added unit-test directory

unit-test/CMakeLists.txt

@@ -0,0 +1,9 @@
+#set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g -O0 -fsanitize=leak")
+add_executable(hello hello.c)
+target_link_libraries(hello ${MPI_LIBRARIES})
+target_include_directories(hello PRIVATE ${MPI_INCLUDE_PATH})
+# find executable path
+# add test to run the executable with mpirun
+#add_test(NAME Unit-test COMMAND "srun" "${CMAKE_BINARY_DIR}/unit-test/hello")
+add_test(NAME Unit-test COMMAND "mpirun" "${CMAKE_BINARY_DIR}/unit-test/hello")
+set_property(TEST Unit-test PROPERTY ENVIRONMENT LD_PRELOAD=/leonardo/home/userinternal/amonteru/countdown/build/src/libcntd.so)

unit-test/hello.c

@@ -0,0 +1,19 @@
+// Mpi hello world program
+//#include "mpe_log.h"
+#include <stdio.h>
+#include <mpi.h>
+
+int main() {
+    int rank, size;
+    int event1, event2;
+
+    MPI_Init(NULL, NULL);
+
+    MPI_Comm_rank(MPI_COMM_WORLD, &rank);
+    MPI_Comm_size(MPI_COMM_WORLD, &size);
+
+    printf("Hello world from rank %d of %d\n", rank, size);
+
+    MPI_Finalize();
+    return 0;
+}