Question: undefined 4. (30 points) Consider using four processors to add 1024 numbers and the result is kept in a variable sum. We assume the data

undefined 4. (30 points) Consider using four processors to add 1024 numbers undefined

4. (30 points) Consider using four processors to add 1024 numbers and the result is kept in a variable sum. We assume the data is evenly split among the four processors. What is the performance predicted by CTA model (non-local access time is 1) in the following two scenarios: 1) the sum variable is allocated to one processor's memory; 2) each thread keeps a local copy of the sum. 4. (30 points) Consider using four processors to add 1024 numbers and the result is kept in a variable sum. We assume the data is evenly split among the four processors. What is the performance predicted by CTA model (non-local access time is 1) in the following two scenarios: 1) the sum variable is allocated to one processor's memory; 2) each thread keeps a local copy of the sum

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