Picture of Andrew Hilton

Andrew D. Hilton

I finished my PhD at the University of Pennsylvania in summer of 2010, where I used to be a student in the Architecture and Compilers Group where I am advised by Amir Roth. I currently work at IBM in Research Triangle Park, North Carolina as part of the performance modelling and analysis team. Here is my (slightly out-of-date now) cv.

My primary research interest is in processor designs to provide high performance in an energy efficient way despite the relatively long latency of main memory. My work focuses on the use of speculative retirement—the ability to speculatively allow instructions to exit the pipeline when they would typically stall it. I have proposed two architectures, BOLT and iCFP which couple CFP-style re-execution of miss-dependent instructions with speculative retirement. My dissertation research will address the mechanisms for tracking speculatively retired loads and stores in such a context. In addition to my architecture research, I am currently collaborating with Jeff Vaughan on a security project called "Paladin: Helping Programs Help Themselves with System Call Interposition"

Dissertation:

Energy Efficient Latency Tolerance: Single-thread performance for the multi-core era. (slides)

Publications:

Flexible Register Management using Reference Counting Nominated for Best Paper
Steven Battle, Andrew Hilton, Mark Hempstead, and Amir Roth.
18th International Symposium on High-Performance Computer Architecture (HPCA), Feb. 2012
BOLT: Energy-Efficient Out-of-Order Latency-Tolerant Execution
Andrew Hilton and Amir Roth.
16th International Symposium on High-Performance Computer Architecture (HPCA), Jan., 2010
CPROB: Checkpoint Processing with Opportunistic Minimal Recovery (slides)
Andrew Hilton, Neeraj Eswaran, and Amir Roth.
18th International Conference on Parallel Architectures and Compilation Techniques (PACT), Sep., 2009.
FIESTA: A Sample-Balanced Multi-Program Workload Methodology (slides)
Andrew Hilton, Neeraj Eswaran, and Amir Roth.
5th Workshop on Modeling, Benchmarking, and Simulation (MoBS), Jun., 2009.
Decoupled Store Completion/Silent Deterministic Replay: Enabling Scalable Data Memory for CPR/CFP Processors (slides)
Andrew Hilton and Amir Roth.
36th International Symposium on Computer Architecture (ISCA), Jun., 2009.
iCFP: Tolerating All-Level Cache Misses in In-Order Processors (slides) IEEE Micro's Top Picks 2010
Andrew Hilton, Santosh Nagarakatte and Amir Roth.
15th International Symposium on High-Performance Computer Architecture (HPCA), Feb., 2009.
Ginger: Control Independence Using Tag Rewriting (slides)
Andrew Hilton and Amir Roth.
34th International Symposium on Computer Architecture (ISCA), Jun. 9-13, 2007.
XChange: Coupling Parallel Applications in a dynamic environment
Hasan Abbasi, Matthew Wolf, Karsten Schwan, Greg Eisenhauer, and Andrew Hilton
6th International Conference on Cluster Computing, Sep. 20-23, 2004.

Teaching:

I was selected by the Center for Teaching and Learning as one of six recipients of their Graduate Fellowship for Teaching Excellence for 2008-09.

I taught the following classes:
Spring 2009: CS 173 (Introduction to Computer Science) at Ursinus College
Spring 2009: CS 274 (Computer Architecture and Organization) at Ursinus College
Spring 2008: CSE 399 (Special Topics: C++) at University of Pennsylvania
Spring 2007: CSE 399 (Special Topics: C++) at University of Pennsylvania

I TAed the following classes:
Spring 2006: TA for for Amir Roth's CSE371
Fall 2005: TA for Milo Martin's CIS501
Spring 2000-Spring 2003: TA for CS 1322 (Second intro to programming class, in Java) at Georgia Tech.

Other:

My WPE-II exam was on Hardware for Exploiting Data Level Parallelism in Spring 2006.
This exam involves reading 3-4 papers on a topic, providing a written analysis, and giving a roughly 45 minute talk.

Before coming to Penn, I was an undergraduate and then Masters student at Georgia Tech. My advisor there was Olin Shivers.

Contact Info:

Department of CIS
Levine Hall
3330 Walnut Street
Philadelphia, PA 19104-6389

Email: a d h i l t o n @ c i s . u p e n n. e d u