Add MPI compat workflows.

.github/workflows/changelog_reminder.yml

@@ -1,5 +1,5 @@
 on:
-  pull_request:
+  #pull_request:
     types: [opened, ready_for_review]
 
 name: Changelog Reminder

.github/workflows/compat-check-latest-latest.yml

@@ -24,6 +24,12 @@ jobs:
     with:
       lightning-version: latest
       pennylane-version: latest
+  tests_lgpu_gpu_mpi:
+    name: Lightning Compatibility test (tests_lgpu_gpu_mpi) - latest/latest
+    uses: ./.github/workflows/tests_linux_x86_mpi_gpu.yml
+    with:
+      lightning-version: latest
+      pennylane-version: latest
   tests_without_binary:
     name: Lightning Compatibility test (tests_without_binary) - latest/latest
     uses: ./.github/workflows/tests_without_binary.yml

.github/workflows/compat-check-latest-stable.yml

@@ -24,6 +24,12 @@ jobs:
     with:
       lightning-version: latest
       pennylane-version: stable
+  tests_lgpu_gpu_mpi:
+    name: Lightning Compatibility test (tests_lgpu_gpu_mpi) - latest/stable
+    uses: ./.github/workflows/tests_linux_x86_mpi_gpu.yml
+    with:
+      lightning-version: latest
+      pennylane-version: stable
   tests_without_binary:
     name: Lightning Compatibility test (tests_without_binary) - latest/stable
     uses: ./.github/workflows/tests_without_binary.yml

.github/workflows/compat-check-release-release.yml

@@ -1,6 +1,7 @@
 name: Compat Check w/PL - release/release
 
 on:
+  pull_request:
   schedule:
     - cron: "0 4 * * 1-5"  # Run daily at 0am Mon-Fri
   workflow_dispatch:
@@ -24,6 +25,12 @@ jobs:
     with:
       lightning-version: release
       pennylane-version: release
+  tests_lgpu_gpu_mpi:
+    name: Lightning Compatibility test (tests_lgpu_gpu_mpi) - release/release
+    uses: ./.github/workflows/tests_linux_x86_mpi_gpu.yml
+    with:
+      lightning-version: release
+      pennylane-version: release
   tests_without_binary:
     name: Lightning Compatibility test (tests_without_binary) - release/release
     uses: ./.github/workflows/tests_without_binary.yml

.github/workflows/compat-check-stable-latest.yml

@@ -24,6 +24,12 @@ jobs:
     with:
       lightning-version: stable
       pennylane-version: latest
+  tests_lgpu_gpu_mpi:
+    name: Lightning Compatibility test (tests_lgpu_gpu_mpi) - stable/latest
+    uses: ./.github/workflows/tests_linux_x86_mpi_gpu.yml
+    with:
+      lightning-version: stable
+      pennylane-version: latest
   tests_without_binary:
     name: Lightning Compatibility test (tests_without_binary) - stable/latest
     uses: ./.github/workflows/tests_without_binary.yml

.github/workflows/compat-check-stable-stable.yml

@@ -24,6 +24,12 @@ jobs:
     with:
       lightning-version: stable
       pennylane-version: stable
+  tests_lgpu_gpu_mpi:
+    name: Lightning Compatibility test (tests_lgpu_gpu_mpi) - stable/stable
+    uses: ./.github/workflows/tests_linux_x86_mpi_gpu.yml
+    with:
+      lightning-version: stable
+      pennylane-version: stable
   tests_without_binary:
     name: Lightning Compatibility test (tests_without_binary) - stable/stable
     uses: ./.github/workflows/tests_without_binary.yml

.github/workflows/format.yml

@@ -1,6 +1,6 @@
 name: Formatting check
 on:
-  pull_request:
+  #pull_request:
   push:
     branches:
       - master

.github/workflows/tests_gpu_kokkos.yml

@@ -10,7 +10,7 @@ on:
         type: string
         required: true
         description: The version of PennyLane to use. Valid values are either 'release' (most recent release candidate), 'stable' (most recent git-tag) or 'latest' (most recent commit from master)
-  pull_request:
+  #pull_request:
   push:
     branches:
       - master

.github/workflows/tests_linux.yml

@@ -10,7 +10,7 @@ on:
         type: string
         required: true
         description: The version of PennyLane to use. Valid values are either 'release' (most recent release candidate), 'stable' (most recent git-tag) or 'latest' (most recent commit from master)
-  pull_request:
+  #pull_request:
   push:
     branches:
       - master

.github/workflows/tests_linux_x86_mpi_gpu.yml

@@ -14,7 +14,7 @@ on:
   push:
     branches:
       - main
-  pull_request:
+  #pull_request:
 
 env:
   COVERAGE_FLAGS: "--cov=pennylane_lightning --cov-report=term-missing --cov-report=xml:./coverage.xml --no-flaky-report -p no:warnings --tb=native"
@@ -28,7 +28,7 @@ concurrency:
 
 jobs:
   cpp_tests:
-    if: contains(github.event.pull_request.labels.*.name, 'ci:use-multi-gpu-runner') || (inputs.lightning-version != '' && inputs.pennylane-version != '')
+    if: contains(github.event.pull_request.labels.*.name, 'ci:use-multi-gpu-runner') && contains(fromJSON('["push", "pull_request", "release"]'), github.event_name)
     runs-on:
       - self-hosted
       - linux
@@ -159,7 +159,7 @@ jobs:
 
 
   python_tests:
-    if: contains(github.event.pull_request.labels.*.name, 'ci:use-multi-gpu-runner') || (inputs.lightning-version != '' && inputs.pennylane-version != '')
+    if: contains(github.event.pull_request.labels.*.name, 'ci:use-multi-gpu-runner')
     runs-on:
       - self-hosted
       - linux
@@ -178,12 +178,19 @@ jobs:
         with:
           fetch-tags: true
 
