|
The Liberty Computer Architecture Research Group exploits unique
opportunities exposed by considering the interaction of compilers and
architectures to increase performance, to improve reliability, to
reduce cost, to lower power, and to shorten the time to market of
microprocessor systems. This objective is accomplished by providing
critical computer architecture and compiler research, expertise, and
prototypes to the community.
Projects
 | The Parallelization Project - Parallelism is
necessary to address growing problems in microprocessor design. The Parallelization
Project uses intelligent speculation, smart dynamic adaptation, and other novel techniques
to automatically extract scalable parallelism from programs never before parallelized.
|
 | The Fault Tolerance Project - As chip densities and clock
rates increase, processors are becoming more susceptible to error-inducing
transient faults. In contrast to existing techniques, we
advocate adaptive approaches that match the changing reliability and
performance demands of a system to improve reliability at lower cost. This
project introduced the concept of software-controlled fault
tolerance. |
 | The Compiler Foundations Project - Conventional
compiler organization and methodology places significant limitations on
aggressive optimizations, by excessively relying on unscalable and ineffective
intermediate representations and conservative analysis techniques. In contrast
to existing compiler systems, the Compiler Foundations project proposes novel
intermediate program structures designed specifically to perform whole-program,
unrestricted optimizations along with judicious use of predictive heuristics to
narrow down the space of profitable optimizations. Furthermore, this project
advocates a synergistic combination of conservative static analysis
techniques with lightweight profiling to enable aggressive speculative
optimizations. |
 | The Security Project - With the explosion
in the amount of sensitive data accessed by users, ensuring the
confidentiality of that data has become a critical problem in security.
This problem is exacerbated by applications which propagate the
sensitive data in unexpected, and often, malicious ways. The Security
Project introduces the concept of user-centric information flow
tracking that empowers users to control how applications propagate
their sensitive data. Furthermore, this project considers a new
methodology that treats security as a first-order requirement in
designing computer systems, alongside traditional
requirements such as programmability, usability, speed, and power/energy
efficiency.
|
News
March 30, 2013: The Liberty Team wins second place in the
hardware hacks category at HackPrinceton 2013 for Risk of Electrocution, a home power management system.
Congrats to Stephen Beard, David Dennis, Nick Johnson, Himanshu Shah, Matt Zoufaly, and mentor David August. April 26, 2012: Hanjun Kim is awarded an Intel Foundation PhD Fellowship! March 29, 2012: A hearty congratulations goes to Yun Zhang
for successfully defending her Ph.D. thesis. Good luck at
Goldman Sachs! February 21, 2012: Stephen Beard wins a School of Engineering and Applied Sciences Excellence in Teaching Award! December 6, 2011: A hearty congratulations goes to Arun Raman
for successfully defending his Ph.D. thesis. Good luck at
Intel! May 19, 2011: Prakash Prabhu is awarded the 2011 Google U.S./Canada Fellowship in Parallel
Programming! September 25, 2010: Our paper,
"DAFT: Decoupled Acyclic Fault
Tolerance," was selected as a Top
Paper by the International Conference on Parallel Architectures and Compilation
Techniques (PACT) Program Committee! Papers selected will appear in
a special issue of the International Journal of Parallel Programming
(IJPP).
April 23, 2010: Arun Raman is awarded an Intel Foundation PhD Fellowship! May 6, 2009: A hearty congratulations goes to Easwaran Raman
for successfully defending his Ph.D. thesis. Good luck at
Google! September 15, 2008: A hearty congratulations goes to Matthew
Bridges for successfully defending his Ph.D. thesis. Good luck at
Google! June 16, 2008: Easwaran Raman receives the Wu Prize for Excellence, awarded by
Princeton University's School of Engineering and Applied
Sciences for upper-year graduate students who have performed at the
highest level in courses, research, and teaching.
October 25, 2007: Our paper, "Revisiting
the Sequential Programming Model for Multi-Core," was selected
as one of IEEE Micro's Top Picks
from Computer Architecture Conferences! IEEE Micro's Top Picks issue
recognizes papers "most relevant to industry and significant in
contribution to the field of computer architecture" in 2007.
June 1, 2007: Guilherme Ottoni is awarded an Intel Foundation PhD Fellowship! May 17, 2007: Our paper, "
Fault-tolerant Typed Assembly Language," wins the Best Paper Award at The 2007 ACM SIGPLAN Conference on
Programming Language Design and Implementation (PLDI)! May 2, 2007: Guilherme Ottoni receives the Wu Prize for Excellence, awarded by
Princeton University's School of Engineering and Applied
Sciences for upper-year graduate students who have performed at the
highest level in courses, research, and teaching.
April 9, 2007: George Reis is awarded a
Harold W. Dodds Honorific Fellowship, awarded by the
Princeton University Graduate School to upper-year graduate students
to recognize outstanding performance and professional promise.
February 15, 2007: Our paper, "Automatic
Instruction-Level Software-Only Recovery Methods," was selected
as one of IEEE Micro's Top Picks
from Computer Architecture Conferences! IEEE Micro's Top Picks issue
recognizes papers "most relevant to industry and significant in
contribution to the field of computer architecture" in 2006.
July 10, 2006: After much deliberation, David Penry accepts the offer from Brigham Young University!
June 25, 2006: Jonathan Chang is awarded the prestigious William C. Carter Award at
the 2006 International
Conference on Dependable Systems and Networks for the paper
"Automatic Instruction-Level Software-Only Recovery Methods"
co-authored with George Reis and Professor David August! April 20, 2006: The Liberty Research Group wins a Microsoft Compiler Research Award for "A Viable Approach to Compiling Sequential Codes for CMPs".
July 11, 2005: A hearty congratulations goes to Spyridon
Triantafyllis for accepting an offer of employment from D. E. Shaw! June 1, 2005: Bolei Guo is awarded an Intel
Foundation Graduate Fellowship! March 23, 2005: Our paper, "SWIFT:
Software Implemented Fault Tolerance," wins the Best Paper Award at The Third International Symposium on Code
Generation and Optimization (CGO-3)! August 16, 2004: A hearty congratulations goes to Manish
Vachharajani for successfully defending his Ph.D. thesis. Good luck
at the University of Colorado,
Boulder! July 2, 2004: There will be a
half day tutorial for the Liberty Simulation
Environment at ASPLOS XI in
Boston Massachusetts on Sunday, October 10, 2004.
June 2, 2004: The Liberty Research Group will be holding a
two and half day tutorial for the Liberty
Simulation Environment. The tutorial, which will take place at
Princeton University, will run from Monday, June 7th to the
afternoon of Wednesday, June 9th.
May 1, 2004: Spyros Triantafyllis is awarded an Intel
Foundation Graduate Fellowship!
Also take a look at our older news.
|
