Net100 year 1 leftovers proposal:

1
Net100 year 1 leftovers (proposal)

• PSC
• none
• ORNL
• router access to SNMP data (besides edge routers)
• OC48 testing
• LBNL
• NWS interfacing -- mute?

2
Net100 year 2 proposal milestones

• PSC
• NAOS in multi-site dist. App. ?
• Instruments and enhancements
• standardization process
• other OSs
• remote access mechanism
• ORNL
• Net100 and HPSS protocols
• ECN tuning/testing
• other OSs
• include statistical sampling of netlets
• multipath routing

LBNL
- NTAF improvements - tool development - autotune
grid apps - impact of tuned apps - impact of
parallel streams - alternate protocol analysis -
NWS/NAB improvements ? - integrate with other
monitoring projects
3
Net100 year 2 -- needs

• Additional analysis of TCP tuning options
• selecting thresholds/values (AIMD, max_ssthresh,
  reorder)
• parallel tuning ( of streams, buffer size,
  wrappers, other tuning)
• using NTAF data to make tuning decisions
• NTAF tools for characterizing paths
• Determining of streams and size
• Distinguish type of loss? (wireless)
• Web100 tuning/tracing scalability study
• WAD/kernel tuning extensions
• del ACK, reordering, caching (initial window),
  burst mgt., initial scale factor, pacing options
• DRS ?
• Can loss be anticipated? ( ss tuning ? Vegas ?
  ?)
• useable tuning package and demonstrated results
• other OSs -- AIX ? BSD? Compaq? Irix? ?
• 10GigE/OC48/OC192 and wireless tuning
• interdependencies ? ORNL/PSC/LBNL

4
WAD extensions
Some Possible WAD algorithms (Mathis 11/27/01)
Notes Description DUP threshold
(out of order resiliance) intial receive
window/scale factor cwnd high limit D
ssthresh low limit d Set initial cwnd d Set
restart window (e.g. after a timeout) Set
initial ssthresh D AIMD constants (also virtual
MSS) d Force MTU down (pseudo pacing) K Spin
pacing KKn True pacing (open research question)
Explicit burst size limits KD Force MTU
up (and IP fragmentation) Force client
"from" address Force per connection
routing (pseudo redirects) Force per
connection source route option (LSRR) a Use
multiple connections a Negotiate application
copy buffer size Set socket "ready"
thresholds K Interrupt coalescing parameters
K ACK frequency/(long) delayed ack/delayed window
parameters d Nagle parameters K In situ path
diagnostics to run under any app (diagnostic
anti-tune) ddangerous to the net or other
applications Dvery dangerous to the net or
other applications (All may have adverse
affects to the local host or application)
KRequires non-trivial kernel support arequires
WAD to Application API (all other are WAD to
kernel) (all assume some kernel support)
nNot really a workaround (e.g. should be in TCP)
WAD tuning for grid? Wireless MSS
reduction expo backoff cancel other ?
5
ORNL year 2

• TCP tuning analysis (internet, ns, NISTnet)
• WAD/kernel extensions
• NTAF integration
• Other OS web100 ? (AIX BSD)
• Nagi
• Integration of neural network predictors with
  previous ones using projective fusers
• Analysis and testing of two- and three-stream
  TCP atou and net100 implementation
  
• Analysis of time-scales of measurements and
  statistical estimators for transport control
• Integration of statistical estimators into
  transport control loop at the appropriate
  time-scales

6
Net100 year 2 outreach

• Papers ?
• End of FY report
• Talks ?
• Web pages
• Interactions with other groups (e2e, Esnet,
  apps, MICS networking)