Hopefully speed up CI some more

.github/workflows/test_t8code_linkage.yml

@@ -62,6 +62,12 @@ jobs:
       run: tar -xf artifact.tar && rm artifact.tar
     - name: Update packages
       run: sudo apt-get update && sudo apt-get upgrade -y
+    - name: install ccache
+      run: sudo apt install ccache -y
+    - name: enable caching of build artifacts
+      run: PATH=/usr/lib/ccache:$PATH;
+           which gcc;
+           ccache -s;
       # This seems to be necessary because of the docker container
     - name: disable ownership checks
       run: git config --global --add safe.directory '*'
@@ -85,7 +91,7 @@ jobs:
       run: export TEST_LEVEL_FLAG="-DT8CODE_TEST_LEVEL=${{ inputs.TEST_LEVEL }}"
            && echo TEST_LEVEL_FLAG="$TEST_LEVEL_FLAG" >> $GITHUB_ENV
     - name: build config variables
-      run: export CONFIG_OPTIONS="${TEST_LEVEL_FLAG} -GNinja -DCMAKE_C_FLAGS_DEBUG=${DEBUG_CONFIG} -DCMAKE_CXX_FLAGS_DEBUG=${DEBUG_CONFIG} -DT8CODE_USE_SYSTEM_SC=ON -DT8CODE_USE_SYSTEM_P4EST=ON -DT8CODE_BUILD_PEDANTIC=ON -DT8CODE_BUILD_WALL=ON -DT8CODE_BUILD_WERROR=ON -DT8CODE_BUILD_WEXTRA=ON -DT8CODE_ENABLE_MPI=$MPI -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DSC_DIR=$SC_PATH/install/cmake -DP4EST_DIR=$P4EST_PATH/install/cmake"
+      run: export CONFIG_OPTIONS="${TEST_LEVEL_FLAG} -GNinja -DCMAKE_C_COMPILER_LAUNCHER=ccache -DCMAKE_CXX_COMPILER_LAUNCHER=ccache -DCMAKE_C_FLAGS_DEBUG=${DEBUG_CONFIG} -DCMAKE_CXX_FLAGS_DEBUG=${DEBUG_CONFIG} -DT8CODE_USE_SYSTEM_SC=ON -DT8CODE_USE_SYSTEM_P4EST=ON -DT8CODE_BUILD_PEDANTIC=ON -DT8CODE_BUILD_WALL=ON -DT8CODE_BUILD_WERROR=ON -DT8CODE_BUILD_WEXTRA=ON -DT8CODE_ENABLE_MPI=$MPI -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DSC_DIR=$SC_PATH/install/cmake -DP4EST_DIR=$P4EST_PATH/install/cmake"
            && echo CONFIG_OPTIONS="$CONFIG_OPTIONS" >> $GITHUB_ENV
     # cmake and test with netcdf
     - name: check NetCDF
@@ -104,6 +110,8 @@ jobs:
       run: cd build_netcdf && ninja $MAKEFLAGS
     - name: ninja install
       run: cd build_netcdf && ninja install $MAKEFLAGS
+    - name: verify ccache
+      run: ccache -s
     - name: serial tests (if MPI is enabled)
       run: cd build_netcdf && ctest $MAKEFLAGS -R _serial
       if: ${{ inputs.MPI == 'ON' }}

.github/workflows/testsuite.yml

@@ -123,37 +123,6 @@ jobs:
       CACHE_COUNTER: 0 # Increase this number to force a new installation of sc and p4est and to update the cache once
       MPI: ${{ matrix.MPI }}
 
