$ ./tbb20121003_flow_graph_bug_v2.exe
sending number 0.00
received number 0.00
sending number 1.50
sending number 3.00
received number 2.25
sending number 4.50
received number 9.00
sending number 6.00
received number 20.25
received number 36.00
sending number 7.50
sending number 9.00
received number 56.25
sending number 10.50
received number 81.00
sending number 12.00
received number 110.25
$