Welcome to my University of Chicago page. I am a 1st year PhD student in Computer Science. My advisor is Prof. Ian Foster.

I got my undergraduate degree in Electronics and Communications Engineering from Ateneo de Manila University. Most of my work revolved around designing networks and distributed systems infrastructures for environment and health applications. My old page can be found in http://ohm.ecce.admu.edu.ph/~aespinosa.

Research

As today's supercomputers break the petaflop barrier, we are faced with problems on how to manage hundreds of thousands of processors trying to access shared datasets. I am currently developing a collective I/O mechanism 1 for these petascale machines to improve data throughput when faced with many-tasks computation.

Project Involvements

Swift

Swift is a system for the rapid and reliable specification, execution, and management of large-scale science and engineering workflows. It supports applications that execute many tasks coupled by disk-resident datasets - as is common, for example, when analyzing large quantities of data or performing parameter studies or ensemble simulations.

I am trying to create an underlying collective IO mechanism for petascale and grid environments for this workflow system. My other tasks include developing and supporting domain science applications such as BLAST and other internally-developed scientific programs

Publications and Conference Presentations

  1. Z. Zhang, A. Espinosa, K. Iskra, I. Raicu, I. Foster and M. Wilde, Design and evaluation of a collective I/O model for loosely-coupled petascale programming, presented at the IEEE Workshop on Many-Task Computing on Grids and Supercomputers, Austin, TX, Nov. 2008.

Contact Information:

Office
Ryerson 178, University of Chicago
1100 East 58th Street
Chicago, IL 60637
Web
Blog: http://allan.88-mph.net/blog
Email: aespinosa[at]cs[dot]uchicago[dot]edu
Curriculum Vitae: cv.pdf