Sheffield Computing. Matt Robinson Elena Korolkova Paul Hodgson
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1 Sheffield Computing Matt Robinson Elena Korolkova Paul Hodgson
2 Tier-3 Zero gridpp funding has gone into the Tier-3 cluster. It is entirely funded by the PPPA groups at Sheffield. Currently stands at 130 CPUs and ~50 TB of disk. Mostly built in-house. Running 32 bit SL4 until ATLAS SW stops supporting it.
3 Tier-3 primary server hep0: 4 Opteron Cores, 8 GB RAM Upgrade to 12 Cores & 32 GB at Xmas ssh gateway (bastion-esque) Account Server, Users home areas
4 Tier-3 NFS Disk Servers Mostly in 3 (2 atlas, 1 general purpose) 13 TB (formatted) raid-5 arrays (mdadm, sata_mv). Also some older smaller servers TB machines each have 6 gigabit links split between groups of worker nodes.
5 Tier-3 desktops About 40 machines, used by Academics RA s and PhD students. Same shared file-systems as servers and worker nodes Capable of direct job submission. Stuck with 100Mb University network.
6 Tier-3 worker nodes 50 machines. Networked in DMZ. Mixture of 32 bit and 64 bit. Gradually phasing out 32 bit machines in time for SL5 upgrade. 64 bit have 2 GB/core. Continuous HW upgrades as demand requires and funding allows.
7 Tier-3 Network Layout Servers attached to DMZ and internet. Desktops Internet Desktops attached to internet Servers hep0 Workers attached to DMZ. Worker Nodes
8 Tier-3 Network Workers and servers in dedicated machine room together, so many networking options. Multiple interfaces in each server so that data can bypass network bottlenecks Routing rules on disk servers enforce it.
9 Tier-3 Network Layout Server Server Server Top level switch Worker Switch Worker Switch Worker Switch 12 Worker Nodes 12 Worker Nodes 12 Worker Nodes
10 Tier-3 Machine Room
11 Tier-3 Software Every machine configured as LCG UI. AFS on everything. About 10 ATLAS offline releases installed at any one time. Plus production caches. Any software the users want, they get.
12 Tier-3 P.S. NFS access to web server content from whole cluster. Supports many diverse experiments but choice of Linux version determined by ATLAS. No virtualisation.
13 Ganglia:: HEP Grid Report 29/06/ :28:11 Tier-3 Status HEP Grid > --Choose a Source Monitoring Running Jobs: 106 Pending Jobs: 0 Active CPUs: 106 Free CPUs: 24 Temperature: Alarms: C Enabled HEP Grid (3 sources) (tree view) CPUs Total: 209 Hosts up: 90 Hosts down: 0 HEP Grid Report for Mon, 29 Jun :26: Last hour Sorted descending Get Fresh Data Show Queues Ganglia Avg Load (15, 5, 1m): 52%, 56%, 57% Localtime: :26 Workers (physical view) CPUs Total: 130 Hosts up: 50 Hosts down: 0 front page Avg Load (15, 5, 1m): 75%, 80%, 81% Localtime: :26 yesterday morning Servers (physical view) CPUs Total: 22 Hosts up: 7 Hosts down: 0 Avg Load (15, 5, 1m): 29%, 30%, 32% Localtime: :26 Desktops (physical view) CPUs Total: 57 Hosts up: 33 Hosts down: 0 Avg Load (15, 5, 1m): 9%, 10%, 12% Localtime: :26 Snapshot of the HEP Grid Legend Workers Servers Desktops Page 1 of 2
14 Laptops Recommending Macs these days. No specific policy. No rules. About 50. New PC laptops are usually upgraded from Vista to XP and then dual booted with SL5 (custom kernel) by Muggins here. Takes about 1 day, but never had one yet that didn t work like this.
15 Tier-3 Upgrade plan Need to retire 32 bit desktops and workers over the next 12 months, give or take. Building worker nodes mostly in ATX midi towers on shelves out of Phenoms. May put bigger disks in the disk servers.
16 Tier-2 Machine Room
17 Tier Single Core 2.4 GHz Opterons (2 GB/core) in 100 1u boxes. 64 bit SL4. PXE - Kickstart - Bash No resources shared with Tier TB (formatted) raid-5 (mdadm) disk servers (DPM). Shared gigabit networking.
