Update howto-install-AMUSE.rst (#987)

* Update howto-install-AMUSE.rst

Added, at the bottom, how to install AMUSE in user space on Snellius (SURF)

* Update howto-install-AMUSE.rst

Prefer a virtual environment over user install
fix some typos

---------

Co-authored-by: Steven Rieder <steven@rieder.nl>

Author: spzwart

doc/install/howto-install-AMUSE.rst

@@ -170,3 +170,56 @@ individual codes can be build with:
     make {code}.code
 
 with {code} the name of the code in lower case. 
+
+Installation on HPC systems using modules (tested for Snellius)
+***************************************************************
+
+Note that the modules on your local HPC system may be differently named.
+
+.. code-block:: sh
+
+    module load 2022
+    module load foss/2022a
+
+Load python.
+
+.. code-block:: sh
+
+    module load Python/3.10.4-GCCcore-11.3.0 # or another version of python, 3.7 or higher
+
+
+Following AMUSE documentation (see above), download/upgrade the python package: (--user is required by Snellius)
+
+.. code-block:: sh
+
+    mkdir MY_PROJECT_DIR
+    cd MY_PROJECT_DIR
+    python3 -m venv env  # initialise a Python virtual environment, which will contain all the packages we install
+    source env/bin/activate  # activate the virtual environment - this must be repeated every time you log in
+    pip install --upgrade pip
+    cd AMUSE_DIR  # change to where you downloaded AMUSE
+    pip install -r requirements.txt --upgrade  # install/upgrade all required packages
+    pip install matplotlib  # not required but highly recommended
+    pip install -e .
+
+Now you can build the AMUSE framework with 
+
+.. code-block:: sh
+
+    make framework
+
+Finally, build AMUSE individual codes by running from the AMUSE directory:
+
+.. code-block:: sh
+
+    make {code}.code
+
+When you log in again (and in your SLURM scripts), you will need to load the same modules and activate the same environment:
+
+.. code-block:: sh
+
+    module load 2022
+    module load foss/2022a
+    module load Python/3.10.4-GCCcore-11.3.0 # or another version of python, 3.7 or higher
+    cd MY_PROJECT_DIR
+    source env/bin/activate