diff --git a/.github/workflows/test-everything.yml b/.github/workflows/test-everything.yml
index c4adcafbc5e4cde1d8aa86453e76dc613dc4c4ea..27af676d65172532509db12c3ab4ac2448bfe7d5 100644
--- a/.github/workflows/test-everything.yml
+++ b/.github/workflows/test-everything.yml
@@ -112,32 +112,6 @@ jobs:
python-version: ${{ matrix.config.py }}
- name: Update pip
run: python -m pip install --upgrade pip
- # - name: OpenMPI cache
- # uses: actions/cache@v3
- # id: cache-ompi
- # with:
- # path: ~/openmpi-4.1.4
- # key: ${{ matrix.config.os }}-openmpi-4.1.4-${{ matrix.config.cxx }}
- # - name: Build OpenMPI
- # if: ${{ steps.cache-ompi.outputs.cache-hit != 'true' }}
- # run: |
- # echo cache-hit='${{ steps.cache-ompi.outputs.cache-hit }}'
- # cd ~
- # wget https://download.open-mpi.org/release/open-mpi/v4.1/openmpi-4.1.4.tar.gz
- # tar -xvf ./openmpi-4.1.4.tar.gz
- # cd openmpi-4.1.4
- # ./configure --disable-mpi-fortran
- # make -j4
- # - name: Install OpenMPI
- # run: |
- # echo "Going to install ompi"
- # cd ~
- # cd openmpi-4.1.4
- # sudo make install
- # cd -
- # - name: Update shared library cache
- # if: ${{ startsWith(matrix.config.os, 'ubuntu') }}
- # run: sudo ldconfig
- name: Install Python packages
run: pip install numpy sphinx svgwrite sphinx-rtd-theme mpi4py pandas seaborn
- name: Clone w/ submodules
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7370b16b52d358be67439eda44dc8b1841d223e3..0773d6a1cefcb215b1ec700eac2c861aa99bd867 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -126,11 +126,7 @@ if(ARB_GPU STREQUAL "cuda")
set(CMAKE_CUDA_HOST_COMPILER ${CMAKE_CXX_COMPILER})
enable_language(CUDA)
find_package(CUDAToolkit)
- if(CUDAToolkit_VERSION_MAJOR GREATER 10)
- set(CMAKE_CUDA_ARCHITECTURES 60 70 80)
- else()
- set(CMAKE_CUDA_ARCHITECTURES 60 70)
- endif()
+ set(CMAKE_CUDA_ARCHITECTURES 60 70 80)
# We _still_ need this otherwise CUDA symbols will not be exported
# from libarbor.a leading to linker errors when link external clients.
# Unit tests are NOT external enough. Re-review this somewhere in the
diff --git a/doc/dependencies.csv b/doc/dependencies.csv
index d325bd6e7331ad5f6250b4bd1cbf2f1831f940e6..d630c1b4285453514668db546cbcd61d61e8a1e3 100644
--- a/doc/dependencies.csv
+++ b/doc/dependencies.csv
@@ -1,18 +1,18 @@
Build option/target,Tool name,Minimum version,Notes,Update criteria
---,CMake,3.18,,"* Is available as a module on HPC systems
+--,CMake,3.19,,"* Is available as a module on HPC systems
* When arbitrary changes in more recently released versions make supported"
--,C++ compiler,,C++17 support. See below,
---,GCC,8.4.0,"Use of ``std::fs`` is prohibited, despite being included in major compilers with C++17, on account of MacOS 10.14 not having the required syscall. We might lift this.","* it is supported by the minimum version of CUDA.
+--,GCC,9.0.0,,"* it is supported by the minimum version of CUDA.
* it is available either by default or can be installed using standard package manager on the supported Linux versions."
---,Clang,8.0,Needs GCC 8 or later for standard library.,
---,Apple Clang,9,Apple LLVM version 9.0.0 (clang-900.0.39.2),
+--,Clang,10.0,Needs GCC 9 or later for standard library.,
+--,Apple Clang,11,Apple LLVM version 11.0.0 (clang-1100.0.33.8),
ARB_GPU,Hip Clang,ROCm 3.9,HIP support is currently experimental.,
-ARB_GPU,CUDA,10.0,,"* It is available on all of the target HPC systems (Piz Daint, Juwels Booster)"
+ARB_GPU,CUDA,11.0,,"* It is available on all of the target HPC systems (Piz Daint, Juwels Booster)"
ARB_WITH_NEUROML,libxml2,,,
ARB_WITH_MPI,MPI,,Many MPI implementations are supported.,
"ARB_WITH_MPI, ARB_WITH_PYTHON ",mpi4py,3.1.0,Minimum version depends on compatiblity with your Python and MPI versions. 3.1.0 is the first release to support Python > 3.8.,
html, .. literalinclude:: ../requirements.txt,,See ``doc/requirements.txt``,
-unit,googletest,,source copy ``test/gtest.*``,
+unit,googletest,,source copy ``ext/gtest.*``,
bench,Google-benchmark,,submodule ``ext/google-benchmark``,
--,json,,source copy ``ext/json``,
--,random123,,source copy ``ext/random123``,
diff --git a/doc/install/build_install.rst b/doc/install/build_install.rst
index 1f1e721fc24d451b60adbdde4942fc4432ae1eb1..a7486fbe823db55a01f1aa3ba70b15acc1121940 100644
--- a/doc/install/build_install.rst
+++ b/doc/install/build_install.rst
@@ -54,6 +54,10 @@ A full list of dependencies and minimum versions supported thereof is maintained
:widths: 10, 20, 10, 70, 1
:header-rows: 1
+Note, that while we consider these to be our minimally supported versions, Arbor
+might still compile and work fine using older versions. We will, however, not
+offer much support for these versions, nor will we fix issues specific to them.
+
Minimum requirements
--------------------
@@ -161,8 +165,8 @@ them to the base exception types ``arbor_exception`` and
Documentation
~~~~~~~~~~~~~~
-To build a local copy of the html documentation that you are reading now, you will need to
-install ``Sphinx <http://www.sphinx-doc.org/en/master/>`_.
+To build a local copy of the html documentation that you are reading now, you
+will need to install `Sphinx <http://www.sphinx-doc.org/en/master/>`_.
.. _install-downloading:
@@ -605,7 +609,7 @@ on your target system that are not covered here, please make an issue on the
Arbor `Github issues <https://github.com/arbor-sim/arbor/issues>`_ page.
We will do our best to help you directly, and update this guide to help other users.
-.. warn::
+.. warning::
On many HPC systems a tool called ``module`` or ``ml`` is installed, which
use the ``CPATH`` environment variable to set up include paths for building.
@@ -670,6 +674,11 @@ The first thing to do is change this module, which by default is set to the Cray
programming environment, to a compiler that can compile Arbor.
For example, to use the GCC compilers, select the GNU programming environment:
+.. note::
+
+ While the specific versions mentioned here are outdated, the general workflow
+ is still correct.
+
.. code-block:: bash
module swap PrgEnv-cray PrgEnv-gnu