18 Tier-2 Monitoring
19 Tier-2 Performance ~97% in Standard tests SI/Core still reasonable despite age Occasional Thermal Events Losing RAM, disks and PSU s (irreplaceable), but spare machines coming available.
20 cstcdie P P P P P P P P P P P P P P P P P P P P 100% 100% 87% 92% Total 77% 86% 92% 93% UK SAM Test Results UK SAM Test Results 29/06/ :37:19 The actual tests are currently: CE: CE-sft-job, CE-sft-softver, CE-sft-caver, CE-sft-brokerinfo, CE-sft-csh, CE-sft-lcg-rm, CE-host-cert-valid SRMv2: SRMv2-del, SRMv2-get, SRMv2-get-SURLs, SRMv2-gt, SRMv2-host-cert-valid, SRMv2-ls, SRMv2-ls-dir, SRMv2-put Obligatory: SAM Tests Availability is defined by: AND the results of each sensor Current (CE, SE status: or SRMv2 Running etc) at a CE or SE Current status: Running OR the results for multiple CEs Most or SEs recent at a site job submitted on Mon Jun at 12:15 Most recent job submitted on Mon Jun at 12:15 AND the sensor results The times refer to when the result was queried not necessarily The when times the refer test was to when performed. the result Click was on queried a result not for necessarily more information. when the The test key was is performed. P: Click History: Passed, W: Warning, F: Failed, C: Critical, M: Maintenance. Passed, W: Warning, F: Failed, C: Critical, M: Maintenance. Site Site 2Q07 3Q07 4Q07 1Q08 2Q08 3Q08 4Q08 1Q09 2Q09 CE SRMv2 Availability CE SRMv2 EFDA-JET EFDA-JET 76% 64% 85% 92% 70% Hours 91% ago: 77% % 6 596% Hours 3 2 ago: Hrs 7 Week 6 5 Month Mon RAL-LCG2_Tier-1 RAL-LCG2_Tier-1 83% EFDA-JET 96% 96% 94% 97% 99% 98% W W W98% W W92% W W WEFDA-JET W P W W W W W W W W W P W100% W W W96% W W99% W W W96% P W W W W W W W W W P UKI-LT2-Brunel UKI-LT2-Brunel99% RAL-LCG2_Tier-1 95% 100% 84% 92% 84% 92% M M100% M M100% M M M MRAL-LCG2_Tier-1 M M M M0% M M40% M M86% M M M96% M UKI-LT2-IC-HEP UKI-LT2-IC-HEP 95% UKI-LT2-Brunel 98% 100% 95% 92% 89% 95% P P P82% P P88% P P P UKI-LT2-Brunel P P P P P P P P P P P P P 100% P P 100% P P P100% P P 100% P P UKI-LT2-IC-LeSC UKI-LT2-IC-LeSC 83% UKI-LT2-IC-HEP 92% 94% 95% 91% 93% 85% F F F87% F F85% F F F UKI-LT2-IC-HEP F P P P P P P P P P P P F F0% F F32% F F 83% F F F85% P P P P P P P P P P P P P P P P P P P P P UKI-LT2-QMUL UKI-LT2-QMUL56% UKI-LT2-IC-LeSC 56% 75% 41% 53% 94% 94% M M M96% M M98% M M MUKI-LT2-IC-LeSC M M M M0% M M62% M M91% M M M86% M UKI-LT2-RHUL UKI-LT2-RHUL94% UKI-LT2-QMUL 86% 82% 84% 96% 93% 90% P P 100% P P P99% P P P UKI-LT2-QMUL P P P P P P P P P P P P P 100% P P 100% P P P100% P P P97% P P P P P P P P P P P UKI-LT2-UCL-CENTRAL UKI-LT2-UCL-CENTRAL 72% UKI-LT2-RHUL 65% 53% 50% 0% 7% 42% P P P68% P P37% P P P UKI-LT2-RHUL P P P P P P P P P P P