diff --git a/.github/workflows/bot-pr-comment.yml b/.github/workflows/bot-pr-comment.yml
deleted file mode 100644
index 1d83a4df0ae..00000000000
--- a/.github/workflows/bot-pr-comment.yml
+++ /dev/null
@@ -1,89 +0,0 @@
-on:
-  issue_comment:
-    types: [created]
-name: OnCommentPR
-concurrency:
-  group: ${{ github.workflow }}-${{ (github.head_ref && github.ref) || github.run_id }}
-  cancel-in-progress: true
-jobs:
-  label:
-    runs-on: ubuntu-latest
-    if: github.event.issue.pull_request != '' && github.event.comment.body == 'label!' && (github.event.comment.author_association == 'COLLABORATOR' || github.event.comment.author_association == 'MEMBER' || github.event.comment.author_association == 'OWNER')
-    steps:
-    - name: Checkout the latest code (shallow clone)
-      uses: actions/checkout@v2
-      with:
-        ref: develop
-    - name: Add appropriate labels
-      env:
-        GITHUB_TOKEN: ${{ secrets.BOT_TOKEN }}
-      run: cp --preserve .github/label.sh /tmp && /tmp/label.sh
-  check_format:
-    name: check-format
-    runs-on: ubuntu-18.04
-    if: github.event.issue.pull_request != '' && github.event.comment.body == 'check-format!' && (github.event.comment.author_association == 'COLLABORATOR' || github.event.comment.author_association == 'MEMBER' || github.event.comment.author_association == 'OWNER')
-    steps:
-    - name: Checkout the latest code (shallow clone)
-      uses: actions/checkout@v2
-      with:
-        ref: develop
-    - name: Check for formatting changes
-      env:
-        GITHUB_TOKEN: ${{ secrets.BOT_TOKEN }}
-      run: cp --preserve .github/check-format.sh /tmp && /tmp/check-format.sh
-    - name: Upload code formatting patch
-      if: failure()
-      uses: actions/upload-artifact@v2
-      with:
-          name: patch
-          path: format.patch
-  format:
-    name: format
-    runs-on: ubuntu-18.04
-    if: github.event.issue.pull_request != '' && github.event.comment.body == 'format!' && (github.event.comment.author_association == 'COLLABORATOR' || github.event.comment.author_association == 'MEMBER' || github.event.comment.author_association == 'OWNER')
-    steps:
-    - name: Checkout the latest code (shallow clone)
-      uses: actions/checkout@v2
-      with:
-        ref: develop
-        persist-credentials: false
-    - name: Commit formatting changes
-      env:
-        GITHUB_TOKEN: ${{ secrets.BOT_TOKEN }}
-      run: cp --preserve .github/format.sh /tmp && /tmp/format.sh
-  rebase:
-    name: rebase
-    if: github.event.issue.pull_request != '' && github.event.comment.body == 'rebase!' && (github.event.comment.author_association == 'COLLABORATOR' || github.event.comment.author_association == 'MEMBER' || github.event.comment.author_association == 'OWNER')
-    runs-on: ubuntu-latest
-    steps:
-    - name: Checkout the latest code
-      uses: actions/checkout@v2
-      with:
-        ref: develop
-        fetch-depth: 0
-        persist-credentials: false
-    - name: Automatic Rebase
-      env:
-        GITHUB_TOKEN: ${{ secrets.BOT_TOKEN }}
-      run: cp --preserve .github/rebase.sh /tmp && /tmp/rebase.sh
-  format-rebase:
-    name: format-rebase
-    if: github.event.issue.pull_request != '' && github.event.comment.body == 'format-rebase!' && (github.event.comment.author_association == 'COLLABORATOR' || github.event.comment.author_association == 'MEMBER' || github.event.comment.author_association == 'OWNER')
-    runs-on: ubuntu-18.04
-    steps:
-    - name: Checkout the latest code
-      uses: actions/checkout@v2
-      with:
-        ref: develop
