Answer to Question #25469 in Programming & Computer Science for Nazeera

Question

A computer system is using pentium-5 processor with 5 stages in pipeline processing with cycle time
of 5ns, whereas another computer system is using pentium-7 processor with 7 stages in pipeline
processing with cycle time of 3.75 ns. A program is executing which is containing a loop of 5
instructions in that four arithmetic instructions and a branch instruction which is at the beginning of
the loop). There are dependencies in arithmetic instruction but are consecutive. Due to this
dependency there are stalls in pipeline. Pentium-5 processor gives 1 stall, whereas Pentium 7
processor gives 2 stalls. Due to branch instruction Pentium-5 processor induces 3 stalls and Pentium-
7 processor induces 5 stalls. According to these statements, which one of the following is TRUE?

(a) Pentium 5 processor will execute the program much faster in steady state.
(b) Pentium 7 processor will execute the program much faster in steady state.
(c) Both will execute with the same speed
(d) None of these

Answer 1

Statement (b) is true, because higher speed ofPentium-7 provides faster processing stalls in pipeline