Split C++ unit tests to better debug (#2848)

Summary:
Pull Request resolved: #2848

AFAIK most of our changes are in Python. And the CPU unit test CI is only erroring from c++ make issue. I'm splitting the two github actions to:
1. Separation of tests - so while we work on a fix for the cmake issue, diffs aren't obscured from potential failures to unit tests.
2. Offering us the option to temporarily disable c++ tests at diff time if there is no fix.

Reviewed By: TroyGarden

Differential Revision: D71855286

fbshipit-source-id: 60611c78d8774f1d6ca694ae2d892ad46f188394

Author: aporialiao

.github/workflows/cpp_unittest_ci_cpu.yml

@@ -0,0 +1,63 @@
+# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
+# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
+
+name: CPU Unit Test C++ CI
+
+on:
+  push:
+    paths-ignore:
+      - "docs/*"
+      - "third_party/*"
+      - .gitignore
+      - "*.md"
+  pull_request:
+    paths-ignore:
+      - "docs/*"
+      - "third_party/*"
+      - .gitignore
+      - "*.md"
+
+jobs:
+  build_test:
+    strategy:
+        fail-fast: false
+        matrix:
+          include:
+            - os: linux.2xlarge
+              python-version: 3.9
+              python-tag: "py39"
+            - os: linux.2xlarge
+              python-version: '3.10'
+              python-tag: "py310"
+            - os: linux.2xlarge
+              python-version: '3.11'
+              python-tag: "py311"
+            - os: linux.2xlarge
+              python-version: '3.12'
+              python-tag: "py312"
+    uses: pytorch/test-infra/.github/workflows/linux_job_v2.yml@main
+    permissions:
+      id-token: write
+      contents: read
+    with:
+      runner: ${{ matrix.os }}
+      timeout: 15
+      script: |
+        ldd --version
+        conda create -y --name build_binary python=${{ matrix.python-version }}
+        conda info
+        python --version
+        echo "Starting C++ Tests"
+        conda install -n build_binary -y gxx_linux-64
+        conda run -n build_binary \
+          x86_64-conda-linux-gnu-g++ --version
+        conda install -n build_binary -c anaconda redis -y
+        conda run -n build_binary redis-server --daemonize yes
+        mkdir cpp-build
+        cd cpp-build
+        conda run -n build_binary cmake \
+            -DBUILD_TEST=ON \
+            -DBUILD_REDIS_IO=ON \
+            -DCMAKE_PREFIX_PATH=/opt/conda/envs/build_binary/lib/python${{ matrix.python-version }}/site-packages/torch/share/cmake ..
+        conda run -n build_binary make -j
+        conda run -n build_binary ctest -V .

.github/workflows/unittest_ci_cpu.yml

@@ -75,17 +75,3 @@ jobs:
         conda run -n build_binary \
           python -m pytest torchrec -v -s -W ignore::pytest.PytestCollectionWarning --continue-on-collection-errors \
           --ignore-glob=**/test_utils/
-        echo "Starting C++ Tests"
-        conda install -n build_binary -y gxx_linux-64
-        conda run -n build_binary \
-          x86_64-conda-linux-gnu-g++ --version
-        conda install -n build_binary -c anaconda redis -y
-        conda run -n build_binary redis-server --daemonize yes
-        mkdir cpp-build
-        cd cpp-build
-        conda run -n build_binary cmake \
-            -DBUILD_TEST=ON \
-            -DBUILD_REDIS_IO=ON \
-            -DCMAKE_PREFIX_PATH=/opt/conda/envs/build_binary/lib/python${{ matrix.python-version }}/site-packages/torch/share/cmake ..
-        conda run -n build_binary make -j
-        conda run -n build_binary ctest -V .