1. Using the related reading as a starting point, research the number of instructions, addressing modes, etc. of RISC machines. Distinguish between prototype machines and commercially available systems.
2. What phases and techniques in a compiler aid in the process of pipelining?
3. Can the following statements be executed in parallel. Why or why not?
(a) X := B + 1
B := Y + 2
(b) X := 2
Y := X + 1
X := 3
4. A program is vectorizable if it can be executed correctly on a set of tightly coupled (synchronized) processors; a program is concurrentizable if it can be executed correctly on a set of loosely coupled (asynchronous) processors.
Which of these descriptions is applicable to each of these FORTRAN code segments?
(a) DO 10 I = 1, 100 10 A(I) = A(I) + B(I) * C(I)(b) DO 10 I = 2, 100 10 A(I) = A(I - 1) + B(I) * C(I)
(c) DO 10 I = 1, 99 10 A(I) = A(I + 1) + B(I) * C(I)