+      - name: Switch to release build of Lightning
+        if: inputs.lightning-version == 'release'
+        run: |
+          git fetch --all
+          git checkout $(git branch -a --list "origin/v*rc*" | tail -1)
+
       - name: Switch to stable build of Lightning
         if: inputs.lightning-version == 'stable'
         run: |
-          git fetch tags --force
+          git fetch --tags --force
           git checkout $(git tag | sort -V | tail -1)
 
+
       - uses: actions/setup-python@v4
         id: setup_python
         name: Install Python
@@ -222,18 +229,28 @@ jobs:
           echo "PIP Path => $pip_path"
           echo "pip=$pip_path" >> $GITHUB_OUTPUT
 
-      - name: Install Latest PennyLane
-        # We want to install the latest PL on non workflow_call events
-        if: inputs.pennylane-version == 'latest'  || inputs.pennylane-version == ''
-        run: python -m pip install git+https://github.com/PennyLaneAI/pennylane.git@master
-
       - name: Install required packages
         run: |
           source /etc/profile.d/modules.sh && module use /opt/modules/ && module load ${{ matrix.mpilib }}
-          python -m pip install pip~=22.0
-          python -m pip install ninja cmake custatevec-cu11 pytest pytest-mock flaky pytest-cov mpi4py openfermionpyscf
+          python -m pip install -r requirements-dev.txt
+          python -m pip install cmake custatevec-cu11 mpi4py openfermionpyscf
           SKIP_COMPILATION=True PL_BACKEND=lightning_qubit python -m pip install -e . -vv
 
+      - name: Checkout PennyLane for release build
+        if: inputs.pennylane-version == 'release'
+        uses: actions/checkout@v3
+        with:
+          path: pennylane
+          repository: PennyLaneAI/pennylane
+
+      - name: Switch to release build of PennyLane
+        if: inputs.pennylane-version == 'release'
+        run: |
+          cd pennylane
+          git fetch --all
+          git checkout $(git branch -a --list "origin/v*rc*" | tail -1)
+          python -m pip uninstall -y pennylane && python -m pip install . -vv --no-deps
+
       - name: Build and install package
         env:
           CUQUANTUM_SDK: $(python -c "import site; print( f'{site.getsitepackages()[0]}/cuquantum/lib')")

.github/workflows/tests_windows.yml

@@ -3,7 +3,7 @@ on:
   push:
     branches:
       - master
-  pull_request:
+  #pull_request:
 
 concurrency:
   group: tests_windows-${{ github.ref }}

.github/workflows/tests_without_binary.yml

@@ -10,7 +10,7 @@ on:
         type: string
         required: true
         description: The version of PennyLane to use. Valid values are either 'release' (most recent release candidate), 'stable' (most recent git-tag) or 'latest' (most recent commit from master)
-  pull_request:
+  #pull_request:
   push:
     branches:
       - master

.github/workflows/update_dev_version.yml

@@ -1,6 +1,6 @@
 name: Update dev version automatically
 on:
-  pull_request:
+  #pull_request:
 
 jobs:
   update-dev-version:

.github/workflows/wheel_linux_x86_64.yml

@@ -9,7 +9,7 @@ env:
   GCC_VERSION: 11
 
 on:
-  pull_request:
+  #pull_request:
   push:
     branches:
       - master

.github/workflows/wheel_linux_x86_64_cu11.yml

@@ -11,7 +11,7 @@ env:
   CUDA_VERSION_MINOR: 5
 
 on:
-  pull_request:
+  #pull_request:
   push:
     branches:
       - master

.github/workflows/wheel_macos_arm64.yml

@@ -6,7 +6,7 @@ name: Wheel::MacOS::ARM
 # **Who does it impact**: Wheels to be uploaded to PyPI.
 
 on:
-  pull_request:
+  #pull_request:
   push:
     branches:
       - master

.github/workflows/wheel_macos_x86_64.yml

@@ -6,7 +6,7 @@ name: Wheel::MacOS::Intel
 # **Who does it impact**: Wheels to be uploaded to PyPI.
 
 on:
-  pull_request:
+  #pull_request:
   push:
     branches:
       - master

.github/workflows/wheel_noarch.yml

@@ -6,7 +6,7 @@ name: Wheel::Any::None
 # **Who does it impact**: Wheels to be uploaded to PyPI.
 
 on:
-  pull_request:
+  #pull_request:
   push:
     branches:
       - master

.github/workflows/wheel_win_x86_64.yml

@@ -6,7 +6,7 @@ name: Wheel::Windows::x86_64
 # **Who does it impact**: Wheels to be uploaded to PyPI.
 
 on:
-  pull_request:
+  #pull_request:
   push:
     branches:
       - master