HEPiX report Spring 2016 HEPiX meeting DESY Zeuthen (Berlin), Germany Helge Meinhard, CERN-IT Grid Deployment Board 11-May Helge Meinhard (at) CERN.ch

HEPiX report HEPiX Global organisation of service managers and support staff providing computing facilities for HEP community Most WLCG sites, including WLCG Tier-0, Tier-1 and many Tier-2, represented Other communities increasingly interested Meetings are held twice per year - Thus far: spring in Europe, autumn in North America or Asia – being revised Reports on status and recent work, work in progress & future plans - Usually no showing-off, honest exchange of experiences (Re-juvenated) Web site: 11-May-2016 Helge Meinhard (at) CERN.ch3

HEPiX report HEPiX Spring 2016 Held 18 – 22 April at DESY Zeuthen (near Berlin) Sponsors: Western Digital, Univa, IBM, Dell 119 registered participants - Many first timers, many old friends - 84 from Europe, 12 from North America, 11 from Asia, 12 from eight companies - 36 different affiliations - Participants from photon science, life science, … 70 contributions - Slots cut down to 25 mins - Proof of ‘HEPiX unitarity principle’ Benchmarking working group re-launch BoF on monitoring Full details: Extensive workshop notes in preparation 11-May-2016 Helge Meinhard (at) CERN.ch4

HEPiX report 11-May-2016 Helge Meinhard (at) CERN.ch5

HEPiX report Group Photo 11-May-2016 Helge Meinhard (at) CERN.ch6

HEPiX report HEPiX: 25 Years 11-May-2016 Helge Meinhard (at) CERN.ch7

HEPiX report Tracks and Trends… (1) Site reports – 15 contributions - Lustre (very popular among sites), CEPH, Slurm for HPC oriented computing, IPv6, SDN, orchestration (Kubernetes, Mesos), HTCondor, Puppet & companion softwares, HTCondorCE (nice trend, might replace other CE flavors at some point?...), ELK, Jenkins, GitLab, ZFS, … Security and networking: 7 contributions - Security: As scary as ever! Threat landscape continues to evolve - Aim to support users check for security issues (IHEP); KEK CSIRT - Identity federations: Lots of activity in AARC, REFEDS, FIM4R, WLCG - Networking: Activities in IPv6 and network monitoring/measurement (perfSONAR in WLCG/OSG) - Enabling dual-stack IPv4/IPv6 perfSONAR still a good starting point for sites - Aiming to support IPv6-only CPU in IHEP - interesting attempt to do network path optimisation with SDN 11-May-2016 Helge Meinhard (at) CERN.ch8

HEPiX report Tracks and Trends… (2) Storage and file systems: 12 contributions - Several sites looking for a new place for $HOME. Various solutions being discussed (local+backup, sync services, alternative distributed file systems,...) - Future of OpenAFS worrying. Nothing unsurmountable, but in particular the Linux area needs some efforts to keep up with recent kernels and currently there are no resources in sight. - After being well established for its traditional use cases, Ceph starts to grow more into use cases closer to physics data. And due to its flexibility may also form the basis of project to allow for easier access to data, such as OSIRiS. Grids/clouds: 10 contributions - Reports of success bringing virtualisation overhead down to low single figures - Containers - many sites investigating, the range of use cases, range of approaches to orchestration 11-May-2016 Helge Meinhard (at) CERN.ch9

HEPiX report Tracks and Trends… (3) End-user IT services and operating systems: 3 contributions - Scientific Linux - Printing Services at CERN: Consolidate, standardise, simplify - Linux on Desktops at DESY Computing and batch systems: 6 contributions - Barcelona workshop on HTCondor was a great success, much information - DESY has plans to use HTCondor, CERN has a project to extend batch services into the public cloud - Life science with similar requirements as HEP, cooperation highly wanted - HS06 benchmarking does not always reflect the true efficiency for important applications and specific architectures - A relaunch of the HEPiX Benchmarking Working Group took place on Thursday, first focus on fast benchmarks - Power efficiency on ARM is at least 2x better than for Intel/AMD, but has still problems (cores/system etc); for conventional architectures Intel is leading in terms HS06/Watt 11-May-2016 Helge Meinhard (at) CERN.ch10

HEPiX report Tracks and Trends… (4) IT facilities and business continuity: 6 contributions - Monitoring: desire to combine and correlate system and environment data - BNL is consolidating scientific computing and looking to build a new building - DESY is updating its infrastructure to be able to cope with additional capacity needs and to improve the efficiency - GreenITCube: building, migration of systems, monitoring Basic IT services: 7 contributions - Secure use of ELK - Rundeck experience at CERN - Experience with 4.5 years of Chef at GSI - Running a data centre with 8-year old nodes - Monitoring challenges and solutions 11-May-2016 Helge Meinhard (at) CERN.ch11

HEPiX report Next meetings Autumn/Fall 2016: Lawrence Berkeley National Lab, CA, U.S.A – 21 October 2016 (week after WLCG workshop and CHEP in San Francisco) Spring 2017: Budapest, Hungary - 24 – 28 April 2017 Autumn/Fall 2017: KEK, Tsukuba, Japan - 16 – 20 October 2017 Proposals received for subsequent meetings Will need to re-consider swap of European/N-American meeting, Asian labs becoming important contributors to HEPiX Expressions of interest and proposals are always welcome 11-May-2016 Helge Meinhard (at) CERN.ch12

HEPiX report Questions? 11-May-2016 Helge Meinhard (at) CERN.ch13