website: start to revise info about NERSC

Author: huiwanpnnl

docs/.vitepress/config.mjs

@@ -18,7 +18,7 @@ export default defineConfig({
       { text: "News", link: "/news" },
       { text: "Gallery", link: "/gallery/" },
       { text: "User's Guide", link: "/guides/reminders" },
-      { text: "At NERSC", link: "/nersc/login" },
+      { text: "At NERSC", link: "/nersc/index" },
       { text: "Repo", link: "https://github.com/Kitware/QuickView" },
       { text: "Bugs and Requests", link: "https://github.com/Kitware/QuickView/issues" },
     ],

docs/guides/install_and_launch.md

@@ -1,4 +1,4 @@
-# Instal and launch
+# Install and launch
 
 All tools of the **QuickView** family are available as
 **conda** packages as well as **pre-compiled desktop bundles**

docs/index.md

@@ -11,13 +11,13 @@ hero:
   actions:
     - theme: brand 
       text: Installation
-      link: /guides/installation
+      link: /guides/install_and_launch
     - theme: brand 
       text: User's Guide 
       link: /guides/reminders
     - theme: brand 
       text: Using it at NERSC
-      link: /nersc/
+      link: /nersc/index
 
 features:
   - title: Purpose

docs/nersc/index.md

@@ -0,0 +1,46 @@
+# The QuickView tool family at NERSC
+
+Our tools have been installed at NERSC,
+the National Energy Research Scientific Computing Center,
+and are continually updated there.
+Below are instructions for users who would like to use our installations.
+
+User's who would like to understand how our installation was done
+or how to have their own installation are referred to [this page](installation_at_nersc.md).
+
+## Quickstart for users familiar with JupyterHub
+
+- Login to [JupytherHub](https://jupyter.nersc.gov/hub/login) and start a terminal window.
+- Optional but recommended: in the terminal, use the `cd` command to go to the directory where your data files are located.
+- QuickView version 2 can be launched using the following command:
+```
+/global/common/software/m4359/quickview2
+```  
+- QuickCompare can be launched using the following command:
+```
+/global/common/software/m4359/quickcompare
+```
+- After a few seconds, the Terminal window will say "Use URL below to connect to the application:"
+  and shows a URL starting with `https://`.
+  A click on the URS will bring up the graphical UI in a brower window.
+
+::: tip Tip: Choosing a server for your analysis session
+JupyterHub's control panel allows users to choose from serveral different types of resources
+for their computing and analyais needs, including, e.g., login node, shared GPU node,
+exclusive nodes, etc. Since login nodes are shared by users and hence can get very busy
+or run into memory constraints, we recommend that users choose a shared GPU node
+or an exclusive node and user our tools there.
+
+Regardless of which type of node is chosen, the same commands (as listed above)
+are used to launch our tools in the QuickView family.
+:::
+
+## For NERSC user's who have not used JupyterHub
+
+Please visit [NERSC's Jupyter documentation](https://docs.nersc.gov/services/jupyter/)
+to learn how to use the JupyterHub service.
+
+## If you do not yet have any user account at  NERSC
+
+Please visit [this page](https://docs.nersc.gov/accounts/#obtaining-an-account)
+to understand how to get started.