summary of track 6 facilities, production infrastructures, networking, collaborative tools
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Summary of Track 6 Facilities, Production Infrastructures, Networking, Collaborative Tools. Track 6 conveners, presented by Helge Meinhard / CERN-IT 18 October 2013. Track 6 Conveners. Brian Bockelman Ian Collier Alessandro De Salvo Maria Girone Steven Goldfarb Burt Holzman - PowerPoint PPT PresentationTRANSCRIPT
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Track 6 summary 1
Summary of Track 6Facilities, Production Infrastructures, Networking, Collaborative Tools
Track 6 conveners, presented byHelge Meinhard / CERN-IT
18 October 2013
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Track 6 Conveners• Brian Bockelman• Ian Collier• Alessandro De Salvo• Maria Girone• Steven Goldfarb• Burt Holzman• Helge Meinhard• Ray Pasetes• Wim Heubers (LOC)
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Usual disclaimer• Credit to presenters and session chairs• All errors, omissions, … are mine• Posters not covered – sorry
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Statistics• 83 abstracts; 81 accepted, 2 withdrawn• 28 oral presentations, 53 posters
Topic No contributionsFacilities 6
Production infrastructures 50
Networking 15
Collaborative tools 10
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Facilities
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Arduino and Nagios integration for monitoring (Victor Fernandez, U Santiago de Compostela)
• Aim: address monitoring needs of their compute farm
• Chose home-made integration of Arduino and Nagios for cost reasons
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Fernandez, U Santiago de Compostela
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SynapSense wireless environmental monitoring system of RACF at BNL (Alexandr Zaytsev, BNL)
• Environmental monitoring needed that is easy to install – no complex wiring
• SynapSense: wireless sensors
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Zaytsev, BNL
9
In the present configuration the system has 150+ base stations provided with 520+ low systematic temperature/humidity/pressure sensors reporting to the central servers every 5 minutes (0.27M readings per day)
The integral cost of the system is not exceeding the cost of 2 racks of equipment typical for RACF Linux farms
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Operating dedicated data centres – is it cost-effective? (Tony Wong, BNL)
• Cost comparison of BNL facilities with commercial cloud offerings (EC2, GCE)
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Wong, BNL
• Cost of computing/core at dedicated data centers compare favorably with cloud costs– $0.04/hr (RACF) vs. $0.12/hr (EC2)– Near-term trends
• Hardware• Infrastructure • Staff • Data duplication
• Data duplication requirements will raise costs and complexity – not a free ride
Includes 2009-2013 dataBNL-imposed overhead includedAmortize server and network over 4 or 6 (USATLAS/RHIC) years and use only physical coresRACF Compute Cluster staffed by 4 FTE ($200k/FTE)About 25-31% contribution from other-than-server
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Hardware at remote hosting centre (Olof Barring, CERN)
• Wigner research centre in Hungary won open call for tender for extending CERN’s computer centre capacity
• Issues around scalability and non-availability of physical access addressed
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Barring, CERN
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Barring, CERN
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Production Infrastructures
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ATLAS cloud computing R&D project (Randy Sobie, U Victoria)
• Private / academic clouds – HLT farm• Public / hybrid clouds: Amazon EC2, Google
compute engine• CloudScheduler as “middleware” between
HTCondor and cloud
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Sobie, U Victoria
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Fabric management (r)evolution at CERN (Gavin McCance, CERN)
• Agile Infrastructure project addressing- virtual server provisioning- configuration- monitoring
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McCance, CERN
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McCance, CERN
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McCance, CERN
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Production large-scale cloud infrastructure experience at CERN (Belmiro Moreira, CERN)
• Motivation: Improve- operational efficiency- resource efficiency- responsiveness
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Moreira, CERN
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Moreira, CERN
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Moreira, CERN
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Agile Infrastructure monitoring (Pedro Andrade, CERN)
• Motivation- Several independent monitoring activities in CERN IT- Combination of data from different groups necessary- Understanding performance became more important- Move to a virtualised dynamic infrastructure
• Challenges- Implement a shared architecture and common tool-
chain- Delivered under a common collaborative effort
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Andrade, CERN
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Andrade, CERN
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Andrade, CERN
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The CMS openstack, opportunate, overlay, online-cluster cloud (Jose Antonio Coarasa, CERN)
• Idea: Reuse CMS Data Acquistion System as an opportunistic Open-Stack based cloud.
