CoSADIE Data Centre Forum Summary and conclusions A forum for - - PowerPoint PPT Presentation

CoSADIE DataCentreForum

Summaryandconclusions

• Aforumforthedatacentrecommunity

– “Tellthestory”ofwhattheydoandoftheir relationshipwiththeVO – Knoweachotherbetter – Communitybuilding – CommunicationwiththeEuropean/internationalVO community – Participantswereveryinterestedinpresentingwhat theyaredoing(notonlywithrespecttoVO!)and interestedinlisteningtowhattheothersweresaying – evenanadvertisementforpositions

• Thedatacentrecommunitywhichshowedup

hereisverydiverse,asexpected

– Internationalagencies – InternationalandnationallargeprojectssuchasCTA

• rGranTeCan Calar AltoorGaia

– Smallertelescopes – Institutes(OP,AIP,…) – Specificprojects(surveys,topicalprojects) – Includessolarsystemsciences(planetarysciences, solarandheliospheric physics)(theSunisastar!)and Cerenkovtelescopes

• TheForumdemonstratesthediversityof

approachesandusagesoftheVObydata providers

• Theelementsforthesystemtowork

– ThewillofthedatacentrestoshowupintheVO– theirown willorVOcompulsoryforsomeprojects – Apoliticaldecisiontoopendatafromatelescope/aninstrument – IVOAtogetthestandards – Usableandusefulstandards – Topclassclients– “Commontools”avoiddevelopingyourown tools – Supportofknowledgeableteamsisveryuseful/indispensible – IthelpstohaveanationalVOprojectwhichcanprovidehelp

• DataprovidersshouldenvisagetofollowVOdevelopments

tomakesurethattheyfulfiltheirneedswhentheyarenot wellservedatpresent(multidimensionaldataincluding polarimetry,timedomain,etal)– ormakesurethattheir needsaregatheredbynationalprojects

• Thisparticipationisparticularlyusefulonprovisionofuse

casesandchecksofIVOAproposals

• Interdisciplinaryaspects

– Cerenkovtelescopes,whichareanew“window”of astronomyandoneoftheEuropeanpriorities,arewilling tojoin– discussiontogoon(andinterestingmeetingpoint withparticlephysicsculture)whichwillalsobringinsight toIVOA(e.g.onprovenance,asdiscussedduringyesterday workingdinner) – “Nearby”disciplinessuchasplanetarystudiesand solar/heliospheric physicsAREreusingtheVOframework

• Twoimportantmotivationsforastronomyusersand
• therdisciplines

– Takeadvantageofthehugeamountofintellectual investmentontheIVOAstandards – Takeadvantageoftheclients,whichcanbe complementaryofthedisciplinespecifictools

• “Political”aspects– wrt.Europeanastronomy

– Networking ofEuropeantelescopeswithinacommon strategicframeisoneofAstronet strandsofwork VOroleinthatrespecthastobepointedattothem – Integration intoacommonframework– integrationis alsoastrongkeywordforEC – WorldwidedisseminationofEuropeandata – Topclassclientsgiveaccesstothedataaswellasto thedataofanyothertelescope – Inparticularintegrationofsmallertelescopesinthe European/internationalframeworkandworldwide disseminationoftheirresults

• “Political”aspects– fortheVO

– Tomyknowledgethefirsttimethistypeofmeetingis

• rganisedacrossborders(previousmeetingsin

Europeandelsewhereonspecificsciencetopics) – DatacentrestaffareamongthemostactiveVO developers – ButitisveryimportantfortheVOdeveloperstograsp thewholedatacentrecommunity – Seehowthestandardsareused(ornotused) – Getfeedbackonfunctionalitiesandimplementation andrequirements – Toolsandinteroperabilityoftoolsareveryimportant elements – ImportanttohavetheTCGhere– Thanks,Séverin!

• Technicalaspects

– Registryisacriticalelement– hastobefully maintainedandeasilyusable – DifferentlevelofVOsupportarepossible(the icebergmetaphor)– thinkfirstaboutwhatyou wanttoexposeandaboutthecontextinwhich youwork – CanbeusefultohavetheVOinmindwhen buildinganewsystemorreengineeringan existingone(cf the“intellectualinvestment”put intheVO)

– “SupportObsCore”andhaveyourowndatamodel – UseDataLink:youdecidewhichassociateddatatoprovide – Footprints/MOCs – LibrariesandpublishingtoolkitsneededinPythonandPHPtobemore inclusive,whereasjavaisdominantatpresent.Thisisrequiredtotake intoaccountthedifferentlevelsofexpertiseofusers(datacentresand astronomers).Somealreadyexist(DaCHS). – KeeptrackofVOusagestatisticswhenyoupublishdataintheVO – Howtogatherusecasesfromawiderbase?i.e.howtoengagenew communities – Insomecontextsgetintouchwithyourinformaticsfaculty– keeping inmindthanyouneedoperationalsystems – Sustainabilityanissuefortools,toolkits,etc.Sufficientcontinuous localexpertiseneededtobeadatapublisher – Timedomain:differentcommunitiesareinterested,gatherallthe requirementswillbeimportantforsuccess – Someinstitutionshostotherpeopledata – CataloguescanbeputinVizieR withfullTAPaswellasothertypesof data

