Adding a GitHub actions CI file.

.github/workflows/ci.yml

@@ -0,0 +1,102 @@
+name: CI
+
+on: [push]
+
+env:
+  MPI_DIR: /usr
+  DAGMC_ROOT: $HOME/DAGMC
+  HDF5_ROOT: /usr
+  OMP_NUM_THREADS: 2
+  OPENMC_CROSS_SECTIONS: $HOME/nndc_hdf5/cross_sections.xml
+  OPENMC_ENDF_DATA: $HOME/endf-b-vii.1
+  COVERALLS_PARALLEL: true
+  NUMPY_EXPERIMENTAL_ARRAY_FUNCTION: 0
+  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+
+jobs:
+  main:
+    runs-on: ubuntu-16.04
+    strategy:
+      matrix:
+        python-version: [3.8]
+        mpi: [n, y]
+        omp: [n, y]
+        dagmc: [n]
+        event: [n]
+        vectfit: [n]
+
+        include:
+          - python-version: 3.6
+            omp: n
+            mpi: n
+          - python-version: 3.7
+            omp: n
+            mpi: n
+          - dagmc: y
+            python-version: 3.8
+            mpi: y
+            omp: y
+          - event: y
+            python-version: 3.8
+            omp: y
+            mpi: n
+          - vectfit: y
+            python-version: 3.8
+            omp: n
+            mpi: y
+
+    steps:
+      -
+        uses: actions/checkout@v2
+
+      - 
+        name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      -
+        name: Environment Variables
+        run: |
+          echo "OPENMC_CROSS_SECTIONS=$HOME/nndc_hdf5/cross_sections.xml" >> $GITHUB_ENV
+          echo "OPENMC_ENDF_DATA=$HOME/endf-b-vii.1" >> $GITHUB_ENV
+          echo "MPI=${{ matrix.mpi }}" >> $GITHUB_ENV
+          echo "PHDF5=${{ matrix.mpi }}" >> $GITHUB_ENV
+          echo "OMP=${{ matrix.omp }}" >> $GITHUB_ENV
+          echo "DAGMC=${{ matrix.dagmc }}" >> $GITHUB_ENV
+          echo "EVENT=${{ matrix.event }}" >> $GITHUB_ENV
+          echo "VECTFIT=${{ matrix.vectfit }}" >> $GITHUB_ENV
+          
+      -
+        name: Apt dependencies
+        shell: bash
+        run: |
+          sudo apt -y update
+          sudo apt install -y mpich \
+                              libmpich-dev \
+                              libhdf5-serial-dev \
+                              libhdf5-mpich-dev \
+                              libeigen3-dev
+      -
+        name: install
+        shell: bash
+        run: |
+          echo "$HOME/NJOY2016/build" >> $GITHUB_PATH
+          $GITHUB_WORKSPACE/tools/ci/travis-install.sh
+      - 
+        name: before
+        shell: bash
+        run: $GITHUB_WORKSPACE/tools/ci/travis-before-script.sh
+
+      -
+        name: test
+        shell: bash
+        run: $GITHUB_WORKSPACE/tools/ci/travis-script.sh
+
+      - 
+        name: after_success
+        shell: bash
+        run: |
+          cpp-coveralls -i src -i include --exclude-pattern "/usr/*" --dump cpp_cov.json
+          coveralls --merge=cpp_cov.json

src/summary.cpp

@@ -14,6 +14,11 @@ namespace openmc {
 
 void write_summary()
 {
+
+#ifdef MPI
+  if (!mpi::master) return;
+#endif
+
   // Display output message
   write_message("Writing summary.h5 file...", 5);
 

tests/regression_tests/cpp_driver/driver.cpp

@@ -48,7 +48,11 @@ int main(int argc, char** argv) {
   // the summary file will be used to check that
   // temperatures were set correctly so clear
   // error output can be provided
+#ifdef OPENMC_MPI
+  if (openmc::mpi::master) openmc::write_summary();
+#else
   openmc::write_summary();
+#endif
 
   openmc_run();
   openmc_finalize();

tools/ci/travis-install.py

@@ -47,6 +47,7 @@ def install(omp=False, mpi=False, phdf5=False, dagmc=False):
 
     if dagmc:
         cmake_cmd.append('-Ddagmc=ON')
+        cmake_cmd.append('-DCMAKE_PREFIX_PATH=~/DAGMC')
 
     # Build in coverage mode for coverage testing
     cmake_cmd.append('-Dcoverage=on')

tools/ci/travis-install.sh

@@ -1,6 +1,11 @@
 #!/bin/bash
 set -ex
 
+# Upgrade pip, pytest, numpy before doing anything else
+pip install --upgrade pip
+pip install --upgrade pytest
+pip install --upgrade numpy
+
 # Install NJOY 2016
 ./tools/ci/travis-install-njoy.sh
 
@@ -14,11 +19,6 @@ if [[ $VECTFIT = 'y' ]]; then
     ./tools/ci/travis-install-vectfit.sh
 fi
 
-# Upgrade pip, pytest, numpy before doing anything else
-pip install --upgrade pip
-pip install --upgrade pytest
-pip install --upgrade numpy
-
 # Install mpi4py for MPI configurations
 if [[ $MPI == 'y' ]]; then
     pip install --no-binary=mpi4py mpi4py