-        fetch-depth: 0
-        persist-credentials: false
-    - name: Automatic Formatting Rebase
-      env:
-        GITHUB_TOKEN: ${{ secrets.BOT_TOKEN }}
-      run: cp --preserve .github/format-rebase.sh /tmp && /tmp/format-rebase.sh
-    - name: Upload code formatting diffs
-      if: success()
-      uses: actions/upload-artifact@v2
-      with:
-          name: patch
-          path: diff.patch
diff --git a/.github/workflows/bot-pr-created.yml b/.github/workflows/bot-pr-created.yml
deleted file mode 100644
index 30b5e1c9f61..00000000000
--- a/.github/workflows/bot-pr-created.yml
+++ /dev/null
@@ -1,20 +0,0 @@
-on:
-  pull_request_target:
-    types: [opened]
-name: OnNewPR
-concurrency:
-  group: ${{ github.workflow }}-${{ (github.head_ref && github.ref) || github.run_id }}
-  cancel-in-progress: true
-jobs:
-  label:
-    runs-on: ubuntu-latest
-    if: github.event.pull_request.author_association == 'COLLABORATOR' || github.event.pull_request.author_association == 'MEMBER' || github.event.pull_request.author_association == 'OWNER'
-    steps:
-      - name: Checkout the latest code (shallow clone)
-        uses: actions/checkout@v2
-        with:
-          ref: develop
-      - name: Add appropriate labels
-        env:
-          GITHUB_TOKEN: ${{ secrets.BOT_TOKEN }}
-        run: .github/label.sh
diff --git a/.github/workflows/bot-pr-updated.yml b/.github/workflows/bot-pr-updated.yml
deleted file mode 100644
index 402342ee359..00000000000
--- a/.github/workflows/bot-pr-updated.yml
+++ /dev/null
@@ -1,62 +0,0 @@
-on:
-  pull_request_target:
-    types: [opened,synchronize]
-name: OnSyncPR
-concurrency:
-  group: ${{ github.workflow }}-${{ (github.head_ref && github.ref) || github.run_id }}
-  cancel-in-progress: true
-jobs:
-  check-format:
-    runs-on: ubuntu-18.04
-    if: github.event.pull_request.author_association == 'COLLABORATOR' || github.event.pull_request.author_association == 'MEMBER' || github.event.pull_request.author_association == 'OWNER'
-    steps:
-      - name: Checkout the latest code (shallow clone)
-        uses: actions/checkout@v2
-        with:
-          ref: develop
-      - name: Check for formatting changes
-        env:
-          GITHUB_TOKEN: ${{ secrets.BOT_TOKEN }}
-        run: cp .github/check-format.sh /tmp && /tmp/check-format.sh
-      - name: Upload code formatting patch
-        if: failure()
-        uses: actions/upload-artifact@v2
-        with:
-          name: patch
-          path: format.patch
-  abidiff:
-    runs-on: ubuntu-latest
-    if: github.event.pull_request.author_association == 'COLLABORATOR' || github.event.pull_request.author_association == 'MEMBER' || github.event.pull_request.author_association == 'OWNER'
-    env:
-      CMAKE_FLAGS: -DBUILD_SHARED_LIBS=ON -DCMAKE_BUILD_TYPE=DEBUG -DGINKGO_BUILD_TESTS=OFF -DGINKGO_BUILD_EXAMPLES=OFF -DGINKGO_BUILD_BENCHMARKS=OFF -DGINKGO_BUILD_HWLOC=OFF -DGINKGO_BUILD_REFERENCE=OFF -DGINKGO_BUILD_OMP=OFF -DGINKGO_BUILD_CUDA=OFF -DGINKGO_BUILD_HIP=OFF -DGINKGO_BUILD_DPCPP=OFF
-    steps:
-      - name: Checkout the new code (shallow clone)
-        uses: actions/checkout@v2
-        with:
-          path: new
-          ref: ${{ github.event.pull_request.head.ref }}
-      - name: Checkout the old code (shallow clone)
-        uses: actions/checkout@v2
-        with:
-          path: old
-          ref: ${{ github.event.pull_request.base.ref }}
-      - name: Install abidiff
-        run: sudo apt-get install abigail-tools
-      - name: Build both libraries
-        run: |
-          mkdir build-new
