Last updated on May 24 2006

About myself...

I was born on the 10th Semptember, 1973 in Cassino (FR). I graduated (cum laude) in Computer Engineering at University of Pisa on October 2000 with a graduation thesis developed at the Information Engineering Department of the University of Pisa on the development of a packet Fair Queueing algorithm for the FreeBSD kernel.
I worked at the at the Information Engineering Department of the University of Pisa as a PhD student from 2001 to the end of 2004. I received my PhD on May 2005, with a thesis on scheduling algorithms for QoS provisioning.

My research activity is mainly focused on CPU, network and disk scheduling algorithms for QoS provisioning. Especially, I am recently working on Multiprocessor scheduling.

Publications

(and related news)

• P. Valente, “Exact GPS simulation with logarithmic complexity, and its application to an optimally fair scheduler”, Proceedings of SIGCOMM’04, August 2004.
  
  Some bugs have been fixed in the (pseudo-)code of both L-GPS and L-WF2Q. The most important ones have been found and fixed by Ming-I Hsieh. I did not have the time to prepare a well documented version of the correct code, but you can mail me to get a draft.
  
  
  
• L. Rizzo, P. Valente, “Hybrid: achieving deterministic fairness and high throughput in disk scheduling”, Proceedings of CCCT’04, August 2004.
  
  Hybrid is currently being implemented by Luigi Rizzo and Emiliano Mennucci in the project "Pluggable disk scheduler for FreeBSD", which has been selected for funding from the Google "Summer of  Code" program :-)
  I' working on an imporved version of the paper,please mail me to get a draft of it.
  
  
  
• P. Valente, "Extending WF2Q+ to support a dynamic traffic mix", Proceedings of AAA-IDEA'05, June 2005.
  
  You can find an implementation of Time-driven Removal (TdR) -- the simple extension for WF2Q+ defined in the paper -- inside the code of Hybrid, currently being developed in the above mentioned "Pluggable disk scheduler for FreeBSD" project.
  
  
  
• Luigi Palopoli, Tommaso Cucinotta, Luca Marzario, Antonio Mancina, Paolo Valente, "A unified framework for managing different resources with QoS guarantees", Proceedings of OSPERT'05, July 2005.
  
  
  
• Paolo Valente, Giuseppe Lipari, "An Upper Bound to the Lateness of Soft Real-time Tasks Scheduled by EDF on Multiprocessors", Proceedings of RTSS'05, December 2005.
  
  A bug has been found in one of the proofs (credits: UmaMaheswari C. Devi).
  
  We prepared a backup Technical Report, containing only a subset of the sane proofs of the published paper. The proofs used in this TR leads to a higher bound with respect to the published paper.
  
  We are aslo working on a new Technical Report containing a slightly different set of proofs, which should not be affected by that error. Contact me for details.
  
  Finally, you can click here to download an extended version of the original paper highlighting the point where the bug is.
  

Teaching

• Teaching assistant in the Programming Fundamentals I course, held in the Laurea in Ingegneria Informatica degree at the Faculty of Engineering, University of Pisa