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2010•International Conference on Networked ComputingRequires access

Using Transactional Memory on CC-NUMA systems

Ruibo Wang, Kai Lü

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Abstract

Transactional Memory (TM) research has focused on multi-core processors and SMP machines; limited research has been aimed at the clusters, leaving the area of CC-NUMA(Cache Coherent Non-Uniform Memory Access) systems unexplored. The CC-NUMA system's memory is physically distributed which brings the different latency between local and remote memory access. The TMs designed for shared memory architecture are not suitable for CC-NUMA's distributed memory architecture. To be aware of the different memory access latency, we introduce a layered conflict detection strategy corresponding to the system's layer. The layered strategy provides a good practical performance on CC-NUMA systems.

About this research paper

What this paper is about

Transactional Memory (TM) research has focused on multi-core processors and SMP machines; limited research has been aimed at the clusters, leaving the area of CC-NUMA(Cache Coherent Non-Uniform Memory Access) systems unexplored. The CC-NUMA system's memory is physically distributed which brings the different latency between local and remote memory access. The TMs designed for shared memory architecture are not suitable for CC-NUMA's distributed memory architecture. To be aware of the different memory access latency, we introduce a layered conflict detection strategy corresponding to the system's layer. The layered strategy provides a good practical performance on CC-NUMA systems.

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Available abstract

Transactional Memory (TM) research has focused on multi-core processors and SMP machines; limited research has been aimed at the clusters, leaving the area of CC-NUMA(Cache Coherent Non-Uniform Memory Access) systems unexplored. The CC-NUMA system's memory is physically distributed which brings the different latency between local and remote memory access. The TMs designed for shared memory architecture are not suitable for CC-NUMA's distributed memory architecture. To be aware of the different memory access latency, we introduce a layered conflict detection strategy corresponding to the system's layer. The layered strategy provides a good practical performance on CC-NUMA systems.

Key concepts: Computer science, Cache-only memory architecture, Non-uniform memory access, Uniform memory access, Transactional memory, Interleaved memory, Shared memory, Distributed shared memory

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