7284

NUMA Data-Access Bandwidth Characterization and Modeling

Ryan Karl Braithwaite
Virginia Polytechnic Institute
Virginia Polytechnic Institute, 2012

@phdthesis{braithwaite2012numa,

   title={NUMA Data-Access Bandwidth Characterization and Modeling},

   author={Braithwaite, R.K.},

   year={2012},

   school={Virginia Polytechnic Institute and State University}

}

Download Download (PDF)   View View   Source Source   

613

views

Clusters of seemingly homogeneous compute nodes are increasingly heterogeneous within each node due to replication and distribution of node-level subsystems. This intra-node heterogeneity can adversely affect program execution performance by inflicting additional data-access performance penalties when accessing non-local data. In many modern NUMA architectures, both memory and I/O controllers are distributed within a node and CPU cores are logically divided into "local" and "remote" data-accesses within the system. In this thesis a method for analyzing main memory and PCIe data-access characteristics of modern AMD and Intel NUMA architectures is presented. Also presented here is the synthesis of data-access performance models designed to quantify the effects of these architectural characteristics on data-access bandwidth. Such performance models provide an analytical tool for determining the performance impact of remote data-accesses for a program or access pattern running in a given system. Data-access performance models also provide a means for comparing the data-access bandwidth and attributes of NUMA architectures, for improving application performance when running on these architectures, and for improving process/thread mapping onto CPU cores in these architectures. Preliminary examples of how programs respond to these data-access bandwidth characteristics are also presented as motivation for future work.
No votes yet.
Please wait...

* * *

* * *

HGPU group © 2010-2017 hgpu.org

All rights belong to the respective authors

Contact us: