* segfault with ./loba cluster1000.xml -N64 -a fairstrategy
+ this is a deadlock occuring when:
+ - a process is in the finalize stage;
+ - all processes but one are blocked on receive;
+ - the process that is still running owns all the remaining load,
+ and sends it all to the finalizing process, and then goes in
+ blocking receive.
+ The finalizing process receives the load, and blocks again,
+ waiting for a close message.
+ All processes are then blocked, and non-one is able to see that
+ there is no more load in the system!
+
* verify bookkeeping version.
* add several metrics
