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IC Status – 29/4/02

IC Status – 29/4/02. Condor BS adaptor New interface handles JDF`s (condor,fbs,condorG) Multi-process consumers. In progress (crashes smaster on jobSubmitted()) Some obvious stuff. Client on same File System as master – reads user JDF. User code on same FS as master.

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IC Status – 29/4/02

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  1. IC Status – 29/4/02 • Condor BS adaptor • New interface handles • JDF`s (condor,fbs,condorG) • Multi-process consumers. • In progress (crashes smaster on jobSubmitted()) • Some obvious stuff. • Client on same File System as master – reads user JDF. • User code on same FS as master. • Want client FS separate from station and maybe Compute Node FS. • What`s happening with RTE?

  2. Submit D0 MC to EDG • Trivial to tar up mc_runjob prepared directories and run on Grid, but is it useful? • UK money for EU/US re-use. • Trivial because no input data. • Increase D0 MC prod for free. • GridPP Collab. 9/10th May. • 30mins in “tutorial” style. • Point out real issues with Data Management. • .brokerinfo has file locations. Still there at runtime? Pmaster ensures delivery, retries/fail-overs. Optimizer involved. • Draft architecture and differences in information flow.

  3. GSI in Sam • Toy client-server. Using gss-assist globus tools. • mutually authenticate hosts • pass user proxy, • map to user. • Authorization Server. • Use user proxy to transfer files, run jobs, Sam store, query Db, log resource usage. • User sam owns cache areas. • Map all users to sam at all sites. • Give user restricted sam privileges. • CAS • Community Authorization Service • Database of user privileges • Use user proxy to get a CAS proxy. • CAS proxy allows all or subset of users` privileges. E.g gridftp from d0mino:/sam/cache20 to sampc:/sam/cache1. • User still mapped to local unix account and unix permissions always obeyed. • Toy client-server-server model exists. • Client-station-stagerng • All in the detail.

  4. Integration of the Globus Security Infrastructure with SAM Authentication/Authorization Service: using the GSI certificate • identity to identify SAM users; using sam - service proxy for data transfers • GSI - enable Station, FSS , Stager and EWorker Stager/ EWorker Authorization Service Server Proxy Grid FTPd User Proxy Server Proxy Client Server Proxy User Proxy Station User Proxy Server Proxy Gabriele`s picture, from 8th March

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