pare the processors’ access to printers and other I/O devices for the master/slave and the symmetric multiprocessing configurations. Give a real-life example where the master/slave configuration might be preferred.
2. Compare the processors’ access to main memory for the loosely coupled configuration and the symmetric multiprocessing configurations. Give a real-life example where the symmetric configuration might be preferred.
3. Describe the programmer’s role when implementing explicit parallelism.
4. Describe the programmer’s role when implementing implicit parallelism.
5. What steps does a well-designed multiprocessing system follow when it detects that a processor is failing? What is the central goal of most multiprocessing systems? 6. Give an example from real life of busy waiting.
7. In the last chapter, we discussed deadlocks. Describe in your own words why mutual exclusion is necessary for multiprogramming systems.
8. Compare and contrast multiprocessing and concurrent processing. Describe the role of process synchronization for both systems.
9. Describe the purpose of a buffer and give an example from your own experience where its use clearly benefits system response.
10. Consider this formula:
G = (A + C2) * (E1)3 / D + B
a. Show the order that a processor would follow to calculate G. To do so, break down the equation into the correct order of operations with one calculation per step. Show the formula for each step.
b. Find the value of G: if A = 5, B = 10, C = 3, D = 8, and E = 5.
11. Consider this formula:
G = D + (A + C2) * E / (D + B)3
a. Show the order that a processor would follow to calculate G. To do so, break down the equation into the correct order of operations with one calculation per step. Show the formula for each step.
b. Find the value of G: if A = 5, B = 10, C = 3, D = 8, and E = 5.
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Exercises
12. Rewrite each of the following arithmetic expressions to take advantage of