Recent Publications of J. (Ram) Ramanujam

Research supported by

NSF CPA (CISE-CCF) grant 0541409
NSF CSR (CISE-CNS) grant 0509442
NSF NER grant 0508245
NSF (CISE-CNS) grant 0601411
Environmental Protection Agency (EPA) grant
NSF ITR grant 0121706
NSF grant 0103933 (CISE) with LSU ECE match and LSU CAPITAL match
NSF grant 0073800 (CISE)
NSF Young Investigator Award 9457768 (CISE) with a match from Portland Group Inc.

2008
2007
2006
2005
2004
2003
2002

Copyrights to the many of the following papers are held by the publishers. It is understood that all persons copying this information will adhere to the terms and constraints invoked by each author's copyright. These works may not be reposted without the explicit permission of the copyright holder.

2008

U. Bondhugula, A. Hartono, J. Ramanujam, and P. Sadayappan, "PLUTO: A Practical and Fully Automatic Polyhedral Program Optimization System," Proc. ACM SIGPLAN 2008 Conference on Programming Language Design and Implementation (PLDI 08), Tucson, June 2008. [pdf] [Extended version]

M. Baskaran, U. Bondhugula, S. Krishnamoorthy, J. Ramanujam, A. Rountev, and P. Sadayappan, "A Compiler Framework for Optimization of Affine Loop Nests for General Purpose Computations on GPUs," in Proc. 22nd ACM International Conference on Supercomputing, Island of Kos, Greece, June 2008. [pdf] [Extended version]

U. Bondhugula, M. Baskaran, S. Krishnamoorthy, J. Ramanujam, A. Rountev, and P. Sadayappan, "Automatic Transformations for Communication-Minimized Parallelization and Locality Optimization in the Polyhedral Model," in Proc. CC 2008 - International Conference on Compiler Construction, Budapest, Hungary, March-April 2008. [pdf] [Extended version]

M. Baskaran, U. Bondhugula, S. Krishnamoorthy, J. Ramanujam, A. Rountev and P. Sadayappan, "Automatic Data Movement and Computation Mapping for Multi-level Parallel Architectures with Explicitly Managed Memories," in Proc. 13th ACM SIGPLAN Symposium on Principles and Practice of Parallel Programming, (PPoPP 2008), Salt Lake City, UT, February 2008. [pdf] [Extended version]

U. Bondhugula, M. Baskaran, A. Hartono, S. Krishnamoorthy, J. Ramanujam, A. Rountev, and P. Sadayappan, "Towards Effective Automatic Parallelization for Multicore Systems," in Proc. Workshop on Next Generation Software (NGS 2008), held in conjunction with the 22nd IEEE International Parallel and Distributed Processing Symposium (IPDPS 2008), Miami, FL, April 2008. [pdf]

2007

E. Ayguade, G. Baumgartner, J. Ramanujam, and P. Sadayappan (editors), Languages and Compilers for Parallel Computing, Springer-Verlag, 2007.

X. Gao, S. Krishnamoorthy, S. Sahoo, C. Lam, G. Baumgartner, J. Ramanujam, and P. Sadayappan, "Efficient Search-Space Pruning for Integrated Fusion and Tiling Transformations," Concurrency and Computation: Practice and Experience, 2007. [pdf]

S. Krishnamoorthy, M. Baskaran, U. Bondhugula, J. Ramanujam, A. Rountev and P. Sadayappan, "Effective Automatic Parallelization of Stencil Computations," in Proc. ACM SIGPLAN 2007 Conference on Programming Language Design and Implementation (PLDI 07), San Diego, June 2007. [pdf]

U. Bondhugula, J. Ramanujam, and P. Sadayappan, "Automatic Mapping of Nested Loops to FPGAs," in Proc. ACM SIGPLAN 2007 Symposium on Principles and Practice of Parallel Programming (PPoPP 07), San Jose, CA, March 2007. [pdf]

U. Bondhugula, J. Ramanujam, and P. Sadayappan. PLUTO: A Practical and Fully Automatic Polyhedral Program Optimization Systems. Technical Report OSU-CISRC-11/07-TR70, Department of Computer Science and Engineering, Ohio State University, November 2007. [pdf]

U. Bondhugula, M. Baskaran, S. Krishnamoorthy, J. Ramanujam, A. Rountev, and P. Sadayappan. Affine Transformations for Communication Minimal Parallelization and Locality Optimization of Arbitrarily Nested Loop Sequences. Technical Report OSU-CISRC-5/07-TR43, Department of Computer Science and Engineering, Ohio State University, May 2007. [pdf]

S. Pinnepalli, Jinpyo Hong, and J. Ramanujam and Doris Carver, "Code Size Optimization for Embedded Processors using Commutative Transformations," in Proc. The 13th IEEE International Conference on Embedded and Real-Time Computing Systems and Applications (RTCSA-07), Daegu, Korea, August 2007.

