RAJA 2023.6.01 build issues

[tomdeakin]

The CI currently skips RAJA checking (Skipping RAJA models due to CMake version requirement), but on building manually it seems with RAJA 2023.6.01 the code failed to build because of a missing forall_impl.

[tom91136]

RAJA does not support CMake older than 3.20. We have a successful build in the CI for 3.20 and 3.24 for both OpenMP and CUDA: https://github.com/UoB-HPC/BabelStream/actions/runs/6763920213/job/18381602393#step:39:495

[tom91136]

For reference:

BabelStream/src/ci-test-compile.sh

Lines 190 to 198 in 8389fc4

	if check_cmake_ver "3.20.0"; then
	run_build "cuda_$name" "${GCC_CXX:?}" raja "$cxx -DRAJA_IN_TREE=${RAJA_SRC:?} \
	-DENABLE_CUDA=ON \
	-DTARGET=NVIDIA \
	-DCUDA_TOOLKIT_ROOT_DIR=${NVHPC_CUDA_DIR:?} \
	-DCUDA_ARCH=$NV_ARCH"
	else
	echo "Skipping RAJA models due to CMake version requirement"
	fi