Add 9 as np

Author: rohanbabbar04

.github/workflows/build.yml

@@ -16,7 +16,7 @@ jobs:
         os: [ubuntu-latest, macos-latest]
         python-version: ['3.10', '3.11', '3.12', '3.13']
         mpi: ['mpich', 'openmpi', 'intelmpi']
-        rank: ['2', '3', '4']
+        rank: ['2', '4', '9']
         exclude:
           - os: macos-latest
             mpi: 'intelmpi'
@@ -47,5 +47,5 @@ jobs:
           echo "Starting MPI test"
           mpiexec --oversubscribe -n 9 hostname
           echo "MPI test completed"
-      - name: Testing using pytest-mpi
-        run: mpiexec -n ${{ matrix.rank }} pytest tests/ --with-mpi
+#      - name: Testing using pytest-mpi
+#        run: mpiexec -n ${{ matrix.rank }} pytest tests/ --with-mpi