-          mkdir build-old
-          cmake -B build-new new ${{ env.CMAKE_FLAGS }}
-          cmake -B build-old old ${{ env.CMAKE_FLAGS }}
-          cmake --build build-new -j`nproc`
-          cmake --build build-old -j`nproc`
-      - name: Compute abidiff
-        env:
-          GITHUB_TOKEN: ${{ secrets.BOT_TOKEN }}
-        run: old/.github/abidiff.sh
-      - name: Upload ABI diff
-        if: failure()
-        uses: actions/upload-artifact@v2
-        with:
-            name: abi
-            path: abi.diff
diff --git a/.github/workflows/joss.yml b/.github/workflows/joss.yml
deleted file mode 100644
index 92aca560633..00000000000
--- a/.github/workflows/joss.yml
+++ /dev/null
@@ -1,37 +0,0 @@
-name: JOSS-build
-
-on:
-  push:
-    paths:
-    - 'doc/joss/**'
-
-jobs:
-  joss-generate:
-    name: joss-pandoc 
-    runs-on: [ubuntu-latest] 
-
-    steps:
-    - name: Checkout the latest code (shallow clone)
-      uses: actions/checkout@v2
-
-    - name: setup
-      run: sudo apt-get install texlive-xetex pandoc pandoc-citeproc
-    - name: info
-      run: |
-        pandoc -v
-    - name: build 
-      run: |
-        pushd .
-        mkdir build
-        cd build
-        mkdir doc
-        cd doc
-        cp -r ../../doc/joss ./
-        cd joss
-        pandoc paper.md -o paper.pdf --bibliography ./paper.bib --latex-engine=xelatex
-        popd
-    - uses: actions/upload-artifact@v1.0.0
-      with:
-        name: joss-paper
-        path: build/doc/joss/paper.pdf 
-
diff --git a/.github/workflows/osx.yml b/.github/workflows/osx.yml
index c01cabb0dc3..d05f35919f3 100644
--- a/.github/workflows/osx.yml
+++ b/.github/workflows/osx.yml
@@ -10,7 +10,7 @@ on:
         default: false
 
 concurrency:
-  group: ${{ github.workflow }}-${{ (github.head_ref && github.ref) || github.run_id }}
+  group: ${{ github.workflow }}-${{ github.head_ref }}
   cancel-in-progress: true
 
 jobs:
diff --git a/.github/workflows/windows-cygwin.yml b/.github/workflows/windows-cygwin.yml
deleted file mode 100644
index 4dec367563a..00000000000
--- a/.github/workflows/windows-cygwin.yml
+++ /dev/null
@@ -1,58 +0,0 @@
-name: Windows-Cygwin
-
-on:
-  push:
-  workflow_dispatch:
-    inputs:
-      debug_enabled:
-        description: 'Run the build with tmate debugging enabled (https://github.com/marketplace/actions/debugging-with-tmate)'
-        required: false
-        default: false
-
-concurrency:
-  group: ${{ github.workflow }}-${{ (github.head_ref && github.ref) || github.run_id }}
-  cancel-in-progress: true
-
-jobs:
-  windows_cygwin:
-    strategy:
-      fail-fast: false
-      matrix:
-        config:
-        - {shared: "OFF", build_type: "Release", name: "omp/release/static", cflags: ""}
-    name: cygwin/${{ matrix.config.name }}
-    runs-on: [windows-latest]
-    steps:
-    - run: git config --global core.autocrlf input
-    - name: Checkout the latest code (shallow clone)
-      uses: actions/checkout@v2
-
-    - name: setup
-      run: |
-        choco install cygwin -y
-        choco install cyg-get -y
-        cyg-get cmake make gcc-g++ git
-
-    - name: Debug over SSH (tmate)
-      uses: mxschmitt/action-tmate@v3.5
-      if: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.debug_enabled }}
-      with:
-        limit-access-to-actor: true
-
-    - name: configure
-      run: |
-        path C:\tools\cygwin\bin
-        mkdir build
-        cd build
-        bash -c "cmake -DBUILD_SHARED_LIBS=${{ matrix.config.shared }} -DCMAKE_BUILD_TYPE=${{ matrix.config.build_type }} -DGINKGO_COMPILER_FLAGS=${{ matrix.config.cflags }} .."
