-Open questions
-==============
- * definition of load on heterogeneous hosts?
- * how to detect convergence?
- : No need to detect convergence. Computation stops when there
- nothing more to do.
- * how to manage link failures?
+Some notes about *load attributes
+=================================
+process::real_load Current *real* load.
+ Used for the computations.
+ Displayed in log messages.
+
+process::expected_load Current load estimation.
+ Used for load-balancing estimation, and for
+ diffusing to neighbors.
+ * Without bookkeeping, it equals real_load
+ minus pending sends.
+ * With bookkeeping, it corresponds to the "virtual
+ load".