Geometry: Fix Mixed Precision Builds #782

	name: 🐧 HIP

	on: [push, pull_request]

	concurrency:
	group: ${{ github.ref }}-${{ github.head_ref }}-hip
	cancel-in-progress: true

	jobs:
	build_hip:
	name: HIP
	runs-on: ubuntu-20.04
	env:
	CXXFLAGS: "-Werror -Wno-deprecated-declarations -Wno-error=pass-failed -fno-operator-names"
	CMAKE_GENERATOR: Ninja
	if: github.event.pull_request.draft == false
	steps:
	- uses: actions/checkout@v3
	- name: install dependencies
	shell: bash
	run: .github/workflows/dependencies/hip.sh
	- name: build ImpactX
	shell: bash
	run: \|
	source /etc/profile.d/rocm.sh
	hipcc --version
	which clang
	which clang++
	export CXX=$(which clang++)
	export CC=$(which clang)

	python3 -m pip install -U pip setuptools wheel
	python3 -m pip install -U cmake

	# "mpic++ --showme" forgets open-pal in Ubuntu 20.04 + OpenMPI 4.0.3
	# https://bugs.launchpad.net/ubuntu/+source/openmpi/+bug/1941786
	# https://github.com/open-mpi/ompi/issues/9317
	export LDFLAGS="-lopen-pal"

	cmake -S . -B build \
	-DCMAKE_VERBOSE_MAKEFILE=ON \
	-DAMReX_GPU_BACKEND=HIP \
	-DAMReX_AMD_ARCH=gfx900 \
	-DAMReX_SPACEDIM="1;2;3"
	cmake --build build --target pip_install -j 2

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