Gábor Rétvári, PhD — Senior Research Fellow, BME

Gábor Rétvári received the M.Sc. and Ph.D. degrees in electrical engineering from the Budapest University of Technology and Economics (BME), Budapest, Hungary, in 1999 and 2007, respectively. He is now a Senior Research Fellow at the Department of Telecommunications and Media Informatics, BME. His research interests include routing and switching in packet networks, cloud-native networking and the service mesh, switch and router design, cloud computing and software-defined networks, and all applications of theoretical computer science to real-world problems. He is a Perl hacker, maintaining numerous open source scientific tools written in Perl, C and Haskell.

Department of Telecommunications and Media Informatics
Budapest University of Technology and Economics
Budapest, Hungary
H-1117 Budapest, Magyar Tudósok krt. 2.
Phone: +36-1-463-2403


  • Two papers accepted to ACM CoNEXT'19, updates will follow soon.
  • Take a look at the The Internet Routing Entropy Monitor for 6 years of scalability statistics and historical trends from the Internet data plane.

Recent publications

See selected publications and a full publication list (also with abstracts).


  • Applied Optimization and Game Theory (Alkalmazott optimalizálás és játékelmélet), VITMD097, (Hungarian/English)
  • The Internet Ecosystem and Evolution (Az internet ökoszisztémája és evolúciója, Inf MSc Internet architektúra és szolgáltatások főspecializáció, VITMMA00V)


  • The Internet Routing Entropy Monitor - statistics, charts and downloadable forwarding tables samples from the Internet data plane collected daily from 20 vantage points.
  • Math::GLPK - Perl extension for the GNU Linear Programming Kit (GLPK).
  • Math::MatrixSparse - a pure Perl module implementing sparse matrices.
  • Lemon::Graph - Perl extension for LEMON, a combinatorial optimization and graph library.
  • XML::XDV - the XML Data Visualization framework.

Created: 2019-09-26 Thu 15:12