Research Interests

• Parallel and distributed file I/O and storage system design
• Data management for large-scale scientific applications
• Computational model design for large-scale applications on parallel and distributed environment
• Data mining algorithm design and their parallelization

Research

• Major Research Projects
  • January 2004 ---
    Design, Development and Evaluation of High Performance Data Mining Systems

  • July 2002 ---
    Scalable implementation for overlapping file access in MPI-IO

  • July 2001 ---
    Enabling High Performance Application I/O for Scientific Data Management

  • August 1999 --- August 2002
    High-Performance Data Management, Access, and Storage Techniques for Tera-scale Scientific Applications

  • Jan. 1997 --- May 1999
    Design, Implementation and Evaluation of Parallel Pipelined Space-Time Adaptive Processing on Parallel Computers

• The Center for Ultra-scale Computing and Information Security (CUCIS)

Recent Publications:

1. Avery Ching, Kenin Coloma, Jianwei Li, Wei-keng Liao, and Alok Choudhary. High-Performance Techniques for Parallel I/O. Chapter 35 in the Handbook of Parallel Computing: Models, Algorithms, and Applications , Chapman & Hall/CRC Computer & Information Science Series, Volume: 17, December 2007
2. Jianwei Li, Wei-keng Liao, Alok Choudhary, and Ying Liu. Parallel Data Mining Algorithms for Association Rules and Clustering. Chapter 32 in the Handbook of Parallel Computing: Models, Algorithms, and Applications , Chapman & Hall/CRC Computer & Information Science Series, Volume: 17, December 2007
3. Wei-keng Liao, Avery Ching, Kenin Coloma, Arifa Nisar, Alok Choudhary, Jackie Chen, Ramanan Sankaran, and Scott Klasky. Using MPI File Caching to Improve Parallel Write Performance for Large-Scale Scientific Applications. In the Proceedings of the ACM/IEEE Conference on Supercomputing , November 2007.
4. Avery Ching, Robert Ross, Wei-keng Liao, Lee Ward, and Alok Choudhary. Noncontiguous Locking Techniques for Parallel File Systems. In the Proceedings of the ACM/IEEE Conference on Supercomputing , November 2007.
5. Wei-keng Liao, Kenin Coloma, Alok Choudhary, and Lee Ward. Cooperative Client-side File Caching for MPI Applications. In the International Journal of High Performance Computing Applications , Volume 21, Number 2, pp. 144-154, May 2007.
6. Wei-keng Liao, Avery Ching, Kenin Coloma, Alok Choudhary, and Lee Ward. An Implementation and Evaluation of Client-side File Caching for MPI-IO. In the Proceedings of the 21st International Parallel and Distributed Processing Symposium, Long Beach, California, March 2007.
7. Wei-keng Liao, Avery Ching, Kenin Coloma, Alok Choudhary, and Mahmut Kandemir. Improving MPI Independent Write Performance Using A Two-Stage Write-Behind Buffering Method. In the Proceedings of the Next Generation Software Workshop, held in conjunction with the 21st International Parallel and Distributed Processing Symposium, Long Beach, California, March 2007.

Software packages

• Parallel implementations for K-means data clustering algorithm -- including MPI, OpenMP, serial versions.