GRID@Large PanelGRID@Large Panel““Making real large-scale grids for real Making real large-scale grids for real

money-making users: why, how and when?money-making users: why, how and when?””

August 2005

Achim Streit

Forschungszentrum Jülichin der Helmholtz-Gesellschaft

2 Forschungszentrum Jülich

Large?Large?

... in number of participating sites virtual organization management

... in compute capability resource management

... in storage capacity data and replica management, data access and transfer

... in geographical expansion network latency, bandwidth, availability

... in amount of users authentication/authorization, accounting/billing

... in middleware platforms interoperability

3 Forschungszentrum Jülich

Important aspects in large-scale GridsImportant aspects in large-scale Grids

easy and straightforward installation and configuration of Grid middleware platform

full interoperability of Grid middleware platforms, if more than one is used

seamless integration of new sites and resources in the Grid infrastructure

scalability and redundancy of major components and services for e.g. information, scheduling, accounting, ...

smooth and fast integration of new users at all sites common rules, policies, and methods for e.g. security

mechanisms, directory & file naming conventions, ... powerful monitoring system for jobs and resources

4 Forschungszentrum Jülich

DEISA’s approachDEISA’s approach

UNICORE as Grid middleware platform DEISA primer for new site administrators with all information

about naming conventions, operational methods, configuration files, hostnames and ports of core services, ...

dedicated network from NRENs and GEANT between the DEISA sites for job migration and data transfer

GPFS as storage and access to data LDAP for user data and integration in UNICORE User

DataBase (UUDB) LL-MC and LSF for resource management, co-allocation,

job re-routing, and migration Ganglia, Inca, and MDS2 for automated testing and

monitoring