Migrate from Travis to gh-actions

.github/workflows/run_test_suite.yml

@@ -0,0 +1,37 @@
+# MARBL continuous integration testing (via Github Actions)
+name: MARBL CI
+
+on:
+    push:
+        branches: [ stable, development ]
+    pull_request:
+        branches: [ stable, development ]
+
+jobs:
+    MARBL-Testing:
+        runs-on: ubuntu-20.04
+
+        strategy:
+            matrix:
+                python-version:
+                    - 3.7
+
+        steps:
+            - uses: actions/checkout@v2
+
+            - name: Load Environment
+              run: |
+                sudo apt-get update
+                sudo apt install make gfortran netcdf-bin libnetcdf-dev libnetcdff-dev openmpi-bin libopenmpi-dev
+
+            - name: Setup Python ${{ matrix.python-version }}
+              uses: actions/setup-python@v2
+              with:
+                python-version: $ {{ matrix.python-version }}
+
+#            - name: build-docs
+
+            - name: Run Tests
+              run : |
+                cd MARBL_tools
+                ./run_test_suite.sh

tests/driver_src/marbl_mpi_mod.F90

@@ -3,16 +3,19 @@ module marbl_mpi_mod
   ! This module contains wrappers for all MPI calls so that marbl.F90
   ! does not need to have #ifdef macros scattered throughout
 
-  implicit none
-  public
-
 #define MPI 1
 #if MARBL_TIMING_OPT == MPI
 #define MARBL_WITH_MPI
 #endif
 
 #ifdef MARBL_WITH_MPI
-  include 'mpif.h'
+  use mpi
+#endif
+
+  implicit none
+  public
+
+#ifdef MARBL_WITH_MPI
   logical, parameter :: mpi_on = .true.
 #else
   logical, parameter :: mpi_on = .false.