Restore GitHub, Phoenix, and Frontier AMD CI/bench jobs

Re-add the jobs that were temporarily removed for CCE testing:
- test.yml: github job (gfortran + Intel ifx), Phoenix matrix entries,
  Frontier AMD matrix entries
- bench.yml: Phoenix NVHPC entries, Frontier AMD entry

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: Spencer Bryngelson

.github/workflows/bench.yml

@@ -37,7 +37,30 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          # Frontier (ORNL) — CCE only
+          - cluster: phoenix
+            name: Georgia Tech | Phoenix (NVHPC)
+            group: phoenix
+            labels: gt
+            flag: p
+            device: cpu
+            interface: none
+            build_script: ""
+          - cluster: phoenix
+            name: Georgia Tech | Phoenix (NVHPC)
+            group: phoenix
+            labels: gt
+            flag: p
+            device: gpu
+            interface: acc
+            build_script: ""
+          - cluster: phoenix
+            name: Georgia Tech | Phoenix (NVHPC)
+            group: phoenix
+            labels: gt
+            flag: p
+            device: gpu
+            interface: omp
+            build_script: ""
           - cluster: frontier
             name: Oak Ridge | Frontier (CCE)
             group: phoenix
@@ -54,6 +77,14 @@ jobs:
             device: gpu
             interface: omp
             build_script: "bash .github/workflows/frontier/build.sh gpu omp bench"
+          - cluster: frontier_amd
+            name: Oak Ridge | Frontier (AMD)
+            group: phoenix
+            labels: frontier
+            flag: famd
+            device: gpu
+            interface: omp
+            build_script: "bash .github/workflows/frontier_amd/build.sh gpu omp bench"
     runs-on:
       group: ${{ matrix.group }}
       labels: ${{ matrix.labels }}

.github/workflows/test.yml

@@ -68,6 +68,88 @@ jobs:
         with: 
           filters: ".github/file-filter.yml"
 
+  github:
+    name: Github
+    if: needs.file-changes.outputs.checkall == 'true'
+    needs: [lint-gate, file-changes]
+    strategy:
+      matrix:
+        os:    ['ubuntu', 'macos']
+        mpi:   ['mpi']
+        precision: ['']
+        debug: ['debug', 'no-debug']
+        intel: [true, false]
+        exclude:
+          - os:    macos
+            intel: true
+
+        include:
+          - os:    ubuntu
+            mpi:   no-mpi
+            precision: single
+            debug: no-debug
+            intel: false
+
+      fail-fast: false
+    continue-on-error: true
+    runs-on: ${{ matrix.os }}-latest
+
+    steps:
+      - name: Clone
+        uses: actions/checkout@v4
+
+      - name: Restore Build Cache
+        uses: actions/cache@v4
+        with:
+          path: build
+          key: mfc-build-${{ matrix.os }}-${{ matrix.mpi }}-${{ matrix.debug }}-${{ matrix.precision }}-${{ matrix.intel }}-${{ hashFiles('CMakeLists.txt', 'toolchain/dependencies/**', 'toolchain/cmake/**', 'src/**/*.fpp', 'src/**/*.f90') }}
+
+      - name: Setup MacOS
+        if:   matrix.os == 'macos'
+        run:  |
+          brew update
+          brew upgrade
+          brew install coreutils python fftw hdf5 gcc@15 boost open-mpi lapack
+          echo "FC=gfortran-15" >> $GITHUB_ENV
+          echo "BOOST_INCLUDE=/opt/homebrew/include/" >> $GITHUB_ENV
+
+      - name: Setup Ubuntu
+        if:   matrix.os == 'ubuntu' && matrix.intel == false
+        run: |
+           sudo apt update -y
+           sudo apt install -y cmake gcc g++ python3 python3-dev hdf5-tools \
+                    libfftw3-dev libhdf5-dev openmpi-bin libopenmpi-dev \
+                    libblas-dev liblapack-dev
+
+      - name: Setup Ubuntu (Intel)
+        if:   matrix.os == 'ubuntu' && matrix.intel == true
+        run: |
+          wget https://apt.repos.intel.com/intel-gpg-keys/GPG-PUB-KEY-INTEL-SW-PRODUCTS.PUB
+          sudo apt-key add GPG-PUB-KEY-INTEL-SW-PRODUCTS.PUB
+          sudo add-apt-repository "deb https://apt.repos.intel.com/oneapi all main"
+          sudo apt-get update
+          sudo apt-get install -y intel-oneapi-compiler-fortran intel-oneapi-mpi intel-oneapi-mpi-devel
+          source /opt/intel/oneapi/setvars.sh
+          printenv >> $GITHUB_ENV
+
+      - name: Set up Python 3.14
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.14'
+
+      - name: Build
+        run:  |
+          /bin/bash mfc.sh test -v --dry-run -j $(nproc) --${{ matrix.debug }} --${{ matrix.mpi }} --${{ matrix.precision }} $TEST_ALL
+        env:
+          TEST_ALL: ${{ matrix.mpi == 'mpi' && '--test-all' || '' }}
+
+      - name: Test
+        run:  |
+          /bin/bash mfc.sh test -v --max-attempts 3 -j $(nproc) $TEST_ALL $TEST_PCT
+        env:
+          TEST_ALL: ${{ matrix.mpi == 'mpi' && '--test-all' || '' }}
+          TEST_PCT: ${{ matrix.debug == 'debug' && '-% 20' || '' }}
+
   self:
     name: "${{ matrix.cluster_name }} (${{ matrix.device }}${{ matrix.interface != 'none' && format('-{0}', matrix.interface) || '' }}${{ matrix.shard != '' && format(' [{0}]', matrix.shard) || '' }})"
     if: github.repository == 'MFlowCode/MFC' && needs.file-changes.outputs.checkall == 'true' && github.event.pull_request.draft != true
@@ -77,7 +159,23 @@ jobs:
     strategy:
       matrix:
         include:
-          # Frontier (ORNL) — CCE only
+          # Phoenix (GT) — build+test combined in SLURM job
+          - runner:       'gt'
+            cluster:      'phoenix'
+            cluster_name: 'Georgia Tech | Phoenix'
+            device: 'gpu'
+            interface: 'acc'
+          - runner:       'gt'
+            cluster:      'phoenix'
+            cluster_name: 'Georgia Tech | Phoenix'
+            device: 'gpu'
+            interface: 'omp'
+          - runner:       'gt'
+            cluster:      'phoenix'
+            cluster_name: 'Georgia Tech | Phoenix'
+            device: 'cpu'
+            interface: 'none'
+          # Frontier (ORNL) — CCE
           - runner:       'frontier'
             cluster:      'frontier'
             cluster_name: 'Oak Ridge | Frontier'
@@ -107,6 +205,17 @@ jobs:
             cluster_name: 'Oak Ridge | Frontier'
             device: 'cpu'
             interface: 'none'
+          # Frontier AMD — build on login node, test via SLURM
+          - runner:       'frontier'
+            cluster:      'frontier_amd'
+            cluster_name: 'Oak Ridge | Frontier (AMD)'
+            device: 'gpu'
+            interface: 'omp'
+          - runner:       'frontier'
+            cluster:      'frontier_amd'
+            cluster_name: 'Oak Ridge | Frontier (AMD)'
+            device: 'cpu'
+            interface: 'none'
     runs-on:
       group:  phoenix
       labels: ${{ matrix.runner }}