Paper Info
Title
Thread-management techniques to maximize efficiency in multicore and simultaneous multithreaded microprocessors
Abstract
We provide an analysis of thread-management techniques that increase performance or reduce energy in multicore and Simultaneous Multithreaded (SMT) cores. Thread delaying reduces energy consumption by running the core containing the critical thread at maximum frequency while scaling down the frequency and voltage of the cores containing noncritical threads. In this article, we provide an insightful breakdown of thread delaying on a simulated multi-core microprocessor. Thread balancing improves overall performance by giving higher priority to the critical thread in the issue queue of an SMT core. We provide a detailed breakdown of performance results for thread-balancing, identifying performance benefits and limitations. For those benchmarks where a performance benefit is not possible, we introduce a novel thread-balancing mechanism on an SMT core that can reduce energy consumption. We have performed a detailed study on an Intel microprocessor simulator running parallel applications. Thread delaying can reduce energy consumption by 4% to 44% with negligible performance loss. Thread balancing can increase performance by 20% or can reduce energy consumption by 23%.
Year
DOI
Venue
2010
10.1145/1839667.1839671
TACO
Keywords
Field
DocType
microarchitecture,negligible performance loss,critical thread,energy consumption,critical threads,noncritical thread,overall performance,multi-threaded application,thread delaying,meeting point thread characterization,increase performance,performance benefit,smt core,energy-aware,thread balancing,thread-management technique,low-power,simultaneous multithreaded microprocessors,simultaneous multithreading
Computer science,Voltage,Queue,Microprocessor,Parallel computing,Real-time computing,Thread (computing),Thread management,Energy consumption,Multi-core processor,Microarchitecture
Journal
Volume
Issue
ISSN
7
2
1544-3566
Citations 
PageRank 
References 
3
0.37
23
Authors
6
Name
Order
Citations
PageRank
Ryan N. Rakvic1337.94
Q. Cai260.83
J. González330.37
Grigorios Magklis470245.64
Pedro Chaparro524817.27
Antonio González63178229.66