Abstract
dc:description.abstractClusters 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.
Degree
thesis:*- Name thesis:degree_name
- Master of Science
- Level thesis:degree_level
- masters
- Discipline thesis:degree_discipline
- Computer Science and Applications
- Department dc:contributor.department
- Computer Science and Applications
- Grantor dc:publisher
- Virginia Tech
- Year dc:date.issued
- 2012
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Braithwaite, Ryan Karl
- Chair dc:contributor.committeechair
-
- Feng, Wu-chun
- Committee members dc:contributor.committeemember
-
- Ribbens, Calvin J.
- McCormick, Patrick
Subjects
dc:subject × 3Rights
dc:rights- Statement dc:rights
-
- In Copyright
- Licence dc:rights.uri
Identifiers
dc:identifier.*- Dc Identifier Other
- etd-02062012-121115
- OAI identifier oai:identifier
- oai:vtechworks.lib.vt.edu:10919/31151