1. Suppose you wish to run a program P with 5 x 10 instructions on a 3 GHz machine with a CPI of 2.3. What is the expected CPU time? 2. Suppose you have the following instruction mix. What is the CPI? ue 2 Memory ALU Branch Jump 40 30 8 2 3. Consider two different processors P1 and P2 executing the same instruction set with the clock rates and CPls given in the following table 1. If the processors each execute a program in 15 seconds, find the number of cycles and the number of instructions for each processor 2. We are trying to reduce the program execution time by 20%, but this leads to an increase of 25% in the CPI. What clock rate should we have to get this time reduction for each processor? P1 4 GHz 2 P2 4.5 GHz 1.5 You may find this table of clock cycle times and clock rates useful Time Measurement Time Unit Frequency Unit Seconds (s) Hertz (Hz) 10-3 10-6 10-9 Milliseconds (ms) Kilohertz (kHz) Microseconds (us) Megahertz (MHz) Gigahertz (GHz) Terahertz (THz) Nanoseconds (ns) 10 10-12 Picoseconds (ps)