infso-ri-508833 enabling grids for e-science user survey objectives and results f.jacq cnrs-in2p3...
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INFSO-RI-508833
Enabling Grids for E-sciencE
www.eu-egee.org
User Survey Objectives and Results
F.Jacq CNRS-IN2P3EGEE Conference - Athens 21th April 2005
User Survey:Objectives and results 2
Enabling Grids for E-sciencE
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User Survey : Objectives
• To evaluate user satisfaction for milestone MNA4.3. This is a specific request of the reviewers.
• User Survey Content– Parameters for survey analysis : User identification, User and
application profile
– User satisfaction : Benefits in using EGEE, Quality of the grid, Quality of the user support, Quality of the documentation
• User Survey available on line : http://egee-na4.ct.infn.it/egee-survey-form/
User Survey:Objectives and results 3
Enabling Grids for E-sciencE
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The population of users
• What was the target ?– All users of the grid were invited to fill the user survey– E-mail to mailing list community : Biomed and Generics– We have also some reply of dteam members, infngrid (word of
mouth ! )
• Expectations of reply– Biomed Community : estimation of 35 active users– Generics Community : estimation of 40 active users
User Survey:Objectives and results 4
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Global Results : User identification (1/2)
• 39 Replies with 33 from Biomed and Generics : Who are they ?
•NA4 application management
•NA4 user support
• Dteam members (Test team, End User Support, Site Administrator)
Response Rate of Biomed 63%
Response Rate of Generics 27%
User Survey:Objectives and results 5
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Global Results : User identification (2/2)
• How do they use the grid ?– Writing application themselves : 94 %– Launching jobs themselves : 86 %– Using Genius : 18 % (induced by the low replies of generics
application)– They launch jobs per month :
Average : 170 Minimum : 1 Maximum : 1200 Duration of a job :
User Survey:Objectives and results 6
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Global Results : Application Profile
• What is the specificity of their application ? :
Parallel Job
Interactivity
Resource requirement
User Survey:Objectives and results 7
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Service Grid Satisfaction
• Global Satisfaction with use of grid
Estimated of jobs failure : 18%
•46%
•46%
User Survey:Objectives and results 8
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User Support Satisfaction
•67%•62%
•72%
=> Quality Support good satisfaction for > 65 %
• Global Satisfaction of the user support
User Survey:Objectives and results 9
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• Global Satisfaction of the documentation
Documentation Satisfaction
=> Except System manual documentation, the satisfaction is intermediate
•33% •33%
•63%
•30% •27%
User Survey:Objectives and results 10
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Users Expectations
• Users are mainly waiting for :
User Survey:Objectives and results 11
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Grid added value
• Is it possible to do the same work without EGEE ?
• Real Benefits of functionality with EGEE : – Job management : Resource broker, reduction of execution time for a
large number of jobs, requirements attributes– Pervasive and transparent access to large scale and distributed resources– Data management : registration, file access, virtualization of storage– Secure environment
User Survey:Objectives and results 12
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Improvement of EGEE• Major requirements for EGEE improvement:
– Stability : Resources, nodes, RB, RM
– Job management : Collection of jobs System priority of jobs Automatic management of thousands jobs Reduction of the waiting time Capability to "chain" RBs and then suppress SPOF
– Data management : Shared file Avoid the files and space number limitations on nodes Management of Relational DataBases
– Security : Data, jobs and users, Secure access to external (meta-) databases, Fine granular security, ACLs
– MPI on more sites support for MPI-based parallel execution
– Integrated and standard debugging facilities for all commands
– Co allocation of CPUs for interactive jobs
User Survey:Objectives and results 13
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Conclusions and Roadmap
• Conclusions– Satisfaction
Support : quite good Grid Service : intermediate satisfaction Documentation : has to be improved
– Diversity of applications => complexities, benefits and requirements are heteroclites.
• Roadmap– Improvement of the user survey– HEP community
User Survey:Objectives and results 14
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Credits
• Marcel Soberman (JRA2) : Contribution to the conception of the user survey
• Emidio Gorgio (NA3/NA4) : Developer of the PHP form and of the database for statistics.
• All people who participated in the conception and the testing of the user survey
• All people who incited users to fill the user survey.
User Survey:Objectives and results 15
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Format User Survey : Parameters
User Survey:Objectives and results 16
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Format User Survey : Satisfaction
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