Evaluation of the Globus Toolkit: Status

1
Evaluation of the Globus Toolkit Status

• Roberto Cucchi INFN Cnaf
• Antonia Ghiselli INFN Cnaf
• Giuseppe Lo Biondo INFN Milano
• Francesco Prelz INFN Milano
• Franco Semeria INFN Bologna
• Massimo Sgaravatto INFN Padova
• Cristina Vistoli INFN Cnaf
• Giulia Vita Finzi INFN Cnaf
• for the INFN GRID technical group

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Goals

• 5 sites Testbed (Bologna, CNAF, LNL, Padova,
  Roma1)
• Use case HLT CMS studies
• MC Prod. ? Complete HLT chain
• Services
• Resource management
• fork() ? Interface to different local resource
  managers (Condor, LSF)
• Resources chosen by hand ? Broker to implement a
  Global resource manager
• Data Mover
• to stage executable and input files
• to retrieve output files

3
Status (24 Jan.)

• Globus installed on 5 Linux PCs in 3 sites
  (Bologna, Cnaf, Padova)
• GSI
• Seems working
• MDS
• Lots of problems accessing the American server
  !!!
• Problems with automatic population and update of
  information
• Long response time
• Time out
• Not possible to test other services (i.e. GRAM)

4
Status (1 Mar.)

• Italian MDS Server at CNAF
• On-going tests no problems so far
• 4 PCs already registered (Cnaf, Mi, Pd)
• GRAM
• Job submission on remote host works !!
• On-going installation of Pythia Cmsim
• GSIFTP
• Installed at Cnaf and Padova
• On-going tests on LAN and WAN
• Bugs found in the Globus sw

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Next steps

• (Web) tools for MDS browsing
• Configurations to implement and test
• Globus clients accessing Globus Grid
• Globus jobs submitted to Condor pool
• Single machine with Globus gatekeeper configured
  as front end machine with Condor pool
• Condor pool as Globus resource
• Condor jobs submitted to Globus Grid (To-Globus
  glide-in Condor jobs)
• Personal Condor as broker

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Globus jobs
Globus client
Globus Client Accessing Globus GRID
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Globus jobs
Globus Grid
Globus client
Globus Client Accessing Globus GRID Condor pool
as Globus resource
Globus gatekeeper
Condor pool
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Site X
Condor jobs
Site Z
Personal Condor
To-Globus glide-in Condor jobs Personal Condor
as broker
Site Y
Condor pool
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Next steps (cont.)

• Broker
• Personal Condor
• High Throughput Broker (now pretty crude
  program)
• Development of other smart brokers ??
• Italian Certification Authority