Rethinking I/O in High-Performance Computing Environments

Colloq: Speaker: 
Nawab Ali
Colloq: Speaker Institution: 
The Ohio State University
Colloq: Date and Time: 
Fri, 2009-08-28 10:00
Colloq: Location: 
ORNL, Bldg. 5100, RM 130
Colloq: Host: 
Philip C. Roth
Colloq: Host Email: 
rothpc@ornl.gov
Colloq: Abstract: 
As the types of problems we solve in high-performance computing and otherareas become more complex, the amount of data generated and used is growingat a rapid rate. Today many terabytes of data are common;tomorrow petabytes of data will be the norm. One of the challenges inhigh-performance computing is to provide applications with high-speed dataaccess in a distributed, heterogeneous environment. In this talk,we will review the existing I/O paradigms in high-performance computingenvironments and examine better alternatives across both local and wide-areanetworks. We propose three different techniques to accommodatethe I/O requirements of scientific applications. We present a new designfor a high-performance, scalable parallel file system that obviates the needfor dedicated I/O and metadata servers by utilizing object-based storagedevices. We also propose a new remote I/O paradigm that takes advantage ofthe increasing popularity of high-speed networks and centralized datarepositories to perform I/O over wide-area networks. Furthermore, we presenta scalable I/O forwarding framework that bridges the increasing performancegap between the processing power and the I/O subsystems of massivelyparallel leadership-class machines such as the IBM Blue Gene/P.
Colloq: Speaker Bio: 
Nawab Ali is a PhD candidate with the Department of Computer Science andEngineering at The Ohio State University. His research interests span thebroad areas of computer architecture, operating systems, andhigh-performance computing. His current research focuses on issues relatedto I/O in high-performance computing environments.