Status of LHCb PC Farm prototype

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Presentation transcript:

Status of LHCb PC Farm prototype Content PC rack configuration Powering tests Outlook (short term) 16/06/2004 Ph.Gavillet CERN/PH-LBC

Ph.Gavillet CERN/PH-LBC PC rack configuration 2 * Subfarm / 59U rack Each rack 1 * rackcooler CIAT 1 elec. Dist. box (1phase :63A) 1 * 48-port Control switch Each Subfarm 3 * 9-outlet reglettes (16A) 23 * PCs 1 * 24-port Data switch Currently 39 (23 + 16) PCs 16/06/2004 Ph.Gavillet CERN/PH-LBC

PC rack: current configuration 16/06/2004 Ph.Gavillet CERN/PH-LBC

Ph.Gavillet CERN/PH-LBC Powering tests (12/05) TS-EL (J.Pierlot, F.Courajoud) Test 1: 3-phase supply, 3 departs 3 departs (R,S,T ) supplying 3 reglettes (10A, 19 outlets) One (25A, C-curve) circuit breaker / depart 3 (off/on spaced by ~ 20s) every ~4 mins Powering OK (Full PC-rack booting in ~ 4 mins) Test2: 1-phase supply, 3 departs 3 departs (on 1 phase) as for Test 1 5 (off/on spaced by ~ 20s)) every ~4 mins Powering OK Test3: 1-phase supply, 6 departs 6 departs supplying one reglette each (10A, 9 outlets) One (16A, C-curve) circuit breaker / depart 5*off/on every ~ 20s, 3*off/on spaced by <1s) every ~ min 16/06/2004 Ph.Gavillet CERN/PH-LBC

Ph.Gavillet CERN/PH-LBC Outlook (short term) Complete 2nd Subfarm configuration Last PCs to be delivered on week 25 Installation completed by end of week 26 Powering test on full configuration Repeat On/Off tests Work out reglettes characteristics Circuit breakers (type, Amp) Conclude on single rack powering Repeat detailed LV measurements (K.Kahle et al.) Inrush currents Harmonic distortion Repeat cooling measurements on full configuration Power in / Power out balance Map of temperatures: In / behind PCs / Out Start investigating cooling of switches 16/06/2004 Ph.Gavillet CERN/PH-LBC