website: more on nersc

Author: huiwanpnnl

docs/nersc/jupyter_at_nersc.md

@@ -5,16 +5,40 @@ To use the QuickView family of tools at NERSC, you first need to login to Jupyte
 
 ![JupyterHub login](./login/login-00.png)
 
-Once you've enter your __login__ and __password__ you will need to fill an OTP (One Time Password).
+Clicking on the orange "Sign in with Federated Identity at NERSC" button will
+bring you to a new page to enter your __username__ and __password__;
+after that, you will need to fill an OTP (One Time Password):
 
 ![](./login/login-01.png)
 
-After that, you will be presented with a list of options for where you would like to run your application.
+After a successful login, you will be presented with a list of options for where you would like to run your application.
 For the QuickView family, it is better to have hardware with a GPU to allow interactive rendering.
+Keep in mind, though, that time spent on anywhere else than a login node will be charged to your project's allocation.
+Hence, after you are done with the analysis, remember to
+[shut down the service](#shut-down-the-server-when-you-are-done) to avoid wasteful use of the resources. 
 
 ![](./login/login-02.png)
 
-Once you picked your target location and allocation, you will have to wait for some seconds for the service to start.
+After clicking on one of the "start" buttons in the image above,
+you will see something like the screenshot below and will
+likely have to wait for some seconds for the service to be ready.
 
 ![](./login/login-03.png)
 
+# Shut down the server when you are done
+
+::: warning Reminder: Shut down the server when you are done.
+After finishing your analysis, please remember to shut down the connection to your selected
+server (node) to stop the charging of hours to your project's allocation.
+This is explained at the end of
+[this video](https://docs.nersc.gov/beginner-guide/#keypad-entry-log-in-using-jupyter),
+and below is a recap of the steps (clicks):
+- go to the JupytherHub window/tab in your browser,
+- click `File` in the top-left corner,
+- scroll down and choose `Hub Control Panel`,
+- in the Control Panel brought up in a new browser tab/window, click on the red "stop" button
+  for the server to be shut down. An example is shown in the screenshot below.
+
+![](./login/login-04.png)
+:::
+

docs/nersc/perlmutter-run-quickview.md

@@ -30,6 +30,8 @@ Once connected,
 - Finally select the variables you want to load and inspect.
   ![](./quickview/quickview-variable-selection.png)
 
+## Shut down the server when you are done
+
 ::: warning Reminder: Shut down the server when you are done.
 After finishing your analysis, please remember to shut down the connection to your selected
 server (node) to stop the charging of hours to your project's allocation.