New Features of GT4 Distinguished from GT3

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New Features of GT4- Distinguished from GT3

• Zhou Lei
• 1/26/05

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Outline

• WS Resource Framework
• Security
• WS-GRAM
• MDS4
• GridFTP, RFT, and RLS

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WS Resource Framework- Refactoring and evolution
of OGSI

• WS-Resource The composition of a Web service and
  a stateful resource
• Implied Resource Pattern A stateful resource is
  treated as an implied input for the processing of
  messages implemented by a Web service.

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WS Resource Framework- Refactoring and evolution
of OGSI
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Security

• CAS (nothing new)
• Transport-level Security Authentication via TLS
  (Default)
• Message-level Security WS-Security and
  WS-SecureConversation (poor performance)
• WSRF based delegation service
• WS AA (Message-level and Authorization Framework)

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WS GRAM- Review

• GT2 GRAM Gatekeeper/jobmanager
• GT3 GRAM OGSI based
• GT4 GRAM WSRF based

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WS-GRAM- Good performance

• Pre-WS (GT2) GRAM has better performance than
  that of GT3.0 GRAM, but comparable to that of
  GT3.2 GRAM
• GT4 GRAM has significant improvements in
  performance, scalability and stability

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WS-GRAM- Redesign

• Reduce overheads, such as memory footprint,
  interface optimization
• Move optional features out of critical path
• Control security cost, such as per-user
  credentials, no GASS (replaced by GridFTP and
  RFT)

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WS GRAM- Multiple jobs

• Multi-job submission
• Process coordination in a job
• Subjobs coordination in a multi-job

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WS MDS- Components

• Index service
• Trigger service
• Aggregator framework

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WS MDS- Index service

• WS-Resource properties for data
• WS-Resource properties collection and
  WS-Notification for aggregation
• No aggregation configuration, but a separate
  client does it

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WS MDS- Trigger service

• New service in GT4
• Perform various actions under a trigger condition
• Example send email when queue length on a
  compute resource goes over a threshold value.

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WS MDS- Aggregator framework

• WSRF mechanisms
• A complete reimplementation
• WS ServiceGroup APIs

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GridFTP, RFT, RLS, and DAI- GridFTP

• Not W.S. based and not wu-ftp based
• IPv6 support
• XIO based (XIO is an extensible and generic IO
  API)

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GridFTP, RFT, RLS, and DAI- RFT

• Reliable File Transfer
• Delete files on a GridFTP server
• Transfer atomically all or none
• Restore file permissions at the destination
• Configure the number of concurrent transfers
• Monitor the transfer status easily

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GridFTP, RFT, RLS, and DAI- RLS

• Replica Location Service
• Exists and bulk exists API and commands
• Rename and bulk rename API and commands

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GridFTP, RFT, RLS, and DAI- DAI

• Data Access and Integration
• UK project originally
• A solution for Grid database service
• Included by GT4

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• Thanks!