diff --git a/hello1.c b/hello1.c
new file mode 100644
index 0000000..86d4250
--- /dev/null
+++ b/hello1.c
@@ -0,0 +1,11 @@
+#include "mpi.h"
+#include <stdio.h>
+int main( int argc, char **argv ){
+int rank, size;
+MPI_Init( &argc, &argv );
+MPI_Comm_rank( MPI_COMM_WORLD, &rank );
+MPI_Comm_size( MPI_COMM_WORLD, &size );
+printf( "Hello world! I'm process %d of %d\n",rank, size );
+MPI_Finalize();
+return 0;
+}