SCEC Grid Environment

1
SCEC Grid Environment
2
SCEC Cybershake

• Calculate hazard curves by generating synthetic
  seismograms from estimated rupture forecast

Hazard Map
Strain Green Tensor
3
SCEC VO ComputingResources
4
System Components
Workflow Scheduler/Engine
Workflow Refiner
Workflow Creation
Data Management Services
Data Catalog
Computational Services
VO Service Catalog
Provenance Catalog
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Service Oriented Science
Function
Resource

• Decompose across network
• Clients integrate dynamically
• Select compose services
• Select best of breed providers
• Publish result as new services
• Decouple resource service providers

6
Technology Requirements Integration
Decomposition
Users

• Service-oriented applications
• Wrap applications data as services
• Compose services into workflows
• Express community policy

Composition
Workflows
Invocation
ApplnService
ApplnService

• Service-oriented Gridinfrastructure
• On-demand service hosting
• Service provisioning
• Security policy management

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Bootstrapping a VOby Assembling Services

• 1) Integrate services from other sources
• Virtualize external services as VO services
• 2) Coordinate compose
• Create new services from existing ones

Community
Content
Services Provider
Services
Capacity Provider
Capacity
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TeraGrid Science Gateways InitiativeCommunity
Interface to Grids
TeraGrid
Grid-X
Grid-Y

• Common Web Portal or application interfaces
  (database access, computation, workflow, etc).
• Back-End use of TeraGrid computation,
  information management, visualization, or other
  services.
• Standard approaches so that science gateways may
  readily access resources in any cooperating Grid
  without technical modification.

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Virtualizing Existing Services into a VO

• Establish service agreement with service
• E.g., WS-Agreement
• Delegate use to VO user

User B
User A
VO User
VO Admin
Existing Services
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EmbeddedResource Management
Client-side
VO Admin
Deleg
Deleg
GRAM
GRAM
Cluster Resource Manager
Headnode Resource Manager
VOUser
VOUser
Monitoring and control
VO Job
Deleg
GRAM
Cluster Resource Manager
Other Services
VO Scheduler
. . .

• VO admin delegates credentials to be used by
  downstream VO services.
• VO admin starts the required services.
• VO jobs comes in directly from the upstream VO
  Users
• VO job gets forwarded to the appropriate resource
  using the VO credentials
• Computational job started for VO

VO Job
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The Condor Brick
Private Network
Public Network
VO Admin
Deploy Brick
Allocate resources Initiate job starters(i.e.
glidein)
GRAM
Allocate resourcesInitiate management services
GRAM
VOUser
Local CondorEnvironment
Execute Jobs via Condor-C
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Cybershake on the SCEC VO
Provenance Catalog
Data Catalog
Workflow Scheduler/Engine
VO Service Catalog
TeraGrid Storage
SCEC Storage
TeraGrid Compute
VO Scheduler