Consider the all-reduce operation in which each processor starts with an array of m words, and needs to get the global sum of the respective words in the array at each processor. This operation can be implemented on a ring using the following alternative: Single node accumulation of the elements of the array, followed by a one-to-all broadcast of the result array. For the above case, , compute the run time in terms of m, ts, and tw
Consider the all-reduce operation in which each processor starts with an array of m words, and needs to get the global sum of the respective words in the array at each processor. This operation can be implemented on a ring using the following alternative: Single node accumulation of the elements of the array, followed by a one-to-all broadcast of the result array. For the above case, , compute the run time in terms of m, ts, and tw
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
Problem 1PE
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- Consider the all-reduce operation in which each processor starts with an array of m words, and needs to get the global sum of the respective words in the array at each processor. This operation can be implemented on a ring using the following alternative:
- Single node accumulation of the elements of the array, followed by a one-to-all broadcast of the result array.
For the above case, , compute the run time in terms of m, ts, and tw.
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