CA 714CA - Homework #3
Homework 3 is due Wed, 2/27/02.
This homework covers Chapter 8.
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Assume the overhead to send a zero-length data packet on an Ethernet is
500 microseconds and an unloaded network can transmit at 90% of the peak
rating. Plot the delivered bandwidth as the data transfer size varies
frome 32 bytes to 1500 for the following peak ratings. Plot
as separate line for each max bandwidth: 10 Mbit/sec, 100 Mbit/sec, 1000
Mbit/sec. From the plot, briefly describe the affect of longer data
transfer size to the delivered bandwith and the importance of zero-length
data packet overhead in each band width case.
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Go to the TPC web site and look at which architecutres clusters vs some
form of multiprocessors dominate each benchmark in performance and in cost
performance. Discuss why this vary between benchmarks.
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Do a similar study for Linpack benchmarks (List of Top 500 super computers).
See if there is older versions of the list so you can see how machine types
and brand names change over time.