Problem 1: Delayed Principles (25 points)

1.1

Fill in the following table regarding the latencies and initiation intervals of each functional unit. Each correct value is worth one point.

Unit	Latency	Initiation Interval
INT ALU
FP ADD
FP MULT
FP DIV

1.2

Using the information in the FU table and the pipeline structure, determine the latencies in the MMM-MIPS for potentially dependent pairs of ALU instructions in the table below.

For example, the value 0 corresponds to the latency between an INT ALU instruction producing a result that another INT ALU instruction needs. Each correct value is worth (1) point.

Hint: for each dependent instruction pair, identify which stage of the producer instruction is the ``source'' of the value that must be ``received'' by the consumer instruction.

Producer	Consumer	Latency
Instruction	Instruction
INT ALU	INT ALU	0
INT ALU	INT LOAD
INT ALU	BNEZ
INT Load	INT ALU
FP ADD	FP ALU
FP MUL	FP ALU
FP Load	FP ALU

Instruction Latency Table

1.3

As in the previous problem, determine the latencies associated with the pairs of operations given below. These are two (2) points per correct entry, and partial credit will be given for clearly labeled work demonstrating your thought process.

Producer	Consumer	Latency
Instruction	Instruction
INT ALU	INT Store
INT ALU	FP Load
INT ALU	FP Store
INT ALU	FP ALU
FP ALU	INT ALU
FP ALU	FP Load
FP ALU	FP Store
FP Load	FP ALU
FP Store	FP ALU

Instruction Latency Table for Problem 1.3

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