a$)$ Consider the following loop

$[2]$

$[1][1]$

$[$CLO$-3,$ C$4$ Analysis, PLO$-4$ Investigation$]$

$[2]$

for i in range if~X$[$i$]$l$=0$

$(256)$:

Is the above loop vectorizable? If not, then show where the problem lies.

$)$ Compare the Intel's SIMD extension instructions and RISC$-$V vector instructions. c$)$ Consider the following code where A and B are memory$-$based arrays and $\text{'}$s$\text{'}$ a double precision FP

number also stored in memory:

for i in range $(200)$: A$[$i$]=$A$[$i$]*$s

B$[$i$]$B$[$i$]+$ A$[$i$]$ following table gives the stall cycles required between instruction producing the result and the

The

instruction using that result.

Instruction Producing Result

FP ALU operation FP ALU operation

Load Double

Load Double Integer ALU

Instruction Using Result

Another FP ALU operation Store Double

FP ALU operation

Store Double Conditional Branch

Stall cycles required

The corresponding assembly code without any scheduling is given as under:

$//$ double precision FP load

$41301$