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--- skill-tree:use:1:5:b [2020/07/19 21:27] – lucy
+++ skill-tree:use:1:5:b [2026/10/06 10:30] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
-# USE1.5-B Remote Access
+# USE1.5 Software Environment
-# Background
-An HPC system is accessed remotely and has its particular file systems that contain data and programs to execute.
+HPC systems have generally installed multiple versions of several essential software tools and software environments.
-Learning the ways of general interaction with the remote system and the tools involved is essential for newcomers.
+Package management tools provide access to this wide variety of software.
+A user has to load the software for the current shell session to make commands available.
-Users must connect to an HPC system typically using the Secure Shell (SSH), which then starts a shell and allows the interactive access.
+Some widely available software tools include:
-When the user disconnects, such a session is terminated.
+    * Environment modules
-A server-sided session that persists after disconnection enables the user to execute long-running programs remotely and allows the continuation of a previous session seamlessly.
+    * SPACK
-Data transfer between a local user system (e.g., desktop or laptop) and a remote system requires special tools.
+    * Conda
-Interactive access is also allowed.
+    * EasyBuild
+    * European Environment for Scientific Software Installations (EESSI)
-The tools discussed here are generally valid for systems using Linux, Mac, Windows, and also mobile devices.
+## Learning Outcomes
-# Aim
+* Query available software using the package manager and select the appropriate versions for deployment in the session environment.
-  * To understand how to access a remote server and transfer data.
+* Describe the MODULEPATH variable and understand shell variables relevant for executing and building software
+* Query information about packages using SPACK and install as well as load and unload software modules
+* Understand what conda environments are for and how a user can install their own environments
+* Understand how EasyBuild is used to automate the building, installation, and management of scientific software stacks on HPC systems.
+* Describe the purpose of EESSI and use its software stack to access portable, optimised scientific applications across different HPC infrastructures.
-# Outcomes
+## Subskills
-  * Describe how SSH-authentication works:
-    * Password authentication.
+* [[skill-tree:use:1:5:1:b]]
-    * Public-key authentication.
+* [[skill-tree:use:1:5:2:b]]
-    * The role of an authentication agent and the security implications.
+* [[skill-tree:use:1:5:3:b]]
-  * Generate an SSH public/private key under Linux.
+* [[skill-tree:use:1:5:4:b]]
-  * Register a key for public-key authentication using ssh-copy-id.
+* [[skill-tree:use:1:5:5:b]]
-  * Perform a remote login from Linux using SSH.
-  * Use SSH-agent or Windows equivalents.
-  * Use Agent forwarding to connect to a third HPC system from an HPC system that you logged into with ssh from your computer.
-  * Know when to use and how to create a config file.
-  * Utilize tools to transfer data between the local and remote system:
-    * scp
-    * sftp
-    * rsync (-avz)
-  * Describe how SSHFS allows mounting a remote directory to a local directory for interactive usage (Mac/Linux only), e.g. for copying files or to transparently use your favourite graphical text editor on the local computer for editing files on the remote cluster.
-  * Utilize screen and tmux to preserve a session between logins:
-    * Creation of a session.
-    * Detaching from the current session.
-    * Resuming a previous session.
-# Subskills
-  * [[skill-tree:sd:1:2:5:1:1:3:1:b]]