From c890ad4b8bda7a78fc3c80e78fbecc6c566991e8 Mon Sep 17 00:00:00 2001
From: Luc Grosheintz <luc.grosheintz@gmail.com>
Date: Mon, 2 Dec 2024 12:48:52 +0100
Subject: [PATCH] Run parallel examples during CI. (#1063)

---
 .github/run_examples.sh                      | 7 ++++++-
 .github/workflows/ci.yml                     | 4 +++-
 src/examples/parallel_hdf5_collective_io.cpp | 4 ++--
 3 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/.github/run_examples.sh b/.github/run_examples.sh
index 9af9a6ef1..a60bd6d3e 100755
--- a/.github/run_examples.sh
+++ b/.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
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d502ef15c..d81dc1644 100644
--- a/.github/workflows/ci.yml
+++ b/.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
diff --git a/src/examples/parallel_hdf5_collective_io.cpp b/src/examples/parallel_hdf5_collective_io.cpp
index 7261b7cf1..1189702b0 100644
--- a/src/examples/parallel_hdf5_collective_io.cpp
+++ b/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) {