diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake_macos.yml
similarity index 59%
rename from .github/workflows/cmake.yml
rename to .github/workflows/cmake_macos.yml
index fe4124896..eb547b441 100644
--- a/.github/workflows/cmake.yml
+++ b/.github/workflows/cmake_macos.yml
@@ -1,38 +1,37 @@
-name: CMake
+name: CMake MacOS
 
 on:
   pull_request:
   workflow_dispatch:
 
+env:
+  LIBRARY_PATH: /usr/local/lib/gcc/current
+
 jobs:
   build:
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest] # macos-latest disabled because of https://github.com/PHAREHUB/PHARE/issues/732
+        os: [macos-11, macos-latest]
 
     steps:
+    - name: Build Info
+      run: |
+        uname -a
+        gcc -v
+        clang -v
+
     - name: CCache
       id: cache
-      uses: actions/cache@v2
+      uses: actions/cache@v3
       with:
         path: ~/.ccache
         key: ${{ runner.os }}-ccache-${{ hashFiles('hashFile.txt') }}
         restore-keys: ${{ runner.os }}-ccache-
 
-    - name: Cache PIP (Linux)
-      uses: actions/cache@v2
-      if: startsWith(runner.os, 'Linux')
-      with:
-        path: ~/.cache/pip
-        key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
-        restore-keys: |
-          ${{ runner.os }}-pip-
-
     - name: Cache PIP (OSX)
       uses: actions/cache@v3
-      if: startsWith(runner.os, 'macOS')
       with:
         path: ~/Library/Caches/pip
         key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
@@ -50,14 +49,9 @@ jobs:
 
     - name: Install system deps (openmpi, hdf5, ccache,...)
       run: |
-        if [ "$RUNNER_OS" == "Linux" ]; then
-          sudo apt-get update
-          sudo apt-get install -y libopenmpi-dev openmpi-bin libhdf5-openmpi-dev ccache
-        else
-          brew reinstall gcc
-          brew install open-mpi hdf5-mpi ccache
-          echo "/usr/local/opt/ccache/libexec" >> $GITHUB_PATH
-        fi
+        brew reinstall gcc
+        brew install open-mpi hdf5-mpi ccache
+        echo "/usr/local/opt/ccache/libexec" >> $GITHUB_PATH
 
     - name: Ensure ccache uses ~/.ccache
       run: |
@@ -68,34 +62,27 @@ jobs:
     - name: Install python deps
       run: |
         python -m pip install --upgrade pip
-        if [ -f requirements.txt ]; then python -m pip install -r requirements.txt; fi
+        python -m pip install -r requirements.txt
 
     - name: Create Build Environment
       run: cmake -E make_directory ${{runner.workspace}}/build
 
     - name: Configure CMake
-      shell: bash
       working-directory: ${{runner.workspace}}/build
       run: |
-        cmake $GITHUB_WORKSPACE \
+        cmake $GITHUB_WORKSPACE -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON \
               -DENABLE_SAMRAI_TESTS=OFF -DCMAKE_C_COMPILER_LAUNCHER=ccache \
               -DCMAKE_CXX_COMPILER_LAUNCHER=ccache -DlowResourceTests=ON \
               -DCMAKE_CXX_FLAGS="-DPHARE_DIAG_DOUBLES=1 -O2"
 
     - name: Build
       working-directory: ${{runner.workspace}}/build
-      shell: bash
       run: |
-        if [ "$RUNNER_OS" == "Linux" ]; then
-           cmake --build . # OOM if more threads
-        else
-           cmake --build . -j 2
-        fi
+        cmake --build . -j 2
 
     - name: Test
       working-directory: ${{runner.workspace}}/build
       env:
         CTEST_OUTPUT_ON_FAILURE: 1
-      shell: bash
-      run: ctest -j 2 
-      
+      run: ctest -j 2
+
diff --git a/.github/workflows/cmake_ubuntu.yml b/.github/workflows/cmake_ubuntu.yml
new file mode 100644
index 000000000..4763fe3cf
--- /dev/null
+++ b/.github/workflows/cmake_ubuntu.yml
@@ -0,0 +1,94 @@
+name: CMake Ubuntu
+
+on:
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest]
+
+    steps:
+    - name: Build Info
+      run: |
+        uname -a
+        gcc -v
+        clang -v
+
+    - name: CCache
+      id: cache
+      uses: actions/cache@v2
+      with:
+        path: ~/.ccache
+        key: ${{ runner.os }}-ccache-${{ hashFiles('hashFile.txt') }}
+        restore-keys: ${{ runner.os }}-ccache-
+
+    - name: Cache PIP (Linux)
+      uses: actions/cache@v2
+      with:
+        path: ~/.cache/pip
+        key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+        restore-keys: |
+          ${{ runner.os }}-pip-
+
+    - name: Clone PHARE
+      uses: actions/checkout@v3
+      with:
+        submodules: 'recursive'
+
+    - uses: actions/setup-python@v4
+      with:
+        python-version: '3.11.1'
+
+    - name: Install system deps (openmpi, hdf5, ccache,...)
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y libopenmpi-dev openmpi-bin libhdf5-openmpi-dev ccache
+
+    - name: Ensure ccache uses ~/.ccache
+      run: |
+          mkdir -p ~/.ccache
+          ccache --set-config=cache_dir=~/.ccache
+          ccache --get-config=cache_dir
+
+    - name: Install python deps
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install -r requirements.txt
+
+    - name: Create Build Environment
+      run: cmake -E make_directory ${{runner.workspace}}/build
+
+    - name: Configure CMake
+      shell: bash
+      working-directory: ${{runner.workspace}}/build
+      run: |
+        set -ex
+        cmake $GITHUB_WORKSPACE
+        cd ${{runner.workspace}}/PHARE/subprojects/samrai && mkdir build && cd build
+        cmake .. -DENABLE_SAMRAI_TESTS=OFF -DCMAKE_BUILD_TYPE=Release
+        make -j2 && sudo make install && cd ../.. && rm -rf samrai
+        cd ${{runner.workspace}}/build && rm -rf *
+        cmake $GITHUB_WORKSPACE -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON --fresh \
+              -DCMAKE_C_COMPILER_LAUNCHER=ccache \
+              -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
+              -DlowResourceTests=ON \
+              -DCMAKE_CXX_FLAGS="-DPHARE_DIAG_DOUBLES=1 -O2"
+
+    - name: Build
+      working-directory: ${{runner.workspace}}/build
+      shell: bash
+      run: |
+        cmake --build . # OOM if more threads
+
+    - name: Test
+      working-directory: ${{runner.workspace}}/build
+      env:
+        CTEST_OUTPUT_ON_FAILURE: 1
+      shell: bash
+      run: ctest -j 2
+
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 32dab9d3e..b7313e2f1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,7 +22,7 @@ set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 
 include(CheckCXXCompilerFlag)
 find_program(Git git)
-find_package(PythonInterp  3.0 REQUIRED)
+find_package(PythonInterp  3.8 REQUIRED)
 
 set(PHARE_PROJECT_DIR ${CMAKE_CURRENT_SOURCE_DIR})
 set(CMAKE_EXPORT_COMPILE_COMMANDS 1)