[ns] a note that appears while runnnig SMAC !!

[Mathiew Moussa]

Hello All,
hope you guys are doing fine.

When I simulate the smac protocol on top of GPSR (a routing protocol  
for WNSs), I get the following output:
______________________
num_nodes is set 50
warning: Please use -channel as shown in tcl/ex/wireless-mitf.tcl
GPSR configuration file
INITIALIZE THE LIST xListHead
Loading connection pattern...
Loading scenario file...
Load complete...
Starting Simulation...

NOTE: SMAC is running with sleep-wakeup cycles on. Please make sure to  
run yr applications AFTER the nodes get sync'ed which is about 40sec  
for the default settings.

channel.cc:sendUp - Calc highestAntennaZ_ and distCST_
highestAntennaZ_ = 1.5,  distCST_ = 144.4
SORTING LISTS ...DONE!
node 3 originating destination -1.000000 -1.000000
node 3 originating destination -1.000000 -1.000000
Segmentation fault
_______________________

does anyone no Why the note appears and what it means exactly. I know  
its related to the statements.

Mac/SMAC set syncFlag_ 1
Mac/SMAC set dutyCycle_ 10

if u assign syncFlag to 0 you won't get the message but something goes  
wrong and u get segmentation fault

Any ideas of how to fix it and what they mean by ".. make sure to run  
yr applications AFTER the nodes get sync'ed .."

Thanks Alot.
Mathiew :)