Networking with Dynamic Workflows

1
Networking with Dynamic Workflows Fernando
Doylet December 2003 DCIS 740 Assignment
2 Nova Southeastern University
2

• Networking with Dynamic Workflows
• Benefits of Flexible Workflows
• Improving Internal Workflows
• Inter-Organizational Workflows
• Routers' Workflows
• Conclusion

3

• Networking with Dynamic Workflows
• Benefits of Flexible Workflows
• Concept
• Flexibility of a workflow is its ability to
  execute on a partially defined model.
• full specification made at runtime
• may be unique to each instance
• - countless number of possible combinations

4

• Networking with Dynamic Workflows
• Benefits of Flexible Workflows
• e-workflow.org
• eliminates unnecessary steps
• process control through audit trails
• service consistency predictability
• software flexibility enables re-design
• - continuous streamlining simplification

5

• Networking with Dynamic Workflows
• Improving Internal Workflows
• BBC News Project Jupiter
• - re-examined entire workflow process
• - new server-based production workflow
• - automated notifications monitoring
• - Journalist needed tools on desktops

6

• Networking with Dynamic Workflows
• Improving Internal Workflows
• Chimera-Exc language to specify
• exceptions in workflows
• - based on detached active rules
• - periodic or event activation
• - rules executed in parallel to consider
• priority
• - data manipulation events stored in
• appropriate database triggers

7

• Networking with Dynamic Workflows
• Improving Internal Workflows
• Fujitsu global software production projects
• supporting diverse workflows
• Problem Information Management System
• (PIMS)
• ad-hoc problems converted to workflows
• configurable state-based workflow model
• - data-driven control methods to track status

8

• Networking with Dynamic Workflows
• Improving Internal Workflows
• Kinesthetic eXtreme (KX) model
• on real-world mass-market Internet service
• - minimally invasive external facilities
• (probes, gauges, controllers, effectors)
• - over pre-existing software service parameters
• - enables continuous and remote monitoring
• - provides corrective feedback

9

• Networking with Dynamic Workflows
• Improving Internal Workflows
• Kinesthetic eXtreme (KX) model
• on real-world mass-market Internet service

10

• Networking with Dynamic Workflows
• Inter-Organizational Workflows
• SALSA Workflow Management System (WfMS)
• - insulate specs from organization level changes
• new design-time tools
• extending OrbWork runtime engine
• - specific cooperation contracts

11

• Networking with Dynamic Workflows
• Inter-Organizational Workflows
• Dynamic Workflow Model (DWM)
• to enhance the Internet-based Scalable
• E-business Enterprise (ISEE) architecture
• provides Application Programming Interfaces
• (APIs) to modify process model at runtime

12

• Networking with Dynamic Workflows
• Inter-Organizational Workflows
• Dynamic Workflow Model (DWM)

13

• Networking with Dynamic Workflows
• Inter-Organizational Workflows
• Dynamic Workflow Model (DWM)

14

• Networking with Dynamic Workflows
• Inter-Organizational Workflows
• Computational chemistry components
• integrated into a grid workflow environment
• grid access through web services
• grid workflow management service using
• network of workflow management web services

15

• Networking with Dynamic Workflows
• Inter-Organizational Workflows
• Intelligent Web Services (IWSs)
• facilitate short-term fluid relationships
• between Customers Suppliers
• - Trading Partner Agreements (TPAs)
• - 4 layers above the physical network

16

• Networking with Dynamic Workflows
• Inter-Organizational Workflows
• Intelligent Web Services (IWSs)

17

• Networking with Dynamic Workflows
• Routers' Workflows
• Adaptive Routing Control (ARC) algorithm
• - to improve routing performance
• - central server to decide most efficient path
• current available bandwidth
• instead of total fixed bandwidth
• - identify congested routes

18

• Networking with Dynamic Workflows
• Routers' Workflows
• Adaptive Routing Control (ARC) algorithm

19

• Networking with Dynamic Workflows
• Routers' Workflows
• Adaptive Routing Control (ARC) algorithm

Algorithm Item Conventional (Static) Conventional (Dynamic) ARC (Adaptive)
Routing strategy Static Dynamic Adaptive
Link cost (LC) Number of hops Total bandwidth Available bandwidth and Link utilization
Node cost (NC) Ignore Ignore Required
Priority handling Fixed Classification or notification Priority queue with multilevel feedback
Adjustability None LC is partially adjustable Both LC and NC are adjustable
Performance Poor Medium Good
20

• Networking with Dynamic Workflows
• Routers' Workflows
• News 12 in Long Island NY
• router-server hybrid solution
• - save 1/3 of routing requirements
• - scalable and cost-effective
• - eliminates need for hard-wiring
• - no pre-allocating router resources

21

• Networking with Dynamic Workflows
• Routers' Workflows
• Bluetooth specification
• with extremely routing in mind
• (Halsall, 2000)
• - connects to and use any network it finds
• - no reconfiguration required
• - royalty-free standard at bluetooth.org

22

• Networking with Dynamic Workflows
• Routers' Workflows
• Load Balancer Server (Dennis, p. 295)

23

• Networking with Dynamic Workflows
• Conclusion
• Information Systems are evolving
• from data-centric information storage
• to process-centric dynamic workflows