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Jinpyo Hong and J. Ramanujam, "Memory Offset Assignment for DSPs," in Proc. 2007 International Conference on Embedded Systems and Software (ICESS-07), Daegu, Korea, May 2007.

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Hassan Salamy and J. Ramanujam, "An Effective Heuristic for Simple Offset Assignment with Variable Coalescing," Languages and Compilers for Parallel Computing, (C. Cascaval et al. Eds.), Lecture Notes in Computer Science, Springer-Verlag, 2007. [pdf]

2006

S. Krishnan, S. Krishnamoorthy, G. Baumgartner, C. Lam, J. Ramanujam, P. Sadayappan, and V. Choppella, "Efficient Synthesis of Out-of-Core Algorithms Using a Nonlinear Optimization Solver," Journal of Parallel and Distributed Computing, vol. 66, no. 5, pp. 659-673, May 2006. [pdf]

G. Chen, M. Kandemir, M. J. Irwin, and J. Ramanujam, "Reducing code size through address register assignment," ACM Transactions on Embedded Computing (TECS), vol. 5, no. 1, pp. 225-258, February 2006. [pdf]

M. Kandemir, J. Ramanujam, and U. Sezer, "Improving the Energy Behavior of Block Buffering Using Compiler Optimizations," ACM Transactions on Design Automation of Electronic Systems, vol. 11, no. 1, pp. 228-250, January 2006. [pdf]

J. Ramanujam, J. Hong, M. Kandemir, A. Narayan, and A. Agarwal, "Estimating and Reducing the Memory Requirements of Signal Processing Codes for Embedded Processor Systems," IEEE Transactions on Signal Processing, vol. 54, no. 1, pp. 286--294, January 2006. [pdf]

A. Auer, G. Baumgartner, D. Bernholdt, A. Bibireata, V. Choppella, D. Cociorva, X. Gao, R. Harrison, S. Krishnamoorthy, S. Krishnan, C. Lam, Q. Lu, M. Nooijen, R. Pitzer, J. Ramanujam, P. Sadayappan, and A. Sibiryakov, "Automatic Code Generation for Many-Body Electronic Structure Methods: The Tensor Contraction Engine," Molecular Physics, vol. 104, no. 2, pp. 211--228, January 2006. [pdf]

Atef Allam and J. Ramanujam, "Dynamic Memory Usage Optimization using ILP," Proc. 2nd International Computer Engineering Conference: Engineering the Information Society (ICENCO 2006), Cairo, Egypt, December 2006. [pdf]

Atef Allam and J. Ramanujam, "ILP and Iterative LP Solutions for Peak and Average Power Optimization in HLS," Proc. 2nd International Computer Engineering Conference: Engineering the Information Society (ICENCO 2006), Cairo, Egypt, December 2006. [pdf]

Atef Allam and J. Ramanujam, "Modified Force-Directed Scheduling for Peak and Average Power Optimization using Multiple Supply-Voltages," in Proc. International Conference on Integrated Circuit Design and Technology (ICICDT), Padova, Italy, May 2006. [pdf]

Atef Allam and J. Ramanujam, "Simultaneous Peak and Average Power Optimization in Synchronous Sequential Designs Using Retiming and Multiple Supply Voltages," in Proc. International Conference on Integrated Circuit Design and Technology (ICICDT), Padova, Italy, May 2006. [pdf]

A. Hartono, Q. Lu, X. Gao, S. Krishnamoorthy, M. Nooijen, G. Baumgartner, D. Bernholdt, R. Pitzer, J. Ramanujam, A. Rountev, and P. Sadayappan, "Identifying Cost-Effective Common Subexpressions to Reduce Operation Count in Tensor Contraction Evaluations," in Proc. International Conference on Computational Science 2006 (ICCS 2006), Reading, UK, Lecture Notes in Computer Science, Springer-Verlag, 2006. [pdf]

A. Allam, J. Ramanujam, G. Baumgartner, and P. Sadayappan, "Memory Minimization for Tensor Contractions using Integer Linear Programming," Proc. Workshop on Performance Optimization for High-Level Languages and Libraries (POHLL-06), held in conjunction with the 20th IEEE International Parallel & Distributed Processing Symposium (IPDPS 2006), Rhodes, Greece, April 2006. [pdf]

X. Gao, S. Krishnamoorthy, S. Sahoo, C. Lam, G. Baumgartner, J. Ramanujam, and P. Sadayappan, "Efficient Search-Space Pruning for Integrate d Fusion and Tiling Transformations," in Languages and Compilers for Parallel Computing, (E. Ayguade et al. Eds.), Lecture Notes in Computer Science, Springer-Verlag, 2006. [pdf]

X. Gao, S. Krishnamoorthy, Q. Lu, V. Choppella, G. Baumgartner, J. Ramanujam, and P. Sadayappan, "Search-Based Performance-Mod el Driven Optimization for Compilation of Tensor Contraction Expressions," in Proc. 12th Workshop on Compilers for Parallel Computers (CPC 2006), A Coruna , Spain, January 2006.

