OGF19 Workflow Actions

From minutes of OGSA Workflow session at OGF19 by Ali Anjomshoaa

1. Mapping Workflow to OGSA

• How can we map existing workflow systems onto OGSA(-EMS)
  • What are the ramifications of mapping workflow systems onto OGSA (execution plans?)
  • Volunteers:
    • OMII-UK
    • IBM ? Fabio
    • LeSC, IC ? Stephen McGough
    • Cardiff

2. Supporting Job Dependencies

• • Workflow boils down to managing job dependencies
  • Change / extend / wrap JSDL, BES, RSS to support (simple) job dependencies
  • Extend OGSA-EMS architecture to handle job dependencies
  • Volunteers:
    • Virginia
    • FLE ? Michel Drescher
    • Manchester ? Donal Fellows

3. Workflow Interoperability

• Workflow interoperability issues
  • Find out how workflows can interoperate in the OGSA environment
  • Volunteers:
    • N/A (delay investigating this issue for now!)

Notes

• Vertices (or nodes) of workflow are activities (wrapped JSDL documents)
• Error Handling:
  • Error handling is out of scope!
  • Error detection is IN SCOPE
• Graph representation SHOULD be out of scope
  • Simple collection and declaration is IN SCOPE
• Cyclic dependencies are out of scope!

• Is XPDL or the WfMC Workflow Reference Model of interest?
• Should we rename this effort from "workflow" to "choreography"?