L. McGinnis

1
Distributed Accounting on the GRID A Vision
Statement

• Original Paper by
• Bill Thigpen and Tom Hacker
• Revised by Laura McGinnis

2
Issues

• Mapping resource usage to GRID users
• Defining a usage economy or methods for resource
  exchange
• Describing implementation standards that minimize
  and compartmentalize the tasks required for a
  site to participate in GRID accounting.

3
Functional Requirements

• Decentralized
• Scalable
• Flexible
• Minimal impact on local accounting
• Should not make limiting assumptions about local
  practices

4
Mapping Usage to Users

• Local Accounts
• Identity
• Credentials
• Scalability
• Data transfer between provider and consumer
• Accountless Accounting

5
Economic Model for Exchange

• In a free market economy, the allocation of
  resources is determined solely by supply and
  demand. Ideally, supply and demand are not
  subject to regulation other than normal
  competition, but property rights are allocated
  and upheld so that trade can occur.
• Based on definitions from The Penguin Dictionary
  of Economics,
• edited by Graham Bannock, R. E. Baxter, and Evan
  Davis 1998 (http//www.xrefer.com).

6
Characteristics of FME
Suppliers Consumers
Resource Control Resource Selection
Value Price
Implementation Utilization
Autonomy Independence
Exchange Exchange
Automatic way to regulate the utilization of site resources by external resource consumers Automatic way to regulate the utilization of site resources by external resource consumers
7
Concepts and Definitions

• Supplier A provider of GRID resources
• Consumer A user of GRID resources
• Value A measurement of the usage of GRID
  resources. In the consumers perspective, this
  could be seen as cost or price.
• Exchange The act of utilizing GRID resources
  provided by a GRID supplier and received by a
  GRID consumer

8
Supplier Sites

• Provider Rates
• Quotes
• Track Utilization
• Job Account Information

9
Consumer Sites

• Usage Quote (How much will this cost?)
• Usage Request (OK. Ill buy it.)
• Quote Cancellation (Never mind.)
• Usage Query (How much did I spend?)

10
Valuing Resources

• Base value is set by resource owner
• Value can be used to attract or deter users
• Value must be quotable on request
• Supplier can decide what credentials are required
  from users

11
Functionality Methodology

• Chargeable items
• Conflict Resolution
• Account Balancing
• Policies
• Data interchange