Run parallel examples during CI. (#1063)

Author: 1uc

.github/run_examples.sh

@@ -16,5 +16,10 @@ fi
 for f in "${examples_dir}"/*_bin
 do
   echo "-- ${f}"
-  "${f}"
+  if [[ "${f}" == *"parallel_"* ]]
+  then
+    mpiexec -np 2 "${f}"
+  else
+    "${f}"
+  fi
 done

.github/workflows/ci.yml

@@ -92,6 +92,9 @@ jobs:
       run: |
         ! ctest --verbose -C $BUILD_TYPE | grep HDF5-DIAG
 
+    - name: Examples
+      working-directory: ${{github.workspace}}/build/src/examples
+      run: $GITHUB_WORKSPACE/.github/run_examples.sh
 
   # Job testing several versions of hdf5
   # ===================================================
@@ -136,7 +139,6 @@ jobs:
       run: |
         ! ctest --verbose -C $BUILD_TYPE | grep HDF5-DIAG
 
-
     - name: Examples
       working-directory: ${{github.workspace}}/build/src/examples
       run: $GITHUB_WORKSPACE/.github/run_examples.sh

src/examples/parallel_hdf5_collective_io.cpp

@@ -92,7 +92,7 @@ int main(int argc, char** argv) {
         std::vector<size_t> offset{std::size_t(mpi_rank), 0ul};
         std::vector<size_t> count{1ul, 2ul};
 
-        dataset.select(offset, count).write(data, xfer_props);
+        dataset.select(offset, count).squeezeMemSpace({0}).write(data, xfer_props);
         check_collective_io(xfer_props);
 
         // Let's ensure that everything has been written do disk.
@@ -104,7 +104,7 @@ int main(int argc, char** argv) {
 
         // MPI ranks don't have to read non-overlapping parts, but in this
         // example they happen to. Again all rank participate in this call.
-        dataset.select(offset, count).read(data, xfer_props);
+        dataset.select(offset, count).squeezeMemSpace({0}).read(data, xfer_props);
         check_collective_io(xfer_props);
 
     } catch (Exception& err) {