Department of Computer Science at UH

University of Houston

Department of Computer Science

In Partial Fulfillment of the Requirements for the Degree of
Doctor of Philosophy

Kshitij V. Mehta

Will give a preliminary defense of his dissertation

Parallel I/O for High Performance Computing


I/O is a major time-limiting factor in high performance computing (HPC) applications. The combined effects of hard drive latency and bandwidth make I/O the slowest operation in a system. A lot of work has been done in the field of parallel I/O for scientific computing, specially for distributed memory machines. As shared memory systems gain popularity with the increasing number of cores in a node, implementing efficient parallel I/O for shared memory machines has become an important challenge. Currently, popular shared memory programming models like OpenMP do not provide a framework for implementing parallel I/O. This thesis aims to develop parallel I/O for the shared memory architecture. In particular, focus has been laid on implementing parallel I/O for OpenMP. In the process, the characteristics of shared memory machines and the behaviour of parallel file systems has been studied and an effort has been made to optimize parallel I/O. Also, this research attempts at modeling parallel I/O, which enables us to predict behaviour of parallel I/O on systems with different configurations.

Date: Wednesday, May 4, 2011
Time: 9:30 AM
Place: 550-PGH
Faculty, students, and the general public are invited.
Advisor: Dr. Edgar Gabriel