-  # Run parallel tests for sc and p4est with and without MPI
-  sc_p4est_tests:
-    needs: preparation
-    uses: ./.github/workflows/test_sc_p4est.yml
-    strategy:
-      fail-fast: false
-      matrix:
-        MPI: [OFF, ON]
-        include:
-          - MAKEFLAGS: -j4
-    with:
-      MAKEFLAGS: ${{ matrix.MAKEFLAGS }}
-      MPI: ${{ matrix.MPI }}
-
-  # Run t8code tests with and without MPI and in serial and debug mode
-  t8code_tests:
-    needs: preparation
-    uses: ./.github/workflows/test_t8code.yml
-    strategy:
-      fail-fast: false
-      matrix:
-        MPI: [OFF, ON]
-        BUILD_TYPE: [Debug, Release]
-        include:
-          - MAKEFLAGS: -j4
-    with:
-      MAKEFLAGS: ${{ matrix.MAKEFLAGS }}
-      MPI: ${{ matrix.MPI }}
-      BUILD_TYPE: ${{ matrix.BUILD_TYPE }}
-      TEST_LEVEL: ${{ github.event_name == 'pull_request' && 'T8_TEST_LEVEL_MEDIUM' || 'T8_TEST_LEVEL_FULL' }} # Set TEST_LEVEL to medium if the event is a PR, otherwise full.
-
   # Run t8code linkage tests with and without MPI and in serial and debug mode
   t8code_linkage_tests:
     needs: preparation
@@ -170,62 +139,3 @@ jobs:
       MPI: ${{ matrix.MPI }}
       BUILD_TYPE: ${{ matrix.BUILD_TYPE }}
       TEST_LEVEL: ${{ github.event_name == 'pull_request' && 'T8_TEST_LEVEL_MEDIUM' || 'T8_TEST_LEVEL_FULL' }} # Set TEST_LEVEL to medium if the event is a PR, otherwise full.
-
-  # Run t8code linkage tests with and without MPI and in serial and debug mode
-  t8code_api_tests:
-    needs: preparation
-    uses: ./.github/workflows/test_t8code_api.yml
-    strategy:
-      fail-fast: false
-      matrix:
-        MPI: [ON] # For now the fortran API only supports building with MPI
-        BUILD_TYPE: [Debug, Release]
-        include:
-          - MAKEFLAGS: -j4
-    with:
-      MAKEFLAGS: ${{ matrix.MAKEFLAGS }}
-      MPI: ${{ matrix.MPI }}
-      BUILD_TYPE: ${{ matrix.BUILD_TYPE }}
-      TEST_LEVEL: ${{ github.event_name == 'pull_request' && 'T8_TEST_LEVEL_MEDIUM' || 'T8_TEST_LEVEL_FULL' }} # Set TEST_LEVEL to medium if the event is a PR, otherwise full.
-
-  # Run Valgrind check for every t8code test binary.
-  t8code_valgrind_tests:
-    if: (github.event_name == 'schedule' && github.repository == 'DLR-AMR/t8code') # Only run the Valgrind check in the scheduled run.
-    needs: preparation
-    uses: ./.github/workflows/test_valgrind.yml
-    with:
-      TEST_LEVEL: T8_TEST_LEVEL_BASIC # Do Valgrind check for test level T8_TEST_LEVEL_BASIC for performance reasons.
-
-  # Generate code coverage and deploy to Codecov.
-  t8code_code_coverage:
-    if: (github.event_name != 'merge_group')
-    needs: preparation
-    uses: ./.github/workflows/code_coverage.yml
-    with:
-      MAKEFLAGS: -j4
-      MPI: ON
-      BUILD_TYPE: Debug
-      TEST_LEVEL: T8_TEST_LEVEL_BASIC
-    secrets:
-      CODE_COV: ${{ secrets.CODE_COV }}
-
-  # Run t8code tests with shipped submodules. This test is only for the build system, so only one config is tested.
-  t8code_w_shipped_submodules_tests:
-    needs: fine_grained_trigger
-    secrets: inherit
-    if: ${{ needs.fine_grained_trigger.outputs.run_ci == 'true' }}
-    uses: ./.github/workflows/test_t8code_w_shipped_submodules.yml
-    with:
-      MAKEFLAGS: -j4
-      MPI: ON
-      BUILD_TYPE: Debug
-      TEST_LEVEL: ${{ github.event_name == 'pull_request' && 'T8_TEST_LEVEL_MEDIUM' || 'T8_TEST_LEVEL_FULL' }} # Set TEST_LEVEL to medium if the event is a PR, otherwise full.
-
-  t8code_doxygen_check:
-    uses: ./.github/workflows/check_doxygen.yml
-
-  t8code_tarball:
-    if: github.event.pull_request.draft == false
-    uses: ./.github/workflows/test_tarball.yml
-    with:
-      TEST_LEVEL: ${{ github.event_name == 'pull_request' && 'T8_TEST_LEVEL_MEDIUM' || 'T8_TEST_LEVEL_FULL' }} # Set TEST_LEVEL to medium if the event is a PR, otherwise full.