Lecture 14

Learning objectives

After this class, you should be able to:

1. Given data and an associative operator, show the steps involved in the work-efficient parallel prefix algorithm.
2. Discuss the issue of thread divergence in the work-efficient algorithm.

Reading assignment

1. UIUC Lecture 14. (Skip inclusive scan in the slides, but read the idea behind a different approach to it in fig. 9.3 of the text.)
2. Chapter 9 of text, sections 9.4 - 9.6.

Exercises and review questions

• Exercises and review questions on current lecture's material
  1. Can you redesign the work-efficient algorithm so that in the reduction phase, even-indexed locations are updated?

• Preparation for the next lecture
  1. None.

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Last modified: 24 Feb 2015