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QUESTION 59 Consider a multi-core processor with heterogeneous cores: A, B, C and D where core B runs two times as fast as A, core C runs four times as fast as A and cores D and A run at the same speed (i.e. have the same processor frequency, micro architecture etc.). Suppose an application needs to compute the square of each element in an array of 256 elements. Assume unit time, consider the following two divisions of labor: Core A Core B Core C Core D Computer Alpha 40 elements 80 elements 160 elements Unused Computer Beta 1) Total Execution Time of Alpha 2) Total Execution Time of Beta 3) Utilization of Alpha 4) Utilization of Beta 64 elements 32 elements 128 elements 64 elements Compute: (1) the total execution time taken in the two cases and (2) cumulative processor utilization (Amount of total time the processors are not idle divided by the total execution time).

QUESTION 59 Consider a multi-core processor with heterogeneous cores: A, B, C and D where core B runs two times as fast as A, core C runs four times as fast as A and cores D and A run at the same speed (i.e. have the same processor frequency, micro architecture etc.). Suppose an application needs to compute the square of each element in an array of 256 elements. Assume unit time, consider the following two divisions of labor: Core A Core B Core C Core D Computer Alpha 40 elements 80 elements 160 elements Unused Computer Beta 1) Total Execution Time of Alpha 2) Total Execution Time of Beta 3) Utilization of Alpha 4) Utilization of Beta 64 elements 32 elements 128 elements 64 elements Compute: (1) the total execution time taken in the two cases and (2) cumulative processor utilization (Amount of total time the processors are not idle divided by the total execution time).

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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QUESTION 59 Consider a multi-core processor with heterogeneous cores: A, B, C and D where core B runs two times as fast as A, core C runs four times as fast as A and cores D and A run at the same speed (i.e. have the same processor frequency, micro architecture etc.). Suppose an application needs to compute the square of each element in an array of 256 elements. Assume unit time, consider the following two divisions of labor: Core A Core B Core C Core D Computer Alpha 40 elements 80 elements 160 elements Unused Computer Beta 1) Total Execution Time of Alpha 2) Total Execution Time of Beta 3) Utilization of Alpha 4) Utilization of Beta 64 elements 32 elements 128 elements 64 elements Compute: (1) the total execution time taken in the two cases and (2) cumulative processor utilization (Amount of total time the processors are not idle divided by the total execution time).
Transcribed Image Text:QUESTION 59 Consider a multi-core processor with heterogeneous cores: A, B, C and D where core B runs two times as fast as A, core C runs four times as fast as A and cores D and A run at the same speed (i.e. have the same processor frequency, micro architecture etc.). Suppose an application needs to compute the square of each element in an array of 256 elements. Assume unit time, consider the following two divisions of labor: Core A Core B Core C Core D Computer Alpha 40 elements 80 elements 160 elements Unused Computer Beta 1) Total Execution Time of Alpha 2) Total Execution Time of Beta 3) Utilization of Alpha 4) Utilization of Beta 64 elements 32 elements 128 elements 64 elements Compute: (1) the total execution time taken in the two cases and (2) cumulative processor utilization (Amount of total time the processors are not idle divided by the total execution time).
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