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1、AMulti-LayeredImageCacheforScienti?cVisualizationEricLaMar?ValerioPascucciLawrenceLivermoreNationalLaboratoryLawrenceLivermoreNationalLaboratoryAbstracttovisualize.Interactivenavigationandexplorationofthesedatasetsisessential,andsmallfeaturescanonlybeprop-Weintroduceamulti-layeredimagecaches
2、ystemthatisde-erlyunderstoodisshowninthecontextoflargerstructures,signedtoworkwithapoolofrenderingenginestofacilitateshowingbothlargescalestructuresandsmallscalefeaturesaframe-less,asynchronousrenderingenvironmentforscien-inthesamevisualizationisessential.However,thedatasizeti?cvisualization
3、.Oursystemdecouplestherenderingfrompreventsef?cientrenderingofevensingleframes,letalonethedisplayofimageryatmanylevels;itdecouplesrendermultipleframeperasecondthatisrequiredforinteractivefrequencyandresolutionfromdisplayfrequencyandreso-exploration.lution;allowsasynchronoustransmissionofimag
4、eryinsteadCachingandreusingimageryoverseveralframestoamor-ofthecompute-sendcycleofstandardparallelsystems;andtizethecostofrenderingthatimageryisprovingtobeaveryallowslocal,incrementalre?nementofimagerywithoutre-usefultechnique.However,priortechniquesareunabletoquiringallimagerytobere-rendere
5、d.meethedemandsofscienti?cvisualizationinthattheyex-Interactivityisaccomplishedbymaintainingasetofim-pectstaticscenes,requiresigni?cantpreprocessingtimeandagetilesfordisplaywhiletheproductionofimageryisper-userassistancetoplaceimpostors,andrelyonpurerandomformedbyapoolofprocessors.Theimageti
6、lesareplacedchancetocatchmovingstructures.in?xedplacesincamera(vs.world)spacetoeliminateoc-Asigni?cantnumberofscienti?cdatasetsareuniform,clusionartifacts.Displayqualityisimprovedbyincreasingcartesiangrids,wheretheinformationdensityisveryhighthenumberofimagetilesandimageryisrefreshedmorefre-
7、anduniform.Thus,tiledensitymustbecorrespondingveryquentlybydecreasingthenumberofimagetiles.highanduniform.Scienti?cvisualizationmethodsrequireuser-controlled,run-timeparametersthatcansigni?cantlyCRCategories:C.2.4[DistributedSystems]:affectvisualiz
