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<!-- keep this as a security measure: * Set ALLOWTOPICCHANGE =<span data-mce-mark="1"> Main.TWikiAdminGroup,Main.LCGAdminGroup</span> * Set ALLOWTOPICRENAME =<span data-mce-mark="1"> Main.TWikiAdminGroup,Main.LCGAdminGroup #uncomment this if you want the page only be viewable by the internal people #* Set ALLOWTOPICVIEW = Main.TWikiAdminGroup,Main.LCGAdminGroup</span> --> <img alt="lhconcray_services_201910.png" height="1056" src="%ATTACHURL%/lhconcray_services_201910.png" title="lhconcray_services_201910.png" width="1642" /> %TOC% ---+ Specifications, standard Benchmark values A summary of the resources CSCS is pledged to deliver in April 2021 as agreed with the CHIPP Computing Board: | *Resource* | *Provided* | *Pledged 2021* | *Notes* | | Computing (HS06) | 220224 | 198000 | 74k ATLAS, 68k CMS, 56k LHCb | | Storage (TB) | 6155 | 6155 | 2574 ATLAS, 2490 CMS, 1091 LHCb | Please note: * They are calculated using projections from the RRB (resource review board) and agreed with SNF. * Above resources differ from CRIC due to a misunderstanding. This was clarified with the WLCG office in November 2020. * The extension of the foreseen storage capacity was not available until July'21 due to problems in the chip supply chain. ---++ CPU HS06 = HEP-SPEC06 benchmark value (see details in [[http://w3.hepix.org/benchmarks/doku.php/][HEP-SPEC06 webpage]]) (Note: 1 HS06 = 1 GFlop, approximately) Pledge compute capacity is 10% lower due to various inefficiencies. %STARTSECTION{name="Cpu" type="section"}% %TABLE{caption="CSCS Tier-2 LCGonCray CPU counts and performance benchmarks"}% | *Nodes* | *Description* | *Processors* | *Cores/node* | *Total cores* | *HS06/core* | *Total HS06* | *RAM/core* | | 172 | Xeon E5-2695 v4 @ 2.10GHz | | 68 | 11696 | 12.45 | 145615 | 2 GB | | | Total | | | <span data-mce-mark="1">%CALC{"$SUM($ABOVE())"}%</span> | | <span data-mce-mark="1">%CALC{"$SUM($ABOVE())"}%</span> | | Intel® Xeon E5-2695 v4 @ 2.10GHz %ENDSECTION{name="Cpu" type="section"}% These CPU resources are divided among the VOs with fairshare (data taken from the last week of usage) and a few reserved slots (for exclusive usage): * ATLAS: 40% fairshare (max of 2000 jobs running, 4000 in queue). * CMS: 40% fairshare (max of 2000 jobs running, 4000 in queue). * LHCb: 20% fairshare (max of 1500 jobs running, 4000 in queue). _Last update: August 2018_ ---++ Storage infrastructure ---+++ Central Storage - dCache The dCache services are provided by 12 servers (10 "Storage Elements" and 2 "Head Nodes") <br />Storage Elements are connected to the storage systems through the CSCS SAN Total space available on dCache is<b> 4.6 PB</b> and is distributed in <b>40% - 40% - 20% </b>(ATLAS/CMS/LHCb) fashion. _Last update: November 2019_ ---+++ Scratch - Spectrum Scale The 'scratch' filesystem is available to Compute nodes through special DVS nodes and is provided by a Spectrum Scale cluster of 16 nodes (4 meta + 12 data). Metedata is located on Flash Storage The filesystem is featuring a policy based pool tiering<br />Tier1: SSD based data pool (90TB) where all files are written <br />Tier2: HDD based data pool (380TB) where less frequently used data is moved (this mechanism is transparent for the clients) _%BLACK%Last update: <i>November 2019</i><br />%ENDCOLOR%_ ---++ Network connectivity ---+++ External network CSCS has a redundant 100Gbit/s connection (provided by SWITCH). LHConCray computing resources, storage and all related services are connected to the Internet with many high speed interfaces.<br /><br /> ---++ Cluster Management Nodes Most of the service nodes are virtualized. To see a complete list please visit the FabricInventory#Virtual_Machines Individual services are described in ServiceInformation
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