TACC Update DaedalusBARWAN Winter Retreat, January 1998

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TACC Update DaedalusBARWAN Winter Retreat, January 1998

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TACC Update/Armando Fox. Outline. TACC Review & Status ... TACC Update/Armando Fox. TACC Server Status 'Production' cluster running at UCB since 4/97 ... – PowerPoint PPT presentation

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Title: TACC Update DaedalusBARWAN Winter Retreat, January 1998

1
TACC UpdateDaedalus/BARWAN Winter
Retreat,January 1998

Armando Fox
fox_at_cs.berkeley.edu

2
Outline

TACC Review Status
New TACC Services and CS 294-6 Internal
Technology Transfer
Thin Clients Computing By Proxy
Publication/Ongoing Research Activities
Summary

3
Layered Model of Internet Services
httpd, etc.

TACC Layer
Programming model based on composable building
blocks
SNS Layer large virtual server
Implements SNS requirements
Cluster computing for hardware F/T and
incremental scaling

TACC
ScalableNetwork Svc

Exploit TACC model semantics for software F/T
SNS layer is reusable and isolated from TACC
Focus on application content
Applications get SNS behaviors for free

4
Whats TACC?

Transformation (one-to-one)
TranSend, Anonymizer
Aggregation (many-to-one)
Search engines, crawlers, my headlines
Caching
Both original and TACC-generated content
Mass Customization
Per user for content generation
Per device data delivery, content packaging

5
TACC Examples

HotBot search engine
Query crawlers DB
Cache recent searches
Customize UI/presentation
TranSend transformation proxy
On-the-fly lossy compression of inline images
(GIF, JPG, etc.)
Cache original transformed
User specifies aggressiveness, refinement UI,
etc.

A
DB
T
html

6
TACC Conceptual Data Flow
To Internet
FE
User request

Front end accepts RPC-like user requests
Original data fetched from cache or Internet
Users customization profile retrieved
Aggregators/transformers operate on data
according to customization profile

7
Logical TACC Server Architecture

Component replication for scaling and FT
NOW with scalable interconnect
Incremental scaling commodity building blocks

C
FE

FE
W
W
W
A
W
W
W
T
FE
GUI
LB/FT
8
TACC Contributions

TACC programming model
Transformation, Aggregation, Caching,
Customization can all be composed
Encourages software structure that admits of
simple F/T mechanisms
Captures a large class of services
Cluster-based framework to instantiate TACC
Allows TACC authors to ignore SNS requirements
Performance, scalability, and failure management
adequate for real workloads
Stock hardware

9
TACC Server Status

Production cluster running at UCB since 4/97
TranSend web accelerator
Virtually zero downtime and zero maintenance
Software distribution in progress
Binaries for Solaris and Linux
Source snapshot
SDK and additional modules coming soon
Used as testbed for CS 294-6 graduate seminar

10
CS 294-6 Internet Services

Survey design implementation of Internet
services
Design and implement a service using TACC
Best ones deployed permanently, like TranSend
Real developers a way to stress the software
infrastructure (and documentation!)
Encourage other research projects to leverage TACC

11
New Services Deployed

Safe worker upload and execution
Cha-Cha, combining browsing and searching
Group Annotation for the Web
Top Gun Wingman, worlds only graphical Web
browser for the Palm Pilot
Top Gun MediaBoard
RTSP Archive Server
Others http//www.cs.berkeley.edu/fox/cs294-6/

12
Safe Worker Upload/Execution

ISAAC group David Wagner, Prof. Eric Brewer
Any user can author a new worker/module
New workers are uploaded dynamically into a
running TACC server
TACC route selection forms-based interface used
to select worker(s) for each MIME type
Workers run in a Janus sandbox

13
Cha-Cha Contextualizing Search

BAILANDO project Mike Chen, Jason Hong, Prof.
Marti Hearst (UCB SIMS)
TACC implementation improves performance
scaling of Cha-Cha prototype

Query(A)
HotBot
html
Cha-Cha
Layout(T)
Combine(A)
14
Group Annotation

Multivalent Documents/Digital Libraries project
Marcel Kornacker, Ray Gilstrap, Tom Phelps, Prof.
Robert Wilensky
Annotate the Web, without owning it

Web browser
Anno.Svr.
MVDEditor(Java)
UI
15
RTSP Archive Server Front End

MASH project Angela Schuett, Suchi Raman, Prof.
Steve McCanne
Goal Add scalability and availability using TACC

16
Thin Clients Top Gun Wingman

Worlds only graphical browser for PalmPilot
handheld device
5000 users worldwide
Richest feature set of any Pilot browser, many
uniquely enabled by proxy
9 out of 100 in Peoples Choice awards

17
Groupware Top Gun MediaBoard

mb comes to the Pilot
Combines MASH tools with TACC server
Enables future MASH collaboration
Inherits TACC robustness scalability

Superiority of proxy-based approach to enabling
thin clients successfully demonstrated.

18
Publication Activities

Invited submission to IEEE Personal Comms.
Special issue Adapting to network and client
variability
Structure, data semantics, and implementation of
interactive Internet applications
Collaboration with Dr. Murray Mazer, Open Group
Research Institute
Past work on annotating the Web and using HTTP
proxies to build Web applications
Top Gun Wingman

19
Summary

Validation of proxy architecture for thin clients
Wingman is the fastest browser and the only one
with graphics MediaBoard is unprecedented
(Continuing) validation of methodology platform
for building scalable Internet services
Successful internal external tech transfer
CS 294-6 projects
Wingman, MediaBoard, MASH collaboration
TranSend at UC Davis, SRI, soon Lucent
Next time the eye-watering demo

20
Credits

Top Gun Wingman Ian Goldberg, Anthony Polito,
David Lee
Top Gun MediaBoard Yatin Chawathe, Steve Fink
MASH/TACC integration Yatin Chawathe
RTSP Archive Server Angela Schuett, Suchi Raman
Cha-Cha Mike Chen, Jason Hong, Prof. Marti
Hearst
Annotate the Web Marcel Kornacker, Ray Gilstrap,
Tom Phelps, Prof. Robert Wilensky
Secure upload David Wagner