• A cloud of opportunity - when CMS is not taking data, give computing power of HLT to Offline. Online must be able to "take back" computing resources quickly.
• Overlays on top of existing cluster; OpenStack must deal with existing complex network configuration.
• Cloud has been running since January 2013.• Has run up to 6,000 jobs at a time; a significant
resource in CMS Offline.
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Track 6 summary
High availability setup; complex networking due to required Online security!
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Track 6 summary
Opportunistic resource usage in CMS (Peter Kreuzer, RWTH Aachen)
• CMS has a relatively flat funding budget for hardware.
- CMS can keep its hardware fully occupied. Investment in people greater than investment in computing hardware. Must keep people productive!
- Goal: Allow people to dynamically integrate shared resources.
• Three types of resource access considered
• Non-CMS grid site, opportunistic or Allocation-based cluster (no grid interface), or Virtualization-based resources (OpenStack, EC2).
• Operational issues - how does CMS integrate temporary resources into a system designed for permanent resources?
- Either put all resources into a "fake" site or dedicated site for very large opportunistic resources.
- Testing already done at large-scale; sustainable operations is the current challenge.
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Operating the World-wide LHC computing grid (Andrea Sciaba, CERN)
• Dedicated effort as a follow-up from Technical Evolution groups in 2011/2012
• Activity resulted in a series of recommendations to be followed up by a new, dedicated coordination body
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Sciaba, CERN
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Sciaba, CERN
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Testing as a service with HammerCloud (Ramon Medrano Llamas, CERN)
• Large-scale flexible grid testing increasingly important and popular
• 50 M jobs / year• Requires flexible infrastructure for rapid
deployment
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Medrano Llamas, CERN
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Medrano Llamas, CERN
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Medrano Llamas, CERN
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Performance monitoring of ALICE DAQ system with Zabbix (Adriana Telesca, CERN)
• Growing DAQ farm requires more flexible, powerful system monitoring
• Comprehensive study of candidate systems has resulted in choosing Zabbix
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Telesca, CERN
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Telesca, CERN
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Telesca, CERN
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Beyond core count: new mainstream computing platforms for HEP workloads (Pawel Szostek, CERN)
• Improvements of performance and performance/watt by- Increasing core counts- Shrinking structure sizes- Introducing new microarchitectures
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Szostek, CERN
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Szostek, CERN
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The effect of flashcache and bcache on I/O performance (Jason Alexander Smith, BNL)
• Flashcache, bcache: Linux kernel modules for block caching of disk data on fast devices (such as SSDs)
• Flashcache- Developed by Facebook in 2010- Not included in Linux kernel
• Bcache: different approach with similar goals- In Linux kernel as of 3.10
• Result: good for small records/files
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Smith, BNL
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Smith, BNL
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Challenging data and workload management in CMS computing with network-aware systems (Tony Wildish, Princeton)
• PhEDEx controls bulk data-flows in CMS.
- Basic architecture is 10 years old. Retry algorithms are TCP-like (rapid backoff / gentle retries). No understanding of the underlying network activity.
- Complex transfer mesh -- since it no longer follows the MONARC model, we no longer have an analytic model of CMS transfers. Why are datasets moved? Which movements are correlated?
• Working on long-term use cases and models for integrating network knowledge:
- ANSE project working to integrate virtual network circuit control into PhEDEx. Explicitly control the networks.
- Hope is that this will reduce latencies in PhEDEx.
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Wildish, Princeton
Not currently bandwidth-limited, but preparing for
the future!
