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SLAC Site Report

SLAC Site Report. Chuck Boeheim Assistant Director SLAC Computer Services. Supported Systems. AIX 4 – <114 No new AIX systems being purchased Candidate for future phase out Solaris 2.6 -- 748 Current recommended desktop system

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SLAC Site Report

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  1. SLAC Site Report Chuck Boeheim Assistant Director SLAC Computer Services

  2. Supported Systems • AIX 4 – <114 • No new AIX systems being purchased • Candidate for future phase out • Solaris 2.6 -- 748 • Current recommended desktop system • Solaris 7 needs AFS client; schedule deployment around BaBar run schedule • Linux RH 6.0 -- >130 • Using Transarc AFS 3.5 Chuck Boeheim/SCS

  3. AFS • Entirely at AFS 3.5 • AFS 3.5 server on Solaris 2.6 • AFS 3.5 client on Solaris, AIX, Linux, NT • Servers now largely stable • Had long period of intensive work with Transarc • Clients stable except E1000 • Performance • Generally improved by 3.5 • Severe congestion on SMP servers Chuck Boeheim/SCS

  4. AFS Utilization Curve Chuck Boeheim/SCS

  5. BaBar Computing Chuck Boeheim/SCS

  6. HPSS/OOFS • HPSS has been deployed as a tape management system for BaBar • HPSS does NOT manage disk pools • OOFS developed to migrate/retrieve objectivity databases using HPSS • Issue about manpower needed to operate • Issue what to do about general staging needs Chuck Boeheim/SCS

  7. Adventures With Autoclient • How to cheaply manage 320 system images? • Autoclient from Sun: • System boots via net from server • / mounted r/o from server • /etc mounted r/w from server • /usr/vice/cache, /tmp, swap local • Ratio of one server per 50 clients Chuck Boeheim/SCS

  8. Autoclient Results • Systems did install on boot • Quick recoveries after outage • Uncertain if this makes upgrades easier • Single point of failure for 50 systems • Some odd behavior with cachefs • Evaluating approach now, working with Sun Product Manager Chuck Boeheim/SCS

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