Question

15. A given application written in Java, runs 15 seconds on a desktop computer. A new Java compiler is released that requires only .6 times as many instructions as the old compiler. Unfortunately, it increases the CPI by a factor of 1.1. How fast can we expect the application to run using the new compiler?! a. 15 X 0.6 = 8.2 seconds 1.1 applicatiely, it increquires only ads on a do 13x0.6 b. 15 X 1.1 = 27.5 seconds 0.6 c. 15 X 0.6 X 1.1 = 9.9 seconds d. 1.1 X0.6 = .044 seconds 15 16. Today's computers contain microprocessors with multiple processors on a single chip. This can be expected to improve , but do little for a. Throughput, Response time b. CPI, Clock rate c. Throughput, CPI d. Response time, Throughput , which is a technique of overlapping the 17. Today's processors use execution of instructions. a. Paralleling b. Instruction Mapping c. Instruction prefetching d. Pipelining 18. For an accurate comparison of processor performance, programs are specially chosen to measure performance. These programs are called a. Test programs b. Common use applications c. Benchmarks d. System Performance Evaluation Cooperative (SPEC)

Answer 1

17.Todays processors use pipelining , which is the technique of overlapping the execution of instructions.

Instruction pipelining is a technique for implementing instruction level parallelism within processors.