P P 100% P P 100% P P P100% P P P98% P P P P P P P P P P P UKI-LT2-UCL-HEP UKI-LT2-UCL-HEP 51% UKI-LT2-UCL-CENTRAL 81% 53% 77% 82% 77% 86% F F F68% F F99% F F F UKI-LT2-UCL-CENTRAL F F P P P P P P P P P P F F0% F F 0% F F 13% F F F53% F UKI-NORTHGRID-LANCS-HEP UKI-NORTHGRID-LANCS-HEP 52% UKI-LT2-UCL-HEP 92% 95% 89% 94% 96% 83% P P P96% P 100% P P P P UKI-LT2-UCL-HEP P P P P P P P P P P P P P 100% P P P99% P P100% P P P83% P UKI-NORTHGRID-LIV-HEP UKI-NORTHGRID-LIV-HEP 95% UKI-NORTHGRID-LANCS-HEP 91% 98% 70% 97% 93% 98% P P P98% P P99% P P P UKI-NORTHGRID-LANCS-HEP P P P P P P P P P P P P P 100% P P 100% P P P100% P P P98% P UKI-NORTHGRID-MAN-HEP UKI-NORTHGRID-MAN-HEP 99% UKI-NORTHGRID-LIV-HEP 99% 87% 98% 87% 99% 92% P P P93% P P96% P P P UKI-NORTHGRID-LIV-HEP P P P P P P P P P P P P P 100% P P 100% P P P 99% P P P98% P UKI-NORTHGRID-SHEF-HEP UKI-NORTHGRID-SHEF-HEP 50% UKI-NORTHGRID-MAN-HEP 37% 82% 98% 96% 96% 97% P P P97% P P98% P P P UKI-NORTHGRID-MAN-HEP P P P P P P P P P P P P P 100% P P 100% P P P 99% P P P95% P UKI-SCOTGRID-DURHAM UKI-SCOTGRID-DURHAM 92% UKI-NORTHGRID-SHEF-HEP 91% 92% 94% 85% 95% 84% P P P97% P P97% P P P UKI-NORTHGRID-SHEF-HEP P P P P P P P P P P P P P 100% P P 100% P P P 98% P P P98% P UKI-SCOTGRID-ECDF UKI-SCOTGRID-ECDF UKI-SCOTGRID-DURHAM 13% 66% 72% 83% 99% P P P96% P P93% P P P UKI-SCOTGRID-DURHAM P P P P P P P P P P P P P 100% P P 100% P P P 98% P P P97% P UKI-SCOTGRID-GLASGOW UKI-SCOTGRID-GLASGOW 89% UKI-SCOTGRID-ECDF 93% 96% 85% 97% 96% 98% P P P97% P P99% P P P UKI-SCOTGRID-ECDF P P P P P P P P P P P P29/06/2009 P 100% P P12:37:19 100% P P P 99% P P P95% P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P UKI-SOUTHGRID-BHAM-HEP UKI-SOUTHGRID-BHAM-HEP 88% UKI-SCOTGRID-GLASGOW 89% 98% 87% 97% 97% 99% P P P98% P P97% P P P UKI-SCOTGRID-GLASGOW P P P P P P P P P P P P P 100% P P 100% P P P100% P P P98% P P P P P P P P P P P UKI-SOUTHGRID-BRIS-HEP UKI-SOUTHGRID-BRIS-HEP 91% UKI-SOUTHGRID-BHAM-HEP 95% 100% 99% 98% 98% 96% M M M 98% M 100% M M M MUKI-SOUTHGRID-BHAM-HEP M M F F F F M M0% M M M M M M M M F F F F Page 163% of 2 91% 97% UKI-SOUTHGRID-CAM-HEP UKI-SOUTHGRID-CAM-HEP 50% UKI-SOUTHGRID-BRIS-HEP 75% 70% 93% 85% 84% 90% P P P 98% P P 95% P P P UKI-SOUTHGRID-BRIS-HEP P P P P P P P P P P P P P 100% P P 100% P P P100% P P P99% P P P P P P P P P P P UKI-SOUTHGRID-OX-HEP UKI-SOUTHGRID-OX-HEP 79% UKI-SOUTHGRID-CAM-HEP 82% 90% 99% 90% 93% 88% P P P 85% W P 99% P P P UKI-SOUTHGRID-CAM-HEP P P P P P P P P P P P P P 100% P P 100% W P P 95% P P P96% P P P P P P P P P P P UKI-SOUTHGRID-RALPP UKI-SOUTHGRID-RALPP 94% UKI-SOUTHGRID-OX-HEP 90% 95% 92% 91% 96% 95% P P P 94% P P 92% P P P UKI-SOUTHGRID-OX-HEP