2005

G. Baumgartner, A. Auer, D. Bernholdt, A. Bibireata, V. Choppella, D. Cociorva, X. Gao, R. Harrison, S. Hirata, S. Krishnamoorthy, S. Krishnan, C. Lam, Q. Lu, M. Nooijen, R. Pitzer, J. Ramanujam, P. Sadayappan, and A. Sibiryakov, "Synthesis of High-Performance Parallel Programs for a Class of ab initio Quantum Chemistry Models," Proceedings of the IEEE, vol. 93, no. 2, pp. 276-292, February 2005. [pdf]

X. Gao, S. Sahoo, Q. Lu, G. Baumgartner, C. Lam, J. Ramanujam, and P. Sadayappan, "Performance Modeling and Optimization of Parallel Out-of-Core Tensor Contractions," in Proc. ACM SIGPLAN 2005 Symposium on Principles and Practice of Parallel Programming, Chicago, IL, June 2005. [pdf]

A. Hartono, A. Sibiryakov, M. Nooijen, G. Baumgartner, D.E. Bernholdt, S. Hirata, C. Lam, R. Pitzer, J. Ramanujam, and P. Sadayappan, "Automated Operation Minimization of Tensor Contraction Expressions in Electronic Structure Calculations," in Proc. International Conference on Computational Science 2005 (ICCS 2005), Atlanta, GA, May 2005. [pdf]

Q. Lu, X. Gao, S. Krishnamoorthy, G. Baumgartner, J. Ramanujam, and P. Sadayappan, "Empirical Performance-Model Driven Data Layout Optimization," Languages and Compilers for Parallel Computing, (R. Eigenmann et al. Eds.), Lecture Notes in Computer Science, Springer-Verlag, 2005. [pdf]

2004

L. Benini, M. Kandemir, and J. Ramanujam (editors), Compilers and Operating Systems for Low Power, Kluwer Academic Publishers, Boston, MA, January 2004. ISBN: 1-4020-7573-1.

M. Kandemir, I. Kadayif, A. Choudhary, J. Ramanujam, and I. Kolcu, "Compiler-directed scratch pad memory optimization for embedded multiprocessors," IEEE Transactions on VLSI (TVLSI), vol. 12, no. 3, pp. 281-287, March 2004. [pdf]

M. Kandemir, J. Ramanujam, M. Irwin, V. Narayanan, I. Kadayif, and A. Parikh, "A Compiler Based Approach for Dynamically Managing Scratch-Pad Memories in Embedded Systems," IEEE Transactions on Computer-Aided Design, vol. 23, no. 2, pp. 243-260, February 2004. [pdf]

G. Baumgartner, D. Bernholdt, V. Choppella, J. Ramanujam, and P. Sadayappan, "A High-Level Approach to Synthesis of High-Performance Codes for Quantum Chemistry: The Tensor Contraction Engine," in Proc. 11th Workshop on Compilers for Parallel Computers (CPC 2004), Chiemsee, Germany, July 2004.

Efficient Synthesis of Out-of-core Algorithms Using a Nonlinear Optimization Solver, Sandhya Krishnan, Sriram Krishnamoorthy, Gerald Baumgartner, Chi-Chung Lam, J. Ramanujam, and P. Sadayappan. In Proceedings of the 18th International Parallel and Distributed Processing Symposium (2004 IPDPS Conference), Santa Fe, April 2004. (Best Paper Award) [pdf]

Memory-Constrained Data Locality Optimization for Tensor Contractions, Alina Bibireata, Sandhya Krishnan, Gerald Baumgartner, Daniel Cociorva, Chi-Chung Lam, P. Sadayappan, J. Ramanujam, David E. Bernholdt, and Venkatesh Choppella, Languages and Compilers for Parallel Computing, L. Rauschwerger et al. (Eds.), Springer-Verlag, 2004. [pdf]

2003

Chua-Huang Huang and J. Ramanujam (editors), Proceedings of The 2003 International Conference on Parallel Processing Workshops. IEEE Computer Society Press, October 2003. ISBN: 9780769520186. Available at Amazon Barnes&Noble ISBN (10-digit): 0769520189.

