Use Valgrind suppression files and replace exit with MPI_Abort

Added a Valgrind suppression file to handle internal MPI-related leaks, ensuring cleaner Valgrind output during tests. Replaced `exit` calls with `MPI_Abort` to properly terminate MPI programs on failure. Updated test script to utilize the new suppression file in Valgrind commands.

Author: allnes

scripts/run_tests.py

@@ -31,7 +31,9 @@ def __init__(self):
         self.__ppc_env = None
         self.work_dir = None
 
-        self.valgrind_cmd = "valgrind --error-exitcode=1 --leak-check=full --show-leak-kinds=all"
+        suppression_file = Path(self.__get_project_path()) / "valgrind.supp"
+        self.valgrind_cmd = (f"valgrind --suppressions={suppression_file} "
+                             f"--error-exitcode=1 --leak-check=full --show-leak-kinds=all")
 
         if platform.system() == "Windows":
             self.mpi_exec = "mpiexec"

tasks/runners/functional.cpp

@@ -31,7 +31,7 @@ class UnreadMessagesDetector : public ::testing::EmptyTestEventListener {
           stderr,
           "[  PROCESS {}  ] [  FAILED  ] {}.{}: MPI message queue has an unread message from process {} with tag {}",
           rank, "test_suite_name", "test_name", status.MPI_SOURCE, status.MPI_TAG);
-      exit(EXIT_FAILURE);  // NOLINT
+      MPI_Abort(MPI_COMM_WORLD, EXIT_FAILURE);
     }
 
     MPI_Barrier(MPI_COMM_WORLD);

tasks/runners/performance.cpp

@@ -31,7 +31,7 @@ class UnreadMessagesDetector : public ::testing::EmptyTestEventListener {
                    "[  PROCESS {}  ] [  FAILED  ] MPI message queue has an unread message from process {} with tag {}",
                    rank, status.MPI_SOURCE, status.MPI_TAG);
 
-      exit(EXIT_FAILURE);  // NOLINT
+      MPI_Abort(MPI_COMM_WORLD, EXIT_FAILURE);
     }
 
     MPI_Barrier(MPI_COMM_WORLD);

valgrind.supp

@@ -0,0 +1,15 @@
+{
+   suppress mpi init internal leaks
+   Memcheck:Leak
+   ...
+   fun:MPI_Init
+   ...
+}
+
+{
+   suppress mpi finalize internal leaks
+   Memcheck:Leak
+   ...
+   fun:MPI_Finalize
+   ...
+}