P P P P P P P P P P P P P 100% P P 100% P P P100% P P P91% P P P P P P P P P P P cstcdie cstcdie 75% UKI-SOUTHGRID-RALPP 94% 92% 97% 92% 94% 89% P P P 95% P P 89% P P P UKI-SOUTHGRID-RALPP P P P P P P P P P P P P P 100% P P P98% P P 93% P P P93% P P P P P P P P P P P LondonGrid LondonGrid 79% cstcdie 82% 80% 75% 72% 79% 84% P P P 86% P P 86% P P P cstcdie P P P P P P P P P P P P P 100% P P 100% P P P 87% P P P92% P P P P P P P P P P P NorthGrid NorthGrid 74% Total 80% 91% 89% 94% 96% 93% 96% 98% Total 77% 86% 92% 93% ScotGrid ScotGrid 91% 92% 73% 82% 85% 92% 94% 97% 96% SouthGrid SouthGrid 80% The actual 86% tests 91% are 94% currently: 92% 93% 94% 95% 96% The actual tests are currently: CE: CE-sft-job, CE-sft-softver, CE-sft-caver, CE-sft-brokerinfo, CE: CE-sft-job, CE-sft-csh, CE-sft-softver, CE-sft-lcg-rm, CE-sft-caver, CE-host-cert-valid CE-sft-brokerinfo, CE-sft-csh, CE-sft-lcg-rm, CE-h SRMv2: SRMv2-del, SRMv2-get, SRMv2-get-SURLs, SRMv2-gt, SRMv2: SRMv2-host-cert-valid, SRMv2-del, SRMv2-get, SRMv2-ls, SRMv2-get-SURLs, SRMv2-ls-dir, SRMv2-gt, SRMv2-put SRMv2-host-cert-valid, SRM UK SAM Test Results UK SAM Test Results at 29 Jun :15:06 UK SAM Test Results at 29 Jun :15:06 Availability History (csv) Reliability History (csv) History Availability Plots RB History Tests (csv) BDII Reliability Tests LFC History Tests (csv) SAM History Tests Plots FCR RB SE Tests BDII Tests ATLAS Tests ATLAS SAM Tests CMS SAM Tests LHCb ATLAS SAM Tests Tests ATLAS UK Tests SAM Tests Network CMS Tests SAM UK Tests Grid Status LHCb SAM Tests UK Tests Netw Availability is defined by: Availability is defined by: AND the results of each sensor (CE, SE or SRMv2 etc) at a CE AND or SE the results of each sensor (CE, SE or SRMv2 etc) at a CE or SE OR the results for multiple CEs or SEs at a site OR the results for multiple CEs or SEs at a site
21 Tier-2 Productivity Efficiency Atlas Production - site defined assigned waiting activated running holding transferring success failure efficiency! RAL-LCG %! UKI- SCOTGRID % GLASGOW! UKI-LT % QMUL! UKI- NORTHGRID % MAN-HEP! UKI- NORTHGRID % LANCS-HEP! UKI-LT % IC-HEP! UKI-LT % RHUL! UKI- NORTHGRID % LIV-HEP! UKI- SCOTGRID % ECDF! UKI- SOUTHGRID % CAM-HEP! UKI- NORTHGRID % SHEF-HEP! UKI- SOUTHGRID % RALPP! UKI- SOUTHGRID % OX-HEP! UKI- SCOTGRID % DURHAM! UKI-LT % Brunel! UKI- SOUTHGRID % BHAM-HEP! UKI-LT % UCL-HEP total % 94%
22 Tier-2 upgrade plan CPU s to remain stable at 200. Enough spares around to achieve this TB disk servers to be upgraded to 26 TB by swapping out 1 TB disks for 2 TB. Probably in Autumn. Probably need to throw out Workers in months.
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