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. Florin Isaila, Francisco Javier Garcia Blas, Jesus Carretero, Wei-keng Liao, and Alok Choudhary. A Scalable Message Passing Interface Implementation of an Ad-Hoc Parallel I/O System. International Journal of High Performance Computing Applications first published on October 5, 2009 as doi:10.1177/1094342009347890
2. Kui Gao, Wei-keng Liao, Arifa Nisar, Alok Choudhary, Robert Ross, and Robert Latham. Using Subfiling to Improve Programming Flexibility and Performance of Parallel Shared-file I/O. In the Proceedings of the International Conference on Parallel Processing, Vienna, Austria, September 2009.
3. Kui Gao, Wei-keng Liao, Alok Choudhary, Robert Ross, and Robert Latham. Combining I/O Operations for Multiple Array Variables in Parallel NetCDF. In the Proceedings of the Workshop on Interfaces and Architectures for Scientific Data Storage, held in conjunction with the IEEE Cluster Conference, New Orleans, Louisiana, September 2009.

Software packages

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