P. (Saday) Sadayappan Professor Department of Computer Science and Engineering 595 Dreese Lab, 2015 Neil Avenue Ohio State University, Columbus, Ohio 43210 USA Email:sadayappan.1_at_osu.edu +1-614-292-0053 (office), +1-614-292-2911 (fax)

Teaching

• CSE621 (Introducton to High-Performance Computing)
• CSE 721 (Parallel Computing)
• CSE 778 (Introduction to Computer Aided Design of VLSI)

Research Interests

• Compiler Optimization for High Performance Computing
• Runtime Systems for Scalable Parallel Computing

Software

Current Projects

Selected Recent Publications (more complete list)

• M. Baskaran, A. Hartono, S. Tavarageri, T. Henretty, J. Ramanujam, and P. Sadayappan, "Parameterized Tiling Revisited," International Symposium on Code Generation and Optimization (CGO), Apr 2010.
  
• M. Baskaran, J. Ramanujam, and P. Sadayappan, "Automatic C-to-CUDA Code Generation for Affine Programs ," International Conference on Compiler Construction (CC), March 2010.
  
• J. Dinan, D. B. Larkins, P. Sadayappan, S. Krishnamoorthy, J. Nieplocha, "Scalable work stealing," Proc. Supercomputing (SC), Nov. 2009.
  
• J. Lin, Q. Lu, X. Ding, Z. Zhang, X. Zhang, and P. Sadayappan, "Enabling software management for multicore caches with a lightweight hardware support," Proc. Supercomputing (SC), Nov. 2009.
  
• Q. Lu, J. Lin, X. Ding, Z. Zhang, X. Zhang, and P. Sadayappan, "Soft-OLP: Improving Hardware Cache Performance through Software-Controlled Object-Level Partitioning," Proc. Intl. Conf. on Parallel Architectures and Compilation Techniques (PACT), 2009.
  
• Q. Lu, C. Alias, U. Bondhugula, T. Henretty, S. Krishnamoorthy, J. Ramanujam, A. Rountev, P. Sadayappan, Y. Chen, H. Lin, T. Ngai, "Data Layout Transformation for Enhancing Data Locality on NUCA Chip Multiprocessors," Proc. Intl. Conf. on Parallel Architectures and Compilation Techniques (PACT), 2009.
  
• A. Hartono, M. Baskaran, C. Bastoul, A. Cohen, S. Krishnamoorthy, B. Norris, J. Ramanujam, and P. Sadayappan, "Parametric multi-level tiling of imperfectly nested loops,'' ACM International Conference on Supercomputing (ICS), 2009.
  
• A. Hartono, Q. Lu, T. Henretty, S. Krishnamoorthy, H. Zhang, G. Baumgartner, D. E. Bernholdt, M. Nooijen, R. Pitzer, J. Ramanujam, and P. Sadayappan, "Performance Optimization of Tensor Contraction Expressions for Many-Body Methods in Quantum Chemistry," The Journal of Physical Chemistry A Vol. 113 (45), pp. 12715-12723, 2009.
  
• M. Baskaran, U. Bondhugula, J. Ramanujam, A. Rountev, and P. Sadayappan, "A compiler framework for optimization of affine loop nests for GPGPUs," ACM International Conference on Supercomputing (ICS), June 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), June 2008.
  
• 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, March-April 2008.
  
• 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),, February 2008.
  
• 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), June 2007.
  
• 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),, March 2007.
  
• 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.
  
• 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, June 2005. 
  
• S. Krishnan, S. Krishnamoorthy, G. Baumgartner, C.-C. Lam, J. Ramanujam, and P. Sadayappan, "Efficient Synthesis of Out-of-core Algorithms Using a Nonlinear Optimization Solver," In Proceedings of the 18th International Parallel and Distributed Processing Symposium (2004 IPDPS Conference), April 2004. (Best Paper Award)  
  
• S. Krishnan, S. Krishnamoorthy, G. Baumgartner, D. Cociorva, C.-C. Lam, P. Sadayappan, J. Ramanujam, D. E. Bernholdt, and V. Choppella, "Data Locality Optimization for Synthesis of Efficient Out-of-Core Algorithms," In Proceedings of the International Conference on High-Performance Computing (HiPC '03), December 2003, (Best Paper Award) 
  
• D. Cociorva, G. Baumgartner, C. Lam, P. Sadayappan, J. Ramanujam, M. Nooijen, D.E. Bernholdt, R. Harrison, "Space-Time Trade-Off Optimization for a Class of Electronic Structure Calculations," In Proceedings of the ACM SIGPLAN 2002 Conference on Programming Language Design and Implementation (PLDI '02), June 2002, pp. 177-186.