Compare the performance of UDP with and without bandwidth matching by slowing down the UDP send code to match the receive code as advised by bandwidth matching [Brewer and Kuszmaul 1994]. Devise an experiment to see how much performance changes as a result. How should you change the send rate when two nodes send to the same destination? What if one sender sends to two destinations?
If you have access to an SMP and a cluster, write a program to measure latency of communication and bandwidth of communication between processors, as was plotted in Figure F.32 on page F-80.
Figure F.32
