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Title: Toward the Integration of Incremental Physical Synthesis Optimizations
Speaker: Dr. Gi-Joon Nam, IBM Austin Research Lab
Time: 1:20-2:10 pm, April 27, 2009 (Monday)
Place: MD-231, NTUEE (明達館 231室)
Abstract:
In high-frequency microprocessor design, placement plays a
significantly different role from that in large ASICs. Not only
does it have to find a good global placement solution, placement
needs tighter interaction with physical optimizations to improve
every picosecond possible. This paper will introduce practical
placement techniques that integrate buffering and gate sizing to
maximize timing improvement in a standard-cell library based
high-performance design flow. Combined with accurate timing models
and analysis, these incremental placement techniques
simultaneously consider multiple optimization options and make
timing-optimal changes under the given timing model. These
techniques are equipped with a “Do-no-harm” policy that makes
them applicable in incremental optimization frameworks to reform
critical subcircuits.
Biography:
Gi-Joon Nam received the B.S. degree in computer engineering from
Seoul National University, Seoul, Korea, and the M.S. and Ph.D
degrees in computer science and engineering from the University
of Michigan, Ann Arbor. Since 2001, he has been with the IBM
Austin Research Lab, Austin, Texas, where he is primarily working
on the physical design space, particularly placement & routing and
timing closure flow. His general interests include computer-aided
design algorithms, combinatorial optimization, VLSI system designs,
and computer architecture. Dr. Nam has been serving on the technical
program committee for various conferences including the International
Conference on Computer Aided Designs (ICCAD), the International
Symposium on Physical Design (ISPD), the Asia and South Pacific
Design Automation Conference (ASPDAC) etc, and is the general
chair of ISPD 2009. He is the recipient of 1st place award for the
38th Design Automation Conference Student Design Contest, numerous
IBM awards and SIGDA technical leadership award from ACM.
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