Report on IEPM PPDG efforts for PPDG for the quarter October
- December 2004
Report prepared by Les Cottrell, January, 2005
Collaboration with IEPM, Network Performance Monitoring
Bandwidth/Throughput measurement (IEPM-BW)
We submitted and had accepted an
extended abstract on
Transport Fairness Characterization and Evaluation -
comparison of variants of TCP and UDP based transport with respect
to transient and steady state traffic on real networks
for the Protocols for
Fast Long-Distance networks in Lyon.
Lightweight Bandwidth Estimation
We cleaned up the
ABwE web site
that describes the lightweight
avaliable bandwidth estimation toolkit, and put into production an
ABwE server at SLAC. The server is now installed at about 40 sites.
Bandwidth performance anomalous events
We completed implementation, tuning, and checking out of the modified
"plateau" algorithm. We built a library of interesting
events as well as a canonical data set of time series bandwidth
measurements from SLAC to 40 sites for 100 days. This will be used for
comparing the effectiveness of the Plateau versus other algorithms
such as Kolmogorov-Smirnov, Holt-Winters and Principal Component
Analysis. We also set up a collaboration between Loughborough University
(K-S), FNAL (H-W), NIIT/Pakistan (PCA) and SLAC (Plateau and leadership)
for implemnting and comparing the effectiveness/applicability of
the various algorithms against a common data set. We put tother a
draft paper describing this work.
Traceroute Analysis and Visualization
We worked with Florida International University and CalTech to install a PingER
monitoring site at FIU. This will be particularly used for monitoring sites
on the Americas Path Network
Working with an Institute in Bangalore, India we set up a PingER monitoring
site there. This will be valuable to see the performance of paths
from and within the developing world.
Hosted visit and talk by geographer
from UNE Armitage Australia, who has been
using the PingER data to detect a wave of congestion that moves around
the world with daytime. This was used very succesfully as a
SC2004 Bandwidth Challenge
We co-led (with CalTech) a collaboration with Caltech, FNAL, University of Manchester, England,
several companies (e.g. Chelsio, S2io, Sun), ESnet, National
Lambda Rail and others to participate in this
year's SC2004 Bandwidth Challenge. We secured the loan of over $400K of
routers/switches/servers/10GE NICs plus two 10Gbits/s links from
Sunnyvale to Pittsburgh, and space at the QWest and Level(3) colocation
facilities in Sunnyvale. We successfully defended our
Bandwidth Challenge for sustained throughput achieving over 100Gbits.
This was reported in the national news including Yahoo, CCNews, SlashDot as well as
For more details see the web site at
Proposals and Representation etc.
SLAC is a co-PI on the US Department of State
and the Pakistan Ministry of Science and Technology funded project
for Measurement and Analysis for the Global Grid and Internet End-to-end
performance (MAGGIE). We have regular fortnightly phone meetings We will
exchanging visits in the near future to forward the collaboration.
SLAC is a partner in the
TeraPaths: A QoS Enabled Collaborative Data Sharing Infrastructure
for Peta-scale Computing Research.
A two page summary of the new proposal can eb found at
SLAC is a partner in the UltraLight optical testbed
proposal (led by Caltech) which was funded
by the NSF. We attended the kick-off UltraLight meeting at CalTech in
The proposal with Texas A&M, NASA and others to NASA on developing and
monitoring IP based protocols for NASA satellites etc. was rejected.
Submitted paper with FNAL to CHEP04 on Wide Area Networking System for
HEP Experiments at FNAL.
We served on the Program Committees of the
Protocols for Fast Long Distance
Networks (PFLDnet 2005) workshop to be held in Lyon
in February 2005, and the
Passive and Active Measurements workshop
(PAM2005) in Boston in 2005. We reviewed about 20 papers and made