[CSENews] [Fwd: CSE Colloquium Friday, March 20: Song Jiang]

[Teresa Isela VanderSloot]

-------- Original Message --------
Subject: 	CSE Colloquium Friday, March 20: Song Jiang
Date: 	Mon, 16 Mar 2009 18:09:37 -0400
From: 	glasskim <glasskim at cse.msu.edu>
To: 	eng_all at egr.msu.edu



  Supporting High Performance I/O with Effective Caching and Prefetching


    Spring 2009 CSE Colloquium Series <http://www.cse.msu.edu/?Pg=143&Col=2>

*Song Jiang <http://www.ece.eng.wayne.edu/%7Esjiang/>*

Assistant Professor
Department of Electrical and Computer Engineering
Wayne State University

Friday, March 20
11:00 AM - 12:00 PM 
3105 Engineering Building 
<http://www.maps.msu.edu/interactive/index.php?location=eb>

Host: Li Xiao <http://www.cse.msu.edu/%7Elxiao/>


      Abstract


A large spectrum of data-intensive applications, ranging from small 
system tools such as CVS and grep, to terascale simulation applications 
that process huge amounts of scientific data, demand efficient I/O 
support. In almost all computing platforms, the ubiquitous hard disk 
remains the most cost-effective medium for on-line storage. While the 
growth of hard-disk capacity nicely matches the rapidly increasing 
demand for storage, its electromechanical nature is such that 
performance improvements lag painfully far behind that of processor 
performance. We continue to observe that the disk bottleneck is 
worsening in modern computer systems.

In this talk I will present our research on improving disk I/O 
performance through a better utilization of disk buffer cache. I will 
describe an integrated caching and prefetching scheme, called DiskSeen, 
that not only makes access patterns of applications exploitable by the 
buffer cache, but also makes the data layout of the disk visible and 
exploitable by the buffer cache. By making disk layout visible to the 
buffer cache, Diskseen provides functionalities that existing systems do 
not have. Examples includes random disk accesses being treated 
differently than sequential accesses so that disk accesses become more 
sequential, and prefetching being carried out directly at the disk level 
using history access information so that metadata and inter-file 
prefetching is enabled. Using Linux kernel implementations I demonstrate 
that this technique can significantly improve the performance of a wide 
variety of applications.


      Biography

Dr. Song Jiang is an assistant professor at the ECE department of Wayne 
State University. He received his Ph.D in computer science at the 
College of William and Mary in 2004. After that he had been a 
postdoctoral researcher at Los Alamos National Laboratory for two years. 
He is the recipient of the 2009 NSF Faculty Early Career Development 
Award. His current research projects include the provisioning of storage 
resources, middleware/compiler-level I/O arrangement, and management of 
buffer cache for high scalability in multi-processor/core systems. 
Several of his proposed algorithms, such as Swap-token and Clock-pro, 
have been officially incorporated into the Linux and NetBSD kernels.

-- 
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Teresa Isela VanderSloot, M.S.A.
Academic Specialist/Advisor
Computer Science and Engineering
College of Engineering
Michigan State University
3201 Engineering Building
East Lansing, MI 48824-1226
Phone: (517) 353-5455
Fax: (517) 432-1061
www.cse.msu.edu/~iselava1

Schedule an appointment:https://ntweb11.ais.msu.edu/aas/
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