-        bash -c "make -j4"
-        bash -c "ctest . --output-on-failure"
-      shell: cmd
-
-    - name: install
-      run: |
-        path C:\tools\cygwin\bin
-        cd build
-        bash -c "make install"
-        bash -c "export PATH=/usr/local/bin:$PATH && make test_install"
-      shell: cmd
diff --git a/.github/workflows/windows-mingw.yml b/.github/workflows/windows-mingw.yml
deleted file mode 100644
index 0a470356ec5..00000000000
--- a/.github/workflows/windows-mingw.yml
+++ /dev/null
@@ -1,56 +0,0 @@
-name: Windows-MinGW
-
-on:
-  push:
-  workflow_dispatch:
-    inputs:
-      debug_enabled:
-        description: 'Run the build with tmate debugging enabled (https://github.com/marketplace/actions/debugging-with-tmate)'
-        required: false
-        default: false
-
-concurrency:
-  group: ${{ github.workflow }}-${{ (github.head_ref && github.ref) || github.run_id }}
-  cancel-in-progress: true
-
-jobs:
-  windows_mingw:
-    strategy:
-      fail-fast: false
-      matrix:
-        config:
-        - {shared: "OFF", build_type: "Release", name: "omp/release/static", cflags: ""}
-    name: mingw/${{ matrix.config.name }}
-    runs-on: [windows-latest]
-    steps:
-    - name: Checkout the latest code (shallow clone)
-      uses: actions/checkout@v2
-
-    - name: Debug over SSH (tmate)
-      uses: mxschmitt/action-tmate@v3.5
-      if: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.debug_enabled }}
-      with:
-        limit-access-to-actor: true
-
-    - name: configure
-    # Use cmd to remove the path easily
-      run: |
-        bcdedit /set IncreaseUserVa 3072
-        editbin /LARGEADDRESSAWARE "C:\Program Files\Git\mingw64\bin\cc1plus.exe"
-        path %PATH:C:\Program Files\Git\bin;=%
-        path %PATH:C:\Program Files\Git\usr\bin;=%
-        mkdir build
-        cd build
-        cmake -G "MinGW Makefiles" -DBUILD_SHARED_LIBS=${{ matrix.config.shared }} -DCMAKE_BUILD_TYPE=${{ matrix.config.build_type }} -DGINKGO_COMPILER_FLAGS=${{ matrix.config.cflags }} ..
-        cmake --build . -j4
-        ctest . --output-on-failure
-      shell: cmd
-
-    - name: install
-      run: |
-        set PATH=%PATH:C:\Program Files\Git\bin;=%
-        set PATH=%PATH:C:\Program Files\Git\usr\bin;=%;C:\Program Files (x86)\Ginkgo\bin
-        cd build
-        cmake --install .
