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Optimizing rav1e

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 Barbato, Luca

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Optimizing rav1e
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Effective profiling techniques and optimization strategies
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490
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CC Attribution 2.0 Belgium:
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Abstract
rav1e is a fast AV1 encoder written in rust (and plenty of assembly), released monthly. Since the 0.1.0 release we try to make sure we provide an adequate speed or quality boost compared to the previous. This talk is about what tools are available in the rust ecosystem and what are the practices that worked best for us. The presentation will touch the following topics: - Exploring a codebase and profiling it effectively, both for cpu usage and memory usage. - Which are the optimization strategies that worked for us better (critical path analysis vs peak consumer) - Benchmarking and tracing I'll provide examples on what tools worked well or not so well and what currently I consider the best and most promising tools for each tasks.
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Mathematical optimizationSource codeSoftwareFingerprintCodeMultiplicationConstraint (mathematics)Data storage deviceProcess (computing)Mobile WebMetric systemMaxima and minimaRead-only memoryFrame problemMeasurementMathematicsBenchmarkPersonal digital assistantSemiconductor memoryResource allocationExecution unitNumberSoftwareMultiplication signRight angleResultantProxy serverBitInformation securityCASE <Informatik>StapeldateiGoodness of fitOpen sourceAreaVideoconferencingMeasurementFunctional (mathematics)DatabaseSystem callGraph coloringFrame problemVideo gameForcing (mathematics)Run time (program lifecycle phase)TrailGame controllerCodeBenchmarkMaxima and minimaSingle-precision floating-point formatQuicksortExecution unitNormal (geometry)Insertion lossBit rateProjective planeTask (computing)Heegaard splittingNP-hardFingerprintSource codeMixed realityMathematical optimizationSemiconductor memoryAnalytic continuationPerformance appraisalBefehlsprozessorData compressionMobile WebCodierung <Programmierung>Thread (computing)Metric systemLoop (music)Computer animation
08:03
Metric systemSemiconductor memoryMaxima and minimaResource allocationNumberExecution unitMathematical optimizationFocus (optics)Read-only memoryPersonal digital assistantRepresentation (politics)VideoconferencingFrame problemLogicPairwise comparisonSample (statistics)Codierung <Programmierung>Sampling (statistics)SubsetInformationFlagBinary fileCompilerDifferent (Kate Ryan album)NumberCASE <Informatik>QuicksortSoftware testingMultiplication signSampling (statistics)Point (geometry)VideoconferencingGoodness of fitInformationRight angleFocus (optics)Mixed realityMeasurementINTEGRALCartesian coordinate systemCore dumpResource allocationPhysical systemSource codeCountingUniform resource locatorNP-hardExecution unitProