Virtual Data Browser

1
Virtual Data Browser

• Shava Smallen

2
Grappa

• Grid Access Portal for Physics Applications
• Based on XCAT Science Portal technology
• Framework for building application-specific
  science portals
• Execution management based on notebooks
• A collection of scripts, html forms, and pages
• Sub-notebooks save the parameters

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Grappa (cont.)

• Prototype has been developed
• Development of an Athena notebook
• Submission of jobOptions file to a remote
  resource via Globus CoG
• File staging
• File editor
• Next steps
• Interface to GVDS

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Virtual Data Browser

• An interface by which a user can browse and
  retrieve virtual data
• Functionality analogous to that of a web browser

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Web Browser

• Navigate content
• Search content (via search engines)
• Create content (composer)
• Store bookmarks to commonly visited sites
• User information and preferences
• Push technology (e.g. stock quotes)

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Browse Transformations
Browse Derivations/VDP
Create Transformation
Submit Derivation To Planner
Create Derivation
Listener
Virtual Data Browser
GriPhyN Virtual Data System
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Browse Derivations

• Navigate
• Point N Click (hierarchical view)
• Search by attributes
• Search filters
• Intelligent filters/Search templates (Yong)
• Store bookmarks for later reference
• While querying, VDB will supply GVDS with user
  profile for authentication, cost estimates, etc.
  purposes

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User Profile

• Credential management
• E.g., renew proxy, CAS server
• Specify GVDCs
• E.g., ATLAS, CMS, private
• Resource management
• VDB configuration
• Bookmark management

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Submitting Derivation to Planner

• Planner will decide to fetch or rematerialize
• (a new derivation specifies data that has never
  been materialized)
• User gets bookmark to job handle added to special
  My Requests folder where they can monitor status,
  talk to planner, cancel request, etc.

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Create Derivation

• User finds transformation
• Fills in parameters
• Execution specific (i.e., transformation
  parameters)
• Application specific (i.e., add metadata)
• Specifies permissions on who can access data

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Create Transformation

• Specify parameters
• Configuration file
• Environment
• Command-line
• Metadata
• Load existing transforms
• Documentation
• Validation stage
• Run to test that app is Grid-able
• Commit