A Flexible Heterogeneous Multi-Core Architecture

Multi-core processors naturally exploit thread-level parallelism (TLP). However, extracting instruction-level parallelism (ILP) from individual applications or threads is still a challenge as application mixes in this environment are nonuniform. Thus, multi-core processors should be flexible enough...

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Vydáno v:16th International Conference on Parallel Architecture and Compilation Techniques (PACT 2007) s. 13 - 24
Hlavní autoři: Pericas, M., Cristal, A., Cazorla, F.J., Gonzalez, R., Jimenez, D.A., Valero, M.
Médium: Konferenční příspěvek Publikace
Jazyk:angličtina
Vydáno: IEEE 01.09.2007
Institute of Electrical and Electronics Engineers (IEEE)
Témata:
Application software
Arquitectura de computadors
Computer architecture
Concurrent computing
Delay
Engines
Informàtica
Microarchitecture
Multi-threading
Multicore processing
Multiprocessing systems
Multiprocessors
Parallel architectures
Parallel processing
Parallel processing (Electronic computers)
Processament en paral·lel (Ordinadors)
Reconfigurable architectures
Simultaneous multithreading processors
Throughput
Yarn
Àrees temàtiques de la UPC
ISBN:0769529445, 9780769529448
ISSN:1089-795X
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Shrnutí:Multi-core processors naturally exploit thread-level parallelism (TLP). However, extracting instruction-level parallelism (ILP) from individual applications or threads is still a challenge as application mixes in this environment are nonuniform. Thus, multi-core processors should be flexible enough to provide high throughput for uniform parallel applications as well as high performance for more general workloads. Heterogeneous architectures are a first step in this direction, but partitioning remains static and only roughly fits application requirements. This paper proposes the Flexible Heterogeneous Mul-tiCore processor (FMC), the first dynamic heterogeneous multi-core architecture capable of reconfiguring itself to fit application requirements without programmer intervention. The basic building block of this microarchitecture is a scalable, variable-size window microarchitecture that exploits the concept of Execution Locality to provide large-window capabilities. This allows to overcome the memory wall for applications with high memory-level parallelism (MLP). The microarchitecture contains a set of small and fast cache processors that execute high locality code and a network of small in-order memory engines that together exploit low locality code. Single-threaded applications can use the entire network of cores while multi-threaded applications can efficiently share the resources. The sizing of critical structures remains small enough to handle current power envelopes. In single-threaded mode this processor is able to outperform previous state-of-the-art high-performance processor research by 12% on SpecFP. We show how in a quad- threaded/quad-core environment the processor outperforms a statically allocated configuration in both throughput and harmonic mean, two commonly used metrics to evaluate SMTperformance, by around 2-4%. This is achieved while using a very simple sharing algorithm.
Bibliografie:SourceType-Conference Papers & Proceedings-1
ObjectType-Conference Paper-1
content type line 25
ISBN:0769529445
9780769529448
ISSN:1089-795X
DOI:10.1109/PACT.2007.4336196