Installing your own version of Qmcpack

These instructions are for users who need to install their own version of Qmcpack.

Do not load the 'qmcpack' module. If you have a 'qmcpack' module loaded, unload it:

module unloadqmcpack

Step 1: Create a new directory where you want to install Qmcpack:

mkdir -p qmcpack/src
cd qmcpack/src/

Step 2: Download the version of Qmcpack you want from the GitHub repo:
tar xvf v3.10.0.tar.gz
cd qmcpack-3.10.0/

Step 3: Load the newer compiler module and configure it with custom flags.

module load mpi/openmpi_4.0.5_intel_2020.2_slurm20
module load intel/2020.2 cuda/11.1.1
module load hdf5/1.12.0_openmpi_4.0.5_intel_2020.2_slurm20
module load python/3.6.6
module load boost/1.68
module load cmake/3.15.4

cd build

cmake -DCMAKE_INSTALL_PREFIX=/users/<username>/qmcpack/ -DCMAKE_C_COMPILER=mpicc -DCMAKE_CXX_COMPILER=mpicxx \
-DQE_BIN=/gpfs/runtime/opt/quantumespresso/6.4_openmpi_4.0.5_intel_2020.2_slurm20/bin/ \

More configuration options can be found here.

The --prefix PATH will be replaced by your custom install location

Step 4: If you are happy with the configure flags then install them by:

make -j 8
make install 

Step 5 (Optional): Adding Qmcpack to your path

Add the following lines to your ~/.bashrc

export PATH=/users/<username>/qmcpack/bin:$PATH
export PYTHONPATH=/users/<username>/qmcpack/qmcpack-3.10.0/nexus/lib:$PYTHONPATH

Restart the Oscar session or source .bashrc

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