$ ${bindir:=.}/s4u-activityset-waitany ${platfdir}/hosts_with_disks.xml "--log=root.fmt:[%7.6r]%e[%5a]%e%m%n"
> [0.000000] [alice] Send 'Message'
> [0.000000] [ bob] Create my asynchronous activities
-> [0.000000] [ bob] Wait for asynchrounous activities to complete
+> [0.000000] [ bob] Wait for asynchronous activities to complete
+> [2.000000] [ carl] Send 'Control Message'
+> [2.000000] [ bob] Completed a Mess
> [3.000000] [ bob] Completed an I/O
> [5.000000] [ bob] Completed an Exec
> [5.197828] [ bob] Completed a Comm