter_notebook_plotting.htm

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Simple example: sine function

Run script

Simple example: sine function

Read data from file

Use io.open and np.genfromtxt to read a file

Replace workdir with your own path

Choose the name of the file from which you want to read

Save a plot

Use plt.savefig to save a plot.

Choose the path and the name of your image file.

View an image file

Double click to open the image file in a new window.