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CERN Document Server 2,017 records found  1 - 10próximoend  jump to record: Search took 0.29 seconds. 
1.
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Lxcloud: A prototype for an internal cloud in HEP. Experiences and lessons learned / Goasguen, Sebastien (CERN) ; Moreira, Belmiro (CERN) ; Roche, Ewan (CERN) ; Schwickerath, Ulrich (CERN)
Born out of the desire to virtualize our batch compute farm CERN has developed an internal cloud known as lxcloud. Since December 2010 it has been used to run a small but sufficient part of our batch workload thus allowing operational and development experience to be gained. [...]
2012 - 10 p.

In : Computing in High Energy and Nuclear Physics 2012, New York, NY, USA, 21 - 25 May 2012, pp.032098
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2.
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Benchmarking and accounting for the (private) cloud / Belleman, J (CERN) ; Schwickerath, U (CERN)
During the past two years large parts of the CERN batch farm have been moved to virtual machines running on the CERN internal cloud. During this process a large fraction of the resources, which had previously been used as physical batch worker nodes, were converted into hypervisors. [...]
2015 - 8 p. - Published in : J. Phys.: Conf. Ser. 664 (2015) 022035 IOP Open Access article: PDF;
In : 21st International Conference on Computing in High Energy and Nuclear Physics, Okinawa, Japan, 13 - 17 Apr 2015, pp.022035
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3.
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Docker Containers and Their Emerging Roles in Distributed Applications / GOASGUEN, Sébastien (speaker) (Citrix)
Docker has stormed into the IT landscape recently as a new abstraction for linux containers. Its ease of use is set to revolutionize the way we package applications, share and deploy them on compute clusters [...]
2015 - 3200. General; CernVM Users Workshop External links: Talk details; Event details In : CernVM Users Workshop
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4.
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 LSF usage for batch at CERN
Reference: Poster-2007-004
Keywords:  Poster  CHEP07  LSF  Batchsystem
Created: 2007. -1 p
Creator(s): Schwickerath, Ulrich

Contributed poster to the CHEP07. Original abstract: LSF 7, the latest version of Platform's batch workload management system, addresses many issues which limited the ability of LSF 6.1 to support large scale batch farms, such as the lxbatch service at CERN. In this paper we will present the status of the evaluation and deployment of LSF 7 at CERN, including issues concerning the integration of LSF 7 with the gLite grid middleware suite and, in particular, the steps taken to endure an efficient reporting of the local batch system status and usage to the Grid Information System

Related links:
CHEP 07 		© CERN Geneva

Fulltext
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5.
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Openstack 101 / RODRIGUES MOREIRA, Belmiro (speaker) (CERN)
Summary: “OpenStack is a collection of open source projects that provides an operating platform for orchestrating clouds in a massively scalable way.” Since July 2013 CERN is running OpenStack in production allowing and helping users to build scalable and reliable applications. This tutorial will show how to use the OpenStack main functionality from a user point of view, some best practices and tricks. It is expected that you are already familiar with OpenStack projects and have subscribed the service. About the speaker: Belmiro Moreira is an enthusiastic software engineer passionate about the challenges and complexities of architecting and deploying Cloud Infrastructures in very large-scale environments. He works at CERN and during the last three years his main role was to design, develop and build the CERN Cloud Infrastructure based on Openstack. [...]
2014 - 3736. IT Technical Forum (ITTF); Openstack 101 External links: Talk details; Event details In : Openstack 101
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6.
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Batch efficiency / Schwickerath, U (CERN) ; Da Silva, R (CERN) ; Uria, C (CERN)
A frequent source of concern for resource providers is the efficient use of computing resources in their centers. This has a direct impact on requests for new resources. [...]
CERN-IT-Note-2009-014.- Geneva : CERN, 2010 - 5 p. - Published in : J. Phys.: Conf. Ser. 219 (2010) 072052 Access to fulltext: PDF;
In : 17th International Conference on Computing in High Energy and Nuclear Physics, Prague, Czech Republic, 21 - 27 Mar 2009, pp.072052
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7.
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The machine/job features mechanism / Alef, M (KIT, Karlsruhe) ; Cass, T (CERN) ; Keijser, J J (NIKHEF, Amsterdam) ; McNab, A (Manchester U.) ; Roiser, S (CERN) ; Schwickerath, U (CERN) ; Sfiligoi, I (Fermilab)
Within the HEPiX virtualization group and the Worldwide LHC Computing Grid’s Machine/Job Features Task Force, a mechanism has been developed which provides access to detailed information about the current host and the current job to the job itself. This allows user payloads to access meta information, independent of the current batch system or virtual machine model. [...]
2017 - 4 p. - Published in : J. Phys.: Conf. Ser. 898 (2017) 092032 Fulltext: PDF;
In : 22nd International Conference on Computing in High Energy and Nuclear Physics, CHEP 2016, San Francisco, Usa, 10 - 14 Oct 2016, pp.092032
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Lecture 4: Cloud Computing in Large Computer Centers / Rodrigues Moreira, Belmiro (speaker) (CERN)
In the past few years Cloud Computing moved from buzzword to a disruptive computing model reshaping all IT landscape. The question today is not “why Cloud Computing?” but how don’t get left behind if not in the Cloud. Cloud Computing is a paradigm shift that changed the way computer centers are managed, business operates, applications are written and users interact with devices, services and applications. During the last 2 years CERN also built its own Cloud infrastructure using leading open source tools that is helping scientists around the world to uncover the mysteries of the Universe. This lecture will introduce Cloud Computing concepts identifying and analyzing its characteristics, models, and applications [...]
2013 - 4010. CERN openlab Summer Student programme 2013 External link: Event details In : Lecture 4: Cloud Computing in Large Computer Centers
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Exploiting Virtualization and Cloud Computing in ATLAS / Barreiro Megino, Fernando Harald (speaker) (CERN IT ES)
The ATLAS Computing Model was designed around the concepts of grid computing; since the start of data-taking, this model has proven very successful in the federated operation of more than one hundred Worldwide LHC Computing Grid (WLCG) sites for offline data distribution, storage, processing and analysis. However, new paradigms in computing, namely virtualization and cloud computing, present improved strategies for managing and provisioning IT resources that could allow ATLAS to more flexibly adapt and scale its storage and processing workloads on varied underlying resources. [...]
2012 - 1318. Conferences; Computing in High Energy and Nuclear Physics (CHEP) 2012 External links: Talk details; Event details In : Computing in High Energy and Nuclear Physics (CHEP) 2012
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10.
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Usage of LSF for batch farms at CERN / Schwickerath, Ulrich (CERN) ; Lefebure, Veronique (CERN) /FIO
CERN uses Platforms Load Sharing Facility (LSF) since 1998 to manage the large batch system installations. Since that time, the farm has increased significantly, and commodity based hardware running GNU/Linux has replaced other Unix flavors on specialized hardware. [...]
CERN-IT-Note-2007-018.- Geneva : CERN, 2008 - 6 p. - Published in : J. Phys.: Conf. Ser. 119 (2008) 042025 Access to fulltext: PDF;
In : International Conference on Computing in High Energy and Nuclear Physics, Victoria, Canada, 2 - 7 Sep 2007, pp.042025
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