Reducing false sharing and improving spatial locality in a unified compilation framework, by M. Kandemir, A. Choudhary, J. Ramanujam, and P. Banerjee. IEEE Transactions on Parallel and Distributed Systems, 14(4):337-354, April 2003. [pdf]

Data Locality Optimization for Synthesis of Efficient Out-of-Core Algorithms Sandhya Krishnan, Sriram Krishnamoorthy, Gerald Baumgartner, Daniel Cociorva, Chi-Chung Lam, P. Sadayappan, J. Ramanujam, David E. Bernholdt, and Venkatesh Choppella. In Proceedings of the International Conference on High-Performance Computing (HiPC '03), Hyderabad, India, December 2003, Springer Verlag, Lecture Nodes in Computer Science. (Best Paper Award)

Global Communication Optimization for Tensor Contraction Expressions under Memory Constraints D. Cociorva, X. Gao, S. Krishnan, G. Baumgartner, C. Lam, P. Sadayappan, J. Ramanujam. In Proceedings of the International Parallel and Distributed Processing Symposium, Nice, France, April, 2003.

2002

An I/O conscious tiling strategy for disk-resident data sets, by M. Kandemir, A. Choudhary, and J. Ramanujam. The Journal of Supercomputing, 21(3):257-284, 2002. [pdf]

A High-Level Approach to Synthesis of High-Performance Codes for Quantum Chemistry G. Baumgartner, D.E. Bernholdt, D. Cociorva, R. Harrison, S. Hirata, C. Lam, M. Nooijen, R. Pitzer, J. Ramanujam, P. Sadayappan. In Proceedings of Supercomputing 2002, Baltimore, Maryland, November 2002.

Memory-Constrained Communication Minimization for a Class of Array Computations D. Cociorva, G. Baumgartner, C. Lam, P. Sadayappan, J. Ramanujam. In Proceedings of the 15th International Workshop on Languages and Compilers for Parallel Computing (LCPC '02), College Park, Maryland, July 2002. [pdf]

Automatic Synthesis of High-Performance Codes for Quantum Chemistry Applications G. Baumgartner, D.E. Bernholdt, D. Cociorva, R. Harrison, C. Lam, M. Nooijen, J. Ramanujam, P. Sadayappan. In Proceedings of the Workshop on Performance Optimization for High-Level Languages and Libraries (POHLL-02), New York, New York, June 2002.

Space-Time Trade-Off Optimization for a Class of Electronic Structure Calculations D. Cociorva, G. Baumgartner, C. Lam, P. Sadayappan, J. Ramanujam, M. Nooijen, D.E. Bernholdt, R. Harrison. In Proceedings of the ACM SIGPLAN 2002 Conference on Programming Language Design and Implementation (PLDI '02), Berlin, Germany, June 2002, pp. 177-186.

A Performance Optimization Framework for Compilation of Tensor Contraction Expressions into Parallel Programs. G. Baumgartner, D.E. Bernholdt, D. Cociorva, R. Harrison, C. Lam, M. Nooijen, J. Ramanujam, P. Sadayappan. In Proceedings of the 7th International Workshop on High-Level Parallel Programming Models and Supportive Environments (HIPS '02), Fort Lauderdale, Florida, April 2002.

Address code and arithmetic optimizations for embedded systems, by J. Ramanujam, S. Deshpande, J. Hong, and M. Kandemir. In Proc. VLSI Design/ASPDAC 2002 Bangalore, India, January 2002. [pdf]

J. Ramanujam, S. Krishnamoorthy, J. Hong, and M. Kandemir. A heuristic for clock selection in high-level synthesis, by In Proc. VLSI Design/ASPDAC 2002 Bangalore, India, January 2002. [pdf]

Strategies for improving data locality in embedded applications, by N. Crosbie, M. Kandemir, I. Kolcu, J. Ramanujam, A. Choudhary. In Proc. VLSI Design/ASPDAC 2002 Bangalore, India, January 2002. [pdf]

Automatic Data Distribution, by J. Ramanujam. In The Compiler Design Handbook: Optimizations and Machine Code Generation, (Y. N. Srikant and P. Shankar: Eds.), Chapter 12, pages 409-459, CRC Press, Boca Raton, FL, 2002.

Integer lattice based methods for local address generation for block-cyclic distributions, by J. Ramanujam. In Compiler Optimizations for Scalable Parallel Systems - Languages, Compilation Techniques, and Run Time Systems, S. Pande and D. P. Agrawal (Eds.), Lecture Notes in Computer Science, Volume 1808, pages 597-645, Springer-Verlag, 2001. [pdf]

J. Ramanujam
Ritter Distinguished Professor
Department of Electrical and Computer Engineering
and Center for Computation and Technology
Louisiana State University
Baton Rouge, LA 70803-5901, USA

Phone: +1 (225) 578-5628
Office: +1 (225) 578-5241
Fax: +1 (225) 578-5200
E-mail: j x r {@} ece.lsu.edu