extend test script to support PPC_DISABLE_VALGRIND flag and update CI workflow accordingly

Author: allnes

.github/workflows/ubuntu.yml

@@ -362,6 +362,7 @@ jobs:
           PPC_NUM_PROC: 2
           OMPI_ALLOW_RUN_AS_ROOT: 1
           OMPI_ALLOW_RUN_AS_ROOT_CONFIRM: 1
+          PPC_DISABLE_VALGRIND: 1
       - name: Upload coverage reports to Codecov
         uses: codecov/codecov-action@v5.4.3
         with:

scripts/run_tests.py

@@ -106,7 +106,11 @@ def __get_gtest_settings(repeats_count, type_task):
         return command
 
     def run_threads(self):
-        if platform.system() == "Linux" and not self.__ppc_env.get("PPC_ASAN_RUN"):
+        if (
+            platform.system() == "Linux"
+            and not self.__ppc_env.get("PPC_ASAN_RUN")
+            and not self.__ppc_env.get("PPC_DISABLE_VALGRIND")
+        ):
             for task_type in ["seq", "stl"]:
                 self.__run_exec(
                     shlex.split(self.valgrind_cmd)
@@ -121,7 +125,11 @@ def run_threads(self):
             )
 
     def run_core(self):
-        if platform.system() == "Linux" and not self.__ppc_env.get("PPC_ASAN_RUN"):
+        if (
+            platform.system() == "Linux"
+            and not self.__ppc_env.get("PPC_ASAN_RUN")
+            and not self.__ppc_env.get("PPC_DISABLE_VALGRIND")
+        ):
             self.__run_exec(
                 shlex.split(self.valgrind_cmd)
                 + [str(self.work_dir / "core_func_tests")]