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Networking
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Deployment of PerfSONAR-PS networking monitoring in WLCG(Simone Campana, CERN)
• Introduction to PerfSONAR and PerfSONAR-PS
• Deployment plan for WLCG• Status
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Campana, CERN
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Campana, CERN
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Campana, CERN
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Big data over a 100G network at Fermilab (Gabriele Garzoglio, FNAL)
• One of our remote presentations• Goal: verify whole stack of software and
services end-to-end for effectiveness at 100G across participating labs
• Results on GridFTP/SRM/GlobusOnline, xrootd, squid/Frontier
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Garzoglio, FNAL
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Garzoglio, FNAL
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Garzoglio, FNAL
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Garzoglio, FNAL
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Network architecture and IPv6 deployment at CERN (David Gutierrez Rueda, CERN)
• Core network interconnecting all infrastructure, including Wigner, is IPv6 ready- Non-blocking 1 Tbps
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Gutierrez Rueda, CERN
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Gutierrez Rueda, CERN
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Gutierrez Rueda, CERN
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Application performance evaluation and recommendations for the DYNES instrument (Shawn McKee, U Michigan)
• DYNES is a “distributed instrument” in the US: has networking infrastructure at ~40 universities for creating virtual circuits.
• Solving a mystery: When creating circuits 1Gbps, they were getting 200Mbps performance.
- Traditional network debugging techniques yielded nothing.
- Solution: Using the Linux outgoing packet queue management layer to pace packets on the host at less than the circuit speed. Yielded >800 Mbps.
- Belief the issue is QoS in the internal implementation of one hop in the circuit is at fault.
• Lesson: Virtual circuits still depend heavily on the underlying hardware implementation. The “virtualization” is perhaps not a complete extraction. You must know your circuit!
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McKee, U Michigan
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WLCG security: a trust framework for security collaboration among infrastructures (David Kelsey, STFC-RAL)
• All about trust of infrastructures• Building on experience with
EDG/EGEE/EGI, OSG, WLCG
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Kelsey, STFC-RAL (1)
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GPU-based network traffic monitoring and analysis tools (Phil DeMar, FNAL)
• Another remote presentation• 10G common in servers, 40G and 100G
coming on backbones• Current flow- and traffic-based tools will
break down
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DeMar, FNAL (1)
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US LHC Tier-1 WAN data movement security architectures (Phil DeMar, FNAL)
• Remote again…• Both FNAL and BNL chose to separate
science data movements from general network traffic
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DeMar, FNAL (2)
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WLCG and IPv6: The HEPiX IPv6 working group (David Kelsey, STFC-RAL)
• IPv4 address depletion coming soon…• Network infrastructures increasingly ready
for IPv6• Many services not yet tested, much work to
be done still
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Kelsey, STFC-RAL (2)
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Collaborative Tools
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Indico 1.0+ (Jose Benito Gonzalez Lopez, CERN)
• Remarkable growth, very popular service• Added user dashboard, version optimised
for mobile devices, …• Coming: rich abstract editor, configurable
registration form, e-ticket, off-line web site
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Gonzalez Lopez, CERN
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Gonzalez Lopez, CERN
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Vidyo for the LHC (Thomas Baron, CERN)
• In production since December 2011• Strong points for CERN
- Multiplatform capabilities• Not only desktops but extension to mobiles and tablets
- Integration with H323/SIP protocols- Extensible (several hundreds in a single meeting)- Natural interactions
• very low latency and excellent lip sync - Good A/V quality and resilience/adaptability to poor
network conditions- Simple interface- Good integration possibilities
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Baron, CERN
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Scholarly literature and the press: scientific impact and social
perception of physics computing M. G. Pia1, T. Basaglia2, Z. W. Bell3, P. V. Dressendorfer4
IEEE NSS 2013Seoul, Korea
1INFN Genova, Genova, Italy2CERN, Geneva, Switzerland3ORNL, Oak Ridge, TN, USA4IEEE, Piscataway, NJ, USA
CHEP 2013Amsterdam
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Pia / INFN Genova
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Setting up collaborative tools for a 1000-member community (Dirk Hoffmann, CPPM)
• Cta: Collaboration without support of a strong institute
• Had to set up basic services themselve
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Hoffmann, CPPM
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Final Words from Track 6THANK YOU
• to all speakers and poster presentersfor many interesting contributions
• to all attendees to the sessionsfor their interest and for lively discussions
• to my fellow convenersfor a smooth sailing of the track,and for their input to this summary
• to the organisersfor a great CHEP 2013!
SEE YOU IN …