Status of Globus activities within INFN (update)

1
Status of Globus activities within INFN(update)

• Massimo Sgaravatto
• INFN Padova
• for the INFN Globus group
• globus_at_infn.it
• http//www.pd.infn.it/sgaravat/
• INFN-GRID/Globus

2
Globus activities within INFN

• WP Installation and Evaluation of the Globus
  Toolkit of the INFN-GRID Project
• Goal evaluate the Globus toolkit as a GRID
  framework providing basic services
• Which services can be useful ?
• What is necessary to integrate/modify ?
• What is missing ?
• Duration 6 months
• Results of this first evaluation used to plan
  future activities

3
Tasks

• Globus deployment
• Security
• Information Service
• Resource Manager
• Data Access and Migration
• Fault Monitoring
• Execution Environment Management

4
Globus deployment (see Flavias presentation)

• Goal reduce complexity and manpower for Globus
  deployment and maintenance
• Already done
• Modified Globus software kits (including bug
  fixes) available on AFS
• INFN specific installation instructions for
  Globus 1.1.3
• Supported OS Linux and Solaris
• Configuration instructions for GIS
• LSF and Condor (and PBS) as local resource
  manager systems
• Italian Certification Authority
• Script for post-install operations
• To do
• Tools to enable local administrators to
  quasi-automatically install and deploy Globus

5
Security (GSI)

• Already done
• Evaluation of the Globus security architecture
• INFN certification authority able to issue Globus
  certificates
• Modified script to generate certificate requests
• To do
• Definition and implementation of CAs architecture
• Management of groups of users
• I.e. a certain Globus resource must be available
  to all members of a specific physics group

6
Information Service (GIS)

• Already done
• INFN MDS server serving Globus 1.1.1 and 1.1.2
  installations
• Definition and on-going implementation of test
  architecture of GIS (for Globus 1.1.3)
• Web interface for browsing
• Preliminary activities on integrating the default
  schema with other info (file system)
• To do
• Tests on performance and scalability
• Definition and implementation of the GIS
  architecture
• Other tools and interfaces for Grid users and
  administrators
• Integration of the default schema with other
  info
• Which info are necessary ???

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INFN GIS Architecture (test phase)
Dcinfn,dcit, ogrid
Top Level INFN GIIS
Expcms, ogrid
Dcbo, Dcinfn, dcit,ogrid
INFN CMS GIIS
Dcmi,Dcinfn, dcit,ogrid
GIIS
GIIS
Milano
Bologna
8
Resource Management (GRAM)

• Already done
• Tests with Condor, LSF and PBS as underlying
  resource management systems
• Evaluation of RSL as uniform language to specify
  resources
• Cooperation between GRAM and GIS
• Submission of Condor jobs to Globus resources
  (Condor-G and GlideIn mechanisms)
• To do
• Complete on-going tests
• Tests with real applications
• Solve the problems
• Serious problems with scalability and robustness

9
Other tasks

• Preliminary tests with Globus tools for data
  access and migration
• Evaluation of HBM for fault detection
• but the HBM package is not seeing active
  development
• Evaluation of GEM as service for code migration
• but the GEM service now provides only very
  limited capabilities (executable staging)
• Preliminary tests with GARA
• Network and CPU advance reservation