legacy_mpi

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			FROM debian:bullseye-slim

			## Singularity build steps:
			## $ docker build -t tamaas --build-arg USE_MPI=True [--build-arg ...] .
			## $ docker save <image_id> -o tamaas.tar
			## $ singularity build tamaas.sif docker-archive://tamaas.tar

			MAINTAINER Lucas Frérot

			# Install build and runtime dependencies
			RUN apt-get -qq update && apt-get install -qq -y \
			g++ \
			git \
			libboost-dev \
			libthrust-dev \
			libfftw3-dev \
			libfftw3-mpi-dev \
			libopenmpi-dev \
			pybind11-dev \
			python3-dev \
			python3-numpy \
			python3-pip \
			python3-scipy \
			python3-h5py \
			python3-netcdf4 \
			python3-mpi4py \
			python3-h5py-mpi \
			scons \
			&& rm -rf /var/lib/apt/lists/*

			RUN python3 -m pip install --prefix=/usr/local uvw

			# Basic setup
			RUN mkdir -p /src/tamaas
			COPY . /src/tamaas
			RUN rm -rf /src/tamaas/build-*

			# Build arguments
			ARG BACKEND=cpp
			ARG FFTW_THREADS=none
			ARG USE_MPI=False

			# Compiling and installing
			RUN cd /src/tamaas \
			&& scons \
			backend=$BACKEND \
			fftw_threads=$FFTW_THREADS \
			use_mpi=$USE_MPI \
			verbose=true \
			prefix=/usr/local \
			&& scons install \
			&& cd / && rm -rf /src/tamaas

			# Do not use modules in ~/.local
			# Singularity mounts the entire $HOME by default which conflicts if Tamaas
			# is already installed there
			ENV PYTHONNOUSERSITE=1