Cracow Grid Workshop 2006 (CGW2006) 15 th -18 th October 2006

1. Development of a billing framework for D-GridProf. Dr. Gabriele von Voigt, Dr. Claus-Peter Rückemann,Wolfgang Müller Cracow Grid Workshop 2006 (CGW2006) 15th-18thOctober 2006

2. Overview • The D-Grid Initiative • Motivation • Scientific background • Existing billing concepts and solutions • Resulting concept of the D-Grid billing framework • Summary and future developments Gabriele von Voigt,Claus-Peter Rückemann,Wolfgang Müller | CGW2006 17.10.06| Folie 2

3. Community User and application interfaces GridSphere UNICORE GAT API Grid service functions D­Grid services LCG/gLite accounting andbilling Data management scheduling andworkflow mgmt. Globus Basicservices Monitoring Security Data interfaces Available D­Grid resources Distributed compute resources Data/ Software Distributed data archives Networkinfrastructure The D-Grid Initiative - Overview • InGrid • MediGRID • TextGrid • AstroGrid-D • C3-Grid • HEP-Grid DGI – Integration Project of D-Grid Gabriele von Voigt,Claus-Peter Rückemann,Wolfgang Müller | CGW2006 17.10.06| Folie 3

4. Hamburg Bremerhaven Oldenburg Berlin Hannover Potsdam Göttingen Dortmund Jülich Wuppertal Dresden Siegen Köln Marburg SanktAugustin Darmstadt Heidelberg Karlsruhe Stuttgart München Freiburg Oberpfaffenhofen The D-Grid Initiative - German Core Grid sites Gabriele von Voigt,Claus-Peter Rückemann,Wolfgang Müller | CGW2006 17.10.06| Folie 4

5. Motivation • Even scientific environments aim at sustainability and refinancing resource • provision (especially after the funding period). • For the owners of grid resources it is essential to: • generate incentives for the constant provision of grid services to meet the needs of grid resource consumers, • enabling them to quest offers of resources of other providers when their own capacities are insufficient, • allowing them to maximize their resource utilization by offering a competitive service access price in order to attract consumers, and as a consequence, • reducing their total costs of ownership (TCO). • The users (resource consumers) have the option of choosing • the providers that best meet their requirements or • between rental or self-procurement of computing resources. Gabriele von Voigt,Claus-Peter Rückemann,Wolfgang Müller | CGW2006 17.10.06| Folie 5

6. Scientific background • Elements of the billing procedure • 1. step: • receiving the usage data provided by the accounting • 2. step: • pricing of the single entity of the accounting data based on the contract between resource provider and resource user (rating, tariff management, account management, contract management) • 3. step: • determination of the overall price for the resource usage and presenting the invoice to the resource user (bill presentment) Gabriele von Voigt,Claus-Peter Rückemann,Wolfgang Müller | CGW2006 17.10.06| Folie 6

7. Existing billing concepts and solutions • „Data Grid Accounting System“ (DGAS) • decentralised banking structure • checking the creditability of the user by his bank account before job submission • the resource provider can apply various pricing metrics (such as wall clock time, CPU time, memory, storage, network traffic) • each resource provider can choose the preferable metric according to his pricing policy • uses only grid credits as a virtual currency, provides no interface to common automated payment mechanisms (such as Paypal or Netcash) • uses only gLite as a middleware Gabriele von Voigt,Claus-Peter Rückemann,Wolfgang Müller | CGW2006 17.10.06| Folie 7

8. Existing billing concepts and solutions • „SweGrid Accounting System“ (SGAS) • decentralised banking structure • checking the creditability of the user by his bank account before job submission • creating holds on the bank account while job processing in order to avoid overspending of grid credits • implemented within SweGrid and running within a production environment • uses only grid credits as a virtual currency, provides no interface to common automated payment mechanisms • uses only Globus toolkit as a middleware • only one nearly homogenous resource type is used within the SweGrid • only one metric (wall clock time per node) is used for pricing Gabriele von Voigt,Claus-Peter Rückemann,Wolfgang Müller | CGW2006 17.10.06| Folie 8

9. Existing billing concepts and solutions • „GridBank/GASA” framework in the context of the Australian GRIDBUS project • checking the creditability of the user by his bank account before job submission • creating holds on the bank account while job processing in order to avoid overspending of grid credits • the resource provider can apply various pricing metrics (such as wall clock time, CPU time, memory, storage, network traffic) • uses virtual and real currencies • open interface to existing payment handling systems • enables different payment strategies (such as pay before use, pay as you go, post-payment) • centralised grid bank server • Globus toolkit as a middleware • developed within the scope of the project but no production phase yet Gabriele von Voigt,Claus-Peter Rückemann,Wolfgang Müller | CGW2006 17.10.06| Folie 9

10. Resulting concept of the D-Grid billing framework • Inquiry among the D-Grid resource provider and resource user (D-Grid communities and the German Core Grid Sites) • The major features are: • payment after job submission but guaranteeing sufficient user’s funds before job submission • necessary security from job submission up to payment between user, resource broker, resource provider and clearing institution • various mechanisms of price building for resource providers • ability to handle various currencies • existence of clearing institutions (bank service, account management) • installation of a procedure for the settlement of disputes and conflicts • independent of the utilized middleware • special emphasis on virtual currency for spending funded budgets Gabriele von Voigt,Claus-Peter Rückemann,Wolfgang Müller | CGW2006 17.10.06| Folie 10

11. Summary and future developments • D-Grid needs an extended interpretation of billing up to the full payment process and has to take into account the German federal funding policy. • A comprehensive billingsolution for the mutual provision and usage of grid resources will be developed and implemented. • A transparent and comprehensible billing framework for grid computingis going to be established. • The aim is to supply a multiplicity of users, both from the scientific range and from the economy. • Services will be offered by a multiplicity of providers. • The project is funded by • www.d-grid.de Thank you for your attention. Gabriele von Voigt,Claus-Peter Rückemann,Wolfgang Müller | CGW2006 17.10.06| Folie 11