Evaluation of the Globus Toolkit Status Roberto Cucchi

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

Goals n n 5 sites Testbed (Bologna, CNAF, LNL, Padova, Roma 1) Use case: HLT CMS studies n n MC Prod. Complete HLT chain Services n Resource management n n n fork() Interface to different local resource managers (Condor, LSF) Resources chosen by hand Broker to implement a Global resource manager Data Mover n n to stage executable and input files to retrieve output files

Status (24 Jan. ) n n Globus installed on 5 Linux PCs in 3 sites (Bologna, Cnaf, Padova) GSI n n Seems working MDS n Lots of problems accessing the American server !!! n n Problems with automatic population and update of information Long response time Time out Not possible to test other services (i. e. GRAM)

Status (1 Mar. ) n Italian MDS Server at CNAF n n n GRAM n n n Job submission on remote host works !! On-going installation of Pythia + Cmsim GSIFTP n n n On-going tests: no problems so far 4 PCs already registered (Cnaf, Mi, Pd) Installed at Cnaf and Padova On-going tests on LAN and WAN Bugs found in the Globus sw

Next steps n n (Web) tools for MDS browsing Configurations to implement and test: 1. 2. Globus clients accessing Globus Grid Globus jobs submitted to Condor pool • • 3. Single machine with Globus gatekeeper configured as front end machine with Condor pool as Globus resource Condor jobs submitted to Globus Grid (“To. Globus” glide-in Condor jobs) • Personal Condor as broker

Globus jobs Globus client Globus Client Accessing Globus GRID Globus Grid

Globus jobs Globus Grid Globus client Globus Client Accessing Globus GRID Condor pool as Globus resource Globus gatekeeper Condor pool

Globus Gatekeeper Site X Condor jobs Site Z Globus Gatekeeper Personal Condor “To-Globus” glide-in Condor jobs Personal Condor as broker Condor pool Site Y

Next steps (cont. ) n Broker n n Personal Condor High Throughput Broker (now “pretty crude program”) Development of other “smart” brokers ? ? Italian Certification Authority