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GliteARC interoperability

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Allowing seamless job submission access to NorduGrid resources from Glite ... Bloat: NG Client ~ 10mb; Condor ~100mb. Interface changes. ( Glite update - ARC update) ... – PowerPoint PPT presentation

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Title: GliteARC interoperability


1
Glite/ARC interoperability
  • Christian Ulrik Søttrup
  • EGEE-II/(KnowARC)

2
Interoperabillity
  • Allowing seamless job submission access to
    NorduGrid resources from Glite clients and vice
    versa.
  • Implies interoperability of info systems
  • Glite -gt Nordugrid covered by EGEEII
  • ARC -gt EGEEII covered by KnowARC

3
Glite -gt Arc
  • Glite broker uses Condor-G to submit to LCG and
    Glite CEs, using GT2 and Condor-C respectively
  • Condor-G gt6.7.12 can submit to Arc
  • Idea create a Glite info server with Arc info
    and then modify the broker to use Condor-G Arc
    submit.

4
Glite -gt Arc Overview
5
Glite -gt Arc Status
  • Information System
  • preliminary system (arc-bdii.cern.ch) works
  • needs full scale testing
  • Problem with resource matching, Glite CE-matcher
    uses Glite specific comments from the bdii.
  • WMS condor
  • Development Glite-WMS system w. condor/Arc works
    (for Glite jobs)
  • New Glite version incorporates usable condor
  • JobAdapter needs test (and recoding)

6
Arc -gt Glite Gateways/Direct
  • Direct Integrating Nordugrid client and condor
  • Pros
  • Direct submission to Glite CEs
  • Cons
  • Bloat NG Client 10mb Condor 100mb
  • Interface changes. (Glite update -gt ARC update)
  • Gateways
  • Pros
  • Better scheduling
  • Cons
  • Scalability/price

7
Arc -gt Glite CE interface
  • Gateways/Direct not feasible
  • Solution Open interface for job management on
    Glite CEs
  • Good news CREAM a new CE type with a web service
    interface developed under EGEE
  • Bad news Not supported by Glite production CEs,
    yet. But is installed on Glite testbeds.

8
Arc -gt Glite Webservices
  • CREAM interface
  • Pros
  • Direct submission to EGEE controlled CEs
  • Scalability
  • Composability
  • Portability easy to build NG clients for
    windows and Mac
  • Cons
  • Performance Binary XML might help, but no
    standard yet.

9
Arc/Glite new solution
  • Integrating a CREAM compatible Web Service layer
    in Arc, both client and server.
  • Server CREAM layer can work independently of the
    Grid Manager
  • Pros
  • Gives interoperability through open interfaces.
  • As well as a WS interface for Arc. (Task 1.2)
  • Windows/Mac Arc client can use WS interface for
    easy porting.

10
Thank you
  • Questions?
  • Ideas -gt soettrup _at_ nbi . dk
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