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Analytical Modeling: Sequential and Parallel Algorithms

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Analytical Modeling: Sequential and Parallel Algorithms

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Questions and Answers

What is the total overhead in a parallel system?

TS + TP

Tall - TS (correct)

p TP - TS

TS - TP

What is the ratio of the time taken to solve a problem on a single processor to the time required to solve the same problem on a parallel computer?

Efficiency

Parallel time

Serial time

Speedup (correct)

What is the cost of a parallel system?

TS / p

p x TP (correct)

p x TS

TP / p

What is the parallel runtime of a program?

The time that elapses from the moment the first processor starts to the moment the last processor finishes execution (A) Signup and view all the answers

What is the speedup of adding n numbers on n processors?

O(n/log2n) (A) Signup and view all the answers

What is the major difference between sequential and parallel execution?

Sequential execution involves the execution of a single task from start to finish, while parallel execution involves the execution of multiple tasks, not necessarily at the same time. (B) Signup and view all the answers