LEAD Project Discussion
Presented by: Emma Buneci
for
CPS 296.2: Self-Managing Systems
Source for many slides: Kelvin Droegemeier,
Year 2 site visit presentation.
Mesoscale Weather
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What Weather & IT Today Do …
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Radars Do Not Adaptively Scan
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The Case for Dynamic Adaptation
1. Adaptation in Time
2. Adaptation in Space
3. Ensemble Forecasting
4. Adaptive Observing Systems
5. Adaptive Cyber-infrastructure
6. Managing Forecast and Simulation Process
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Adaptation in Time
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Adaptation in Space
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Ensemble Forecasting
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Adaptive Observing Systems
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Adaptive Cyberinfrastructure
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Managing the Forecast & Simulation
Process
• Current State: 50,000 lines of Perl code.
• In Progress: LEAD Workflow Environment
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LEAD Service Oriented Architecture
Desktop Applications
• IDV
• WRF Configuration GUI
User
Interface
LEAD Portal Architecture?
Why A Service-Oriented
Crosscutting
Services
Education
Workflow
Visualization
• Flexible and malleable
• Platform independence
(emphasis on protocols, not
platforms)
• Loose integration via modularity
• Evolvable and re-usable (e.g. Java)
• Interoperable
by use of standards
Resource
Access
 robustness
Services
Portlets
MyLEAD
Query
Ontology
Control
Browse
Monitor
Control
Application & Configuration Services
Workflow
Engine/Factories
Host Environment
Application Host
GPIR
Workflow
Services
Workflow
Monitor
Execution Description
VO Catalog
Application Description
Geo-Reference GUI
WRF, ADaM,
IDV, ADAS
THREDDS
Stream
Service
Control
Service
Query
Service
Ontology
Service
Decoder/
Resolver
Service
Transcoder
Service/
ESML
Data Services
Authentication
Application Resource
Broker (Scheduler)
Catalog
Services
Authorization
Configuration and
Execution Services
Client Interface
Monitoring
Grid FTP
GRAM
Scheduler
SSH
OPenDAP
LDM
Generic
Ingest Service
RLS
OGSADAI
Notification
Distributed
Resources
Source: LEAD Team
Computation
Observations
• Streams
• Static
• Archived
Specialized
Applications
Steerable
Instruments
Data Bases
Storage 19
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Some Discussion Points
• Complexity of the infrastructure to support LEAD
– Lesson learned: viable solution where small number of
services are persistent; remaining are on-demand
• Challenges for the system administrators
– Large scale networks, supercomputers; different for sys.
Admins in industry setting?
• What lessons from this experiment will apply to
building similar infrastructures in other domains
• Future impact of LEAD
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