CSC 456 Spring 2012/10a AJ: Difference between revisions

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===Fixed vs. Adaptive Sequential Prefetching===
===Fixed vs. Adaptive Sequential Prefetching===
Fixed sequential prefetching refers to prefetching of that occurs at a constant rate over time. Adaptive sequential prefetching, on the other hand, changes the rate of prefetching allowed over time. The prefetching rate is increased/decreased based on the count of successful prefetches. The rate is therefore dependent on workload and application (a start-up process will have a high rate of cold misses). While both methods improve efficiency, adaptive sequential prefetching is the most efficient as well as the most costly. (Dahlgren, Dubois)
Fixed sequential prefetching refers to prefetching of that occurs at a constant rate over time. Adaptive sequential prefetching, on the other hand, changes the rate of prefetching allowed over time. The prefetching rate is increased/decreased based on the count of successful prefetches. The rate is therefore dependent on workload and application (a start-up process will have a high rate of cold misses). While both methods improve efficiency, adaptive sequential prefetching is the most efficient as well as the most costly.


==Where they stand now==
==Where they stand now==

Revision as of 03:34, 13 April 2012

Prefetching and Consistency Models

Intro

Methods

Fixed vs. Adaptive Sequential Prefetching

Fixed sequential prefetching refers to prefetching of that occurs at a constant rate over time. Adaptive sequential prefetching, on the other hand, changes the rate of prefetching allowed over time. The prefetching rate is increased/decreased based on the count of successful prefetches. The rate is therefore dependent on workload and application (a start-up process will have a high rate of cold misses). While both methods improve efficiency, adaptive sequential prefetching is the most efficient as well as the most costly.

Where they stand now

Why?

References

http://impact.asu.edu/cse520fa08/Srivatsan.pdf