1) performance

We have two different processors running a set of benchmarks. Processor A executes 10 Millions instructions, has CPI 1.7.  Processor B executes 12 Millions instructions, has CPI 1.5.  Assume both processors runs at the same clock rate.  Which one is faster? (show your calculation)

2) RISC-V instruction

Write RISC-V assembly program to do this (assuming data is 32-bit integer):

Count the number of odd integer in an array of positive integer. The array is terminated by -1.

You can use any tools on internet.
submit your code and write explanation.
I can only "read" your program and not "run" it so without your explanation it is difficult to give a score.


3)  pipeline

For each code sequence below, state whether it must stall, can avoid stalls using only forwarding, or can execute without stalling or forwarding.

3.1) sequence 1

lw x10, 0(x10)
add x11, x10, x10

3.2) sequence 2

add x11, x10, x10
addi x12, x10, 5
addi x14, x11, 5

3.3) sequence 3

addi x11, x10, 1
addi x12, x10, 2
addi x13, x10, 3
addi x14, x10, 4
addi x15, x10, 5