Instruction-Level Parallelism

• Suppose we had a machine which could execute lots of instructions per cycle, limited only by data dependences

• No load or store stall cycles gives us an idealized parallelism profile

Average CPI = 5/12

LD X

LD Y

LD Z

LD W

+

-

-

*

ST Q

+

ST P

ST T

time step

Simultaneous

Instructions

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