Aggiornamento sullo stato del Tier-2 di Catania

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Presentation transcript:

Aggiornamento sullo stato del Tier-2 di Catania Salvatore Monforte (salvatore.monforte@ct.infn.it) INFN Catania Responsabile Servizi di Calcolo e Storage del Tier-2 Workshop dei Tier-2 italiani di ALICE, Catania 19-20/12/2012

Sommario Infrastruttura di base Efficienze Conclusioni e attività future Catania, Workshop dei Tier-2 italiani di ALICE, 19-20/12/2012 - 2

xrootd Server on Redirector Layout Tier-2 CT 4507 10Gbps WAN 10Gbps Computing Farm 4948 LAN 1Gbps MTU=1500 2Gbps LAG 2Gbps LAG xrootd Server on Redirector 2Gbps LAG 2Gbps LAG prod-se-01 IBM DS4200 2Gbps LAG xrootd Server aliserv2 redundancy path 2Gbps LAG xrootd Server aliserv1 2Gbps LAG xrootd Server aliserv10 LAN 1Gbps MTU=9000 2Gbps LAG Fiber Channel 4Gbps GPFS 358TB 2Gbps LAG 2Gbps LAG 2Gbps LAG 2Gbps LAG 2Gbps LAG 2Gbps LAG gpfs-node-xx Catania, Workshop dei Tier-2 italiani di ALICE, 19-20/12/2012 - 3

Attività svolta: upgrade e tuning ALICE::CATANIA::SE storage upgrade aggiunti ~110TB (~130TB RAW, 15% loss ) ~117TB disponibili su ~358TB totali (utilizzo 68%) GPFS migrazione da 3.2.0.21 a 3.4.0.15 abilitati fast-enhanced-attributes VoBOX installato ALIEN v2.19-197 abilitato Torrent Installati e configurati 4 xrootd server (1 redirector) xrootd v3.2.4 network bandwidth 8Gbps ( 4 x 2Gbps ) Catania, Workshop dei Tier-2 italiani di ALICE, 19-20/12/2012 - 4

Traffico di rete su ALICE::CATANIA::SE ~ 244 MB/s ~ 934 MB/s ~ 690 MB/s Catania, Incontro con i referee di ALICE, 12.09.2012 - 5

Traffico di rete LAN vs. WAN Catania, Incontro con i referee di ALICE, 12.09.2012 - 6

Efficienza per ALICE – Catania sites (dal 12/9 al 17/12) black-out + storage errors + migration to GPFS 3.4.15 network maintenance upgrade to EMI + black-out migration to Torrent Catania, Workshop dei Tier-2 italiani di ALICE, 19-20/12/2012 - 7

Efficienza per ALICE – Catania site only (27/7-11/9 vs. 1/11-17/12) Prima Dopo Avg = 58.56 % Avg = 76.4 % Catania, Workshop dei Tier-2 italiani di ALICE, 19-20/12/2012 - 8

Efficienza per ALICE (ultimo mese – tutti i Tier-2) Catania, Workshop dei Tier-2 italiani di ALICE, 19-20/12/2012 - 9

Efficienza per ALICE – Catania sites (ultimo mese) TriGrid _Catania è diskless per ALICE Catania, Workshop dei Tier-2 italiani di ALICE, 19-20/12/2012 - 10

Efficienza per ALICE (ultimi 6 mesi – tutti i Tier-2) Catania, Workshop dei Tier-2 italiani di ALICE, 19-20/12/2012 - 11

Conclusioni La migrazione a GPFS 3.4.0.15 e l’installazione di 4 server Xrootd hanno aumentato la stabilità e il throughput l’efficienza di ALICE CATANIA riportata nell’ultimo mese paragonabile a quella di ALICE TRIGRID_CATANIA (diskless) nè da conferma Future attività Upgrade GPFS a 3.4.0.18 (released 12 Dec 2012) Upgrade Xrootd a 3.2.7 (released 11 Dec 2012) v3.2.6 Fix the fast response queue so that it doesn't run out of response slots causing a big performance penalty. This is a high priority fix. Catania, Incontro con i referee di ALICE, 12.09.2012 - 12