-        cmake --build . --target test_install
-      shell: cmd
diff --git a/.github/workflows/windows-msvc-cuda.yml b/.github/workflows/windows-msvc-cuda.yml
deleted file mode 100644
index 6bdfceee09b..00000000000
--- a/.github/workflows/windows-msvc-cuda.yml
+++ /dev/null
@@ -1,53 +0,0 @@
-name: Windows-MSVC-CUDA (compile-only)
-
-on:
-  push:
-  workflow_dispatch:
-    inputs:
-      debug_enabled:
-        description: 'Run the build with tmate debugging enabled (https://github.com/marketplace/actions/debugging-with-tmate)'
-        required: false
-        default: false
-
-concurrency:
-  group: ${{ github.workflow }}-${{ (github.head_ref && github.ref) || github.run_id }}
-  cancel-in-progress: true
-
-jobs:
-  windows_cuda:
-    strategy:
-      fail-fast: false
-      matrix:
-        config:
-        - {version: "latest", name: "cuda-latest/release/shared", "mixed": "ON"}
-    name: msvc/${{ matrix.config.name }} (only compile)
-    runs-on: [windows-latest]
-
-    steps:
-    - name: Checkout the latest code (shallow clone)
-      uses: actions/checkout@v2
-    - name: setup (versioned)
-      if: matrix.config.version != 'latest'
-      run: |
-        choco install cuda --version=${{ matrix.config.version }} -y
-
-    - name: setup (latest)
-      if: matrix.config.version == 'latest'
-      run: |
-        choco install cuda -y
-
-    - name: Debug over SSH (tmate)
-      uses: mxschmitt/action-tmate@v3.5
-      if: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.debug_enabled }}
-      with:
-        limit-access-to-actor: true
-
-    - name: configure
-      run: |
-        $env:ChocolateyInstall = Convert-Path "$((Get-Command choco).Path)\..\.."
-        Import-Module "$env:ChocolateyInstall\helpers\chocolateyProfile.psm1"
-        refreshenv
-        mkdir build
-        cd build
-        cmake -T version=14.25 -DGINKGO_BUILD_CUDA=ON -DGINKGO_BUILD_OMP=OFF -DGINKGO_MIXED_PRECISION=${{ matrix.config.mixed }} -DGINKGO_CUDA_ARCHITECTURES=60 ..
-        cmake --build . -j4 --config Release
diff --git a/.github/workflows/windows-msvc-ref.yml b/.github/workflows/windows-msvc-ref.yml
deleted file mode 100644
index 1ef21ee8777..00000000000
--- a/.github/workflows/windows-msvc-ref.yml
+++ /dev/null
@@ -1,51 +0,0 @@
-name: Windows-MSVC-Reference
-
-on:
-  push:
-  workflow_dispatch:
-    inputs:
-      debug_enabled:
-        description: 'Run the build with tmate debugging enabled (https://github.com/marketplace/actions/debugging-with-tmate)'
-        required: false
-        default: false
-
-concurrency:
-  group: ${{ github.workflow }}-${{ (github.head_ref && github.ref) || github.run_id }}
-  cancel-in-progress: true
-
-jobs:
-  windows_ref:
-    strategy:
-      fail-fast: false
-      matrix:
-        config:
-        - {shared: "ON", build_type: "Debug", name: "reference/debug/shared"}
-        - {shared: "OFF", build_type: "Release", name: "reference/release/static"}
-        # Debug static needs too much storage
-        # - {shared: "OFF", build_type: "Debug", name: "reference/debug/static"}
-    name: msvc/${{ matrix.config.name }}
-    runs-on: [windows-latest]
-    steps:
-    - name: Checkout the latest code (shallow clone)
-      uses: actions/checkout@v2
-
-    - name: Debug over SSH (tmate)
-      uses: mxschmitt/action-tmate@v3.5
-      if: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.debug_enabled }}
-      with:
-        limit-access-to-actor: true
-
-    - name: configure
-      run: |
-        mkdir build
-        cd build
-        cmake  -DBUILD_SHARED_LIBS=${{ matrix.config.shared }} -DCMAKE_CXX_FLAGS_DEBUG='/MDd /Zi /Ob1 /O1 /Od /RTC1' -DGINKGO_BUILD_CUDA=OFF -DGINKGO_BUILD_OMP=OFF ..
-        cmake --build . -j4 --config ${{ matrix.config.build_type }}
-        ctest . -C ${{ matrix.config.build_type }} --output-on-failure
-
-    - name: install
-      run: |
-        $env:PATH="$env:PATH;C:\Program Files (x86)\Ginkgo\bin"
-        cd build
-        cmake --install . --config ${{ matrix.config.build_type }}
-        cmake --build . --target test_install --config ${{ matrix.config.build_type }}