numpy version for x86 build

Author: ritvikrao

.github/workflows/charm4py.yml

@@ -30,10 +30,7 @@ jobs:
           python3 auto_test.py
 
   macos:
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [macos-14, macos-12]
+    runs-on: macos-14
 
     steps:
       - uses: actions/checkout@v3
@@ -59,3 +56,32 @@ jobs:
           export PYTHONPATH="$PWD"
           export CHARM4PY_TEST_NUM_PROCESSES=2
           python3 auto_test.py
+
+  macos-x86:
+    runs-on: macos-12
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: setup-python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.x'
+      - name: Install dependencies
+        run: |
+          python3 -m pip install --upgrade pip
+          pip3 install setuptools cython cffi greenlet numpy=1.26.4 torch torchvision
+      - name: build-charm4py
+        run: |
+          git fetch --unshallow # Need full repo for 'git describe' used by setup.py
+          git clone https://github.com/UIUC-PPL/charm charm_src/charm
+          export CHARM_EXTRA_BUILD_OPTS="--enable-error-checking"
+          export CHARM_BUILD_PROCESSES=2
+          export CHARM4PY_BUILD_CFFI=1
+          python3 setup.py build_ext --inplace
+      - name: test-charm4py
+        run: |
+          export PYTHONPATH="$PWD"
+          export CHARM4PY_TEST_NUM_PROCESSES=2
+          python3 auto_test.py
+    
+