diff --git a/projet/MPI_collectives.def b/projet/MPI_collectives.def
new file mode 100644
index 0000000000000000000000000000000000000000..24aad8dd91798d26abe74ac915ef6bbb841c51ae
--- /dev/null
+++ b/projet/MPI_collectives.def
@@ -0,0 +1,5 @@
+DEFMPICOLLECTIVES(MPI_INIT, "MPI_Init")
+DEFMPICOLLECTIVES(MPI_FINALIZE, "MPI_Finalize")
+DEFMPICOLLECTIVES(MPI_REDUCE, "MPI_Reduce")
+DEFMPICOLLECTIVES(MPI_ALL_REDUCE, "MPI_AllReduce")
+DEFMPICOLLECTIVES(MPI_BARRIER, "MPI_Barrier")