• Difficulties

– TheIVOAhasitsownschedulewhichmaynotmatch thedevelopmentscheduleoflargeorganisations– specificsurveysmayhavemoreflexibility. – IVOAhastopublishitsownschedule,splitlarge standardsintomoreeasilymanageablepiecesand provideforeseencompletiondates – AdjustyourstrategytowardstheVOtotheavailable localexpertise – Convincingcommunities:developcompelling examplescanhelp – DMsaimingatfittingeverythingversusbuildingblocks fordatamodelstoallowcommunityspecific extensions?

• Measurementofsuccessofaproject:theamount
• fpeoplenotdirectlyinvolvedwhichhaveused

thedata

• OnthewaytohaveinclusioninVObeingpartof

thenormalbusinessofdatacentres

• Optimumexploitationofyourdatasets
• Archives/databasesashighlydemandedresearch

infrastructures

– MoreaccessthroughVOthanthroughotherways (web,etc.)(Calar Alto,VizieR)

• Fromusingclientstopublishone’sowndata
• VOcanalsobeusedtoshareprivatedata

Whattodonext? HowcanEuroVOsupportthedata centresnowandinthemedium term?

• Themeetinghasbeenuseful

– Organiseregularmeetings

• Yes,thereisaninterestinF2Fmeetings–informationandinspiration
• Howtoreachawidercommunity?Orchooseafocus,anddiscusshowtoreachit
• Towardspeoplepreparingdata?

– Whichcontent?

• Regular“handson”meetings– combinedwith‘forum’

– Interestinhandson+presentations – WouldacceleratetheVOlearningandpublicationprocess – Howtoaccommodatedifferentneeds? – Noendtoendpublishingbutcomponents – Atleastallowsparticipantstolearnthevocabulary – SomepeopleareinterestedinunderstandingtheVO.ExplaintheVO:‘courses’ratherthan handson? – Participants’projects – Precookeddatatomakeexercises? – Warning:installationproblems.Usevirtualmachines? – AVOschoolisnotadatabaseschool

• Includingdiscussionsofspecificpointsofinterest(eg,provenanceyesterdayevening)
• Presentationofapplications?ButnotduplicateIVOA– selection
• Fromtimetotimeameetingsimilartothisoneforexchangeonactivities

– Communitybuilding:Exchangeoftoolsandlessonslearntbetweenthedata centres(Forum!)– notspecifictoVObutuseful.How?Stackexchange platform.Wouldalsobeusedtoorganisemeetings,andtopollthecommunity foritsinterestinhandsonworkshopandtheworkshoporganisationand content

• Otheractions

– Provisionandmaintenanceoftoolkitsandvalidators

• Thisrequiresmanpower

– Provisionandmaintenanceofonlinehelp

• “HowtopublishdataintheVO”intheIVOApages–

commentswelcome

• Regularlyupdatedtutorials
• Informationontools

– Onlinediscussiontools:wiki,forum,mailinglist? ResourcestomaintainaspartofEuroVOexternal presence – Howtosharecodes?Makecodescommunitycodes

• Supportteams– ingeneralnottodothejobforyou

(althoughsomedo)buttogivehelp

– NationalVOprojects– visiblyastrongimpactinbuilding communities(cf thecountryrepartitionoftheworkshop participants) theyneednationalfinancialsupport – ProvidedthroughaEuropeanprojectfortheother countries – PublishingintheVOrequiresasufficientlocalexpertise

• therwisefindanothersolutionthanalocaldissemination

service

• Exchangesbetweennationalprojectstobeorganised

byEuroVO– theyhavedifferentmandatesgivenby theirauthoritiesandhavedifferentkindsofactions– informalgatheringatIVOA?

• AtVOdevelopers‘level(IVOAandVOteams)

– Adjustmentsofexistingstandardsandtoolsand developmentofnewstandardsandtoolstofitthe datacentreneeds – Provisionofimplementationtoolkitsand validators – Theregistryhastowork – Encourageuserstoaskquestions,andtool developerstoanswerandtakethequestionsinto account – Usethequestionstoimprovedocumentation

• Workwithotherdisciplinesoncommonalities

• Thanksforyouractiveparticipation
• Manyelementstokeepinmindforthefuture

assuggestionstoimprovethesituation