Circular Stack Management for Scratchpad Memory

August 20th, 2010 No comments
A nice Stack Management technique for a limited local memory architecture like IBM Cell, is presented at ASP-DAC and in IEEE Trans. CAD in 2009. The pointer problem was extremely difficult to handle correctly, but we managed to do it, at least from the correctness point of view.

A dynamic scratch pad memory (SPM) management scheme for program stack data with the objective of processor power  reduction is presented.  Basic  technique  does  not  need the SPM size at compile time, does not mandate any hardware changes, does not need profile information, and seamlessly integrates support for recursive functions. Stack frames are managed using a software SPM manager, integrated into the application binary, and shows average energy savings of 32% along with a performance improvement of 13%, on benchmarks from MiBench. SPM management  can  be further optimized and made pointer-safe, by knowing the SPM size.

Read the full paper: “A Software-Only Solution to Use Scratch Pads for Stack Data,” by Aviral Shrivastava, Arun Kannan, and Jongeun Lee*, published in IEEE Transactions on CAD, vol. 28, no. 11, pp. 1719-1727, November 2009.

Categories: Multicore, Publications Tags: , , , ,

Have you figured out how this WordPress works?

August 20th, 2010 No comments

Honestly i’m a little confused. So I’m trying things out. My questions:

  • What is Category. Is it really different from tag?
  • Is there category view, which is different from menu view.
  • Is there any way to post static html page directly (not through a link)
Categories: Uncategorized Tags:

WordPress Installed!

August 19th, 2010 Comments off

Done it at last.

Contributors: Youngmoon Um (right) and Mooyoung Lee (left), both are majoring in ECE at UNIST.

Categories: Uncategorized Tags:

Jongeun Lee

August 10th, 2010 No comments

Jongeun Lee

Jongeun Lee joined Ulsan National Institute of Science and Technology (UNIST) in August of 2009 and is Associate Professor of Electrical and Computer Engineering. Dr. Lee received his B.S. (1997) and M.S. (1999) in Electrical Engineering, and his Ph.D. (2004) in Electrical Engineering and Computer Science all from Seoul National University.

Prior to joining UNIST, Dr. Lee was a Senior Researcher at Samsung Electronics SoC Research Center (2004.1-2007.10) and a Postdoctoral Research Associate at the Arizona State University (2007.11-2009.8). Dr. Lee is a recipient of Postdoctoral Research Fellowship from KRF (Korea Research Foundation) in 2007.

Dr. Lee has published more than 70 papers in refereed journals and conferences as well as a book chapter and several patents. His research interest includes deep learning processors, reconfigurable processor, and compilation for low power, reliability, and multi-core processors.

Categories: People Tags:

U-SURF students

July 5th, 2010 No comments

Two U-SURF students visit the HPC lab at UNIST for internship. During the four weeks period, students will be participating in graduate research projects, while staying in the dormitory with other U-SURF students. There are other activities including a one-day MT provided to all U-SURF participants.

Categories: News Tags:

NRF proposal accepted

May 15th, 2010 No comments

Good news. Our NRF proposal on dynamic compilation for low-power computing is accepted. This is a three-year project focusing on research (as opposed to development).

Categories: News Tags:

Papers accepted for LCTES ’10

April 4th, 2010 Comments off

Congratulations. We have two papers accepted for this year’s ACM SIGPLAN/SIGBED Conference on Languages, Compilers and Tools for Embedded Systems (LCTES) 2010. One is on Coarse-Grained Reconfigurable Processor, and the other is on Cache Vulnerability.

Categories: News Tags:

Paper accepted for HiPEAC ’10

January 5th, 2010 Comments off
One paper accepted for the 5th International Conference on High Performance and Embedded Architectures and Compilers (HiPEAC 2010), titled “Memory-aware Application Mapping on Coarse-grained Reconfigurable Arrays”. Congrats to authors: Y. Kim, J. Lee, A. Shrivastava, J. Yoon, and Y. Paek.
Categories: News Tags: