+/********** Tracing **********/
+/* from smpi_instr.c */
+void TRACE_internal_smpi_set_category (const char *category);
+const char *TRACE_internal_smpi_get_category (void);
+void TRACE_smpi_collective_in(int rank, int root, const char *operation);
+void TRACE_smpi_collective_out(int rank, int root, const char *operation);
+void TRACE_smpi_computing_init(int rank);
+void TRACE_smpi_computing_out(int rank);
+void TRACE_smpi_computing_in(int rank);