Determine whether the following questions are True or False

Determine whether the following questions are True or False. (A wrong answer leads to \"-1\" point not \"0\" point) If two microprocessors have a same ISA (Instruction Set Architecture), the IPC (Instruction Per Cycle) for same program should be same. When the dock cycle time is 100 ps, the clock frequency is 10 GHz. Benchmark is one program for evaluating performance. In ease of multi-cycle implementation, instructions are parallel executed for better performance compared to single-cycle implementation. CPI for single-cycle implementation is always 1.

Solution

1) False, IPC will depend on each processor\'s clock rate (say one is 2 Ghz and other is 3Ghz) and their CPI (clock cycles per instruction)

2) True
Clock frequency = 1/Clock cycle time = 1/100 pico seconds = 1/100 x 10^-12 seconds = 1/10^-10 seconds
= 10¹⁰ = 10 Ghz ( as 1Ghz = 10⁹ Hz)

3) False, Although benchmark is used for relative performance evaluation, it is not necessary that it should be one program. It can be set of programs which are applying different types of workloads to assess the performance

4) False, multi cycle implementation allows a single instruction to be run in multiple cycles, which is better than single cycle implementation in which all instructions take one cycle each (decided by longest instruction of all)

5) True, 1 clock cycle per instruction (by definition)