Showing 77 results for Author: Thomas J. Naughton III
Feb, 2009
Conference Paper
Proactive fault tolerance (FT) in high-performance computing is a concept that prevents compute node failures from impacting running parallel applications by preemptively migrating application parts away from nodes that are about to fail. This paper provides a foundation for proactive FT by defining its architecture and classifying implementation options. This paper furthe…
Jan, 2009
Conference Paper
OSCAR, a tool for the deployment and the management of clusters, has historically provided a simple Graphical User Interface (GUI) that aims to hide technical details associated with the management of such distributed platforms. The OSCAR GUI followed a fairly monolithic architecture, which was difficult to extend. Thankfully, OSCAR developers have made deep modifications…
Nov, 2007
Conference Paper
The topic of virtualization has received renewed attention. Xen is a popular open source type-I hypervisor. The Xen hypervisor currently has limited capabilities for runtime modification to the core hypervisor, which impairs research into dynamic adaptation for system-level virtualization. This paper discusses recent investigations into the feasibility of extending Xen to…
Aug, 2007
Conference Paper
Recently there has been an increased interest in the use of system-level virtualization using mature solutions such as Xen, QEMU, or VMWare. These virtualization platforms are being used in distributed and parallel environments including high performance computing. The use of virtual machines within such environments introduces new challenges to system management. These in…
Mar, 2007
Conference Paper
System level virtualization provides several advantages: (i) customization is eased since virtual machines may be based on different systems; (ii) virtual machines are isolated from hardware, subsequently applications are isolated via the virtual machines; (iii) basic fault tolerance mechanisms -- pro-active fault tolerance through virtual machine migration and virtual mac…