inital build doc

README.md

-# This is OPAL 2.
+# This is OPAL-X
+
+
+# BUILDING OPAL-X on Merlin
+
+
+## Modules needed
+
+load_ipplomp() { 
+module purge
+module use unstable
+module load cmake/3.25.2
+module load gcc/11.4.0      # does not work for openmp and mixed module load gcc/12.3.0
+module load openmpi
+module load boost
+module load fftw
+module load gtest
+module load gsl
+module load hdf5
+module load H5hut
+module load boost
+module load cuda/12.1.1
+export BOOST_ROOT=$BOOST_DIR
+export OMP_PROC_BIND=spread
+}
+
+## build for Kokkos, FEFFTe and IPPL
+
+% git clone git@github.com:IPPL-framework/ippl-build-scripts.git
+
+set the correct environment, adjust the path in ITB_DOWNLOAD_DIR
+
+% export ITB_DOWNLOAD_DIR=/data/project/general/isodarUQ/adelmann
+% export ITB_SRC_DIR=${ITB_DOWNLOAD_DIR}/downloads
+% export ITB_PREFIX=${ITB_DOWNLOAD_DIR}/install
+% mkdir -p ${ITB_SRC_DIR}
+% mkdir -p ${ITB_PREFIX}
+
+Now you can build serial and with openmp
+
+% ./999-build-everything -t serial  --kokkos --heffte --ippl --export -u
+% ./999-build-everything -t openmp --enable-openmp --kokkos --heffte --ippl --export -u
+
+
+here is still a problem with cuda (./999-build-everything -t mixed --enable-cuda --enable-openmp --kokkos --heffte --ippl --export --arch=PASCAL6 -u)
+
+## Checkout OPAL-X
+
+% git clone git@gitlab.psi.ch:OPAL/opal-x/src.git 
+
+Change to build-script
+
+401-build-opal -r openmp --export -u 
+
+
+
 
 The documentation has been moved to the [Wiki](https://gitlab.psi.ch/OPAL/src/wikis/home).