ADD: first commit

README.md

@@ -2,7 +2,19 @@ WIP
 
 # The PSI Spack Deployment
 
-[Official Spack documentation](https://spack.readthedocs.io/en/latest/)
+## How to use on Merlin7
+
+```bash
+source /afs/psi.ch/sys/spack-rhel7/spack/share/spack/setup-env.sh # can be also include in your .bashrc
+
+spack env list
+spack env activate -d <package> # e.g ffbidx all for whole software stack
+
+# Install env if local development, else skip
+spack install # -v for verbose
+
+spack load <package>
+```
 
 ## How to use on Merlin6
 
@@ -16,4 +28,45 @@ spack env activate -d <package> # e.g ffbidx all for whole software stack
 spack install # -v for verbose
 
 spack load <package>
+
+# The OPAL Spack recipe
+
+[Official Spack documentation](https://spack.readthedocs.io/en/latest/)
+
+## Install Spack
+
+```bash
+cd /scratch/$USER
+git clone -c feature.manyFiles=true https://github.com/spack/spack.git
+. spack/share/spack/setup-env.sh
+
+# Add PSI specific recipes
+cd OPAL/spack
+spack repo add .
+```
+
+## Install OPAL@version
+
+```bash
+spack info opal # Find out which version and which variants you want to set
+
+# Install env if local development, else skip
+spack install opal@2022.1.0 # -v for verbose -j 8 for 8 parallel jobs
+
+# Load environment before launching any scripts
+spack load opal
+
+sbatch ...
+```
+
+## Develop OPAL
+
+```bash
+spack env activate -d OPAL/spack/env/opal/
+
+# $OPAL_SRC_DIRECTORY is where you did the git clone git@gitlab.psi.ch:OPAL/src.git
+spack develop -p $OPAL_SRC_DIRECTORY opal@master
+
+spack install # -v for verbose -j 8 for 8 parallel jobs
+
 ```