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Unified and Separate Cache Memory Architecture

Test your understanding of unified and separate cache memory architectures, including Princeton and Harvard architectures. Learn how to calculate MemStall and understand the differences between these two architectures.

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@AmbitiousBoron
1/11
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Questions and Answers

What is the primary difference between Unified and Harvard Memory Architecture?

Memory location for Instruction and Data

What is the formula for MemStall in Unified Memory Architecture?

(MIss Rate)(Miss Penalty)

What does %inst represent in the formula for MemStall?

Fraction of Instruction

What is the formula for %inst?

<p>1/(1 + %load + %store)</p> Signup and view all the answers

What does MemStall for Data represent in Harvard Memory Architecture?

<p>Memory stall for load and store operations</p> Signup and view all the answers

Which of the following is the correct formula for MemStall in a Harvard (Separate) Memory Architecture?

<p>((1/(1 + %load + %store))(Im1) + ((%load + %store)/(1 + %load + %store))(Dm1))(M)</p> Signup and view all the answers

What is the formula for CPIStall in terms of MemStall?

<p>(1 + %load + %store)(MemStall)</p> Signup and view all the answers

In the example given, what is the value of MemStall for the Unified Memory Architecture?

<p>5</p> Signup and view all the answers

What is the formula for Speedup in terms of CPI?

<p>CPI/CPIPerfect</p> Signup and view all the answers

In the example given, what is the value of CPI for the Separate Memory Architecture?

<p>7.5</p> Signup and view all the answers

What is the Speedup of the Separate Memory Architecture compared to the Unified Memory Architecture?

<p>1.08 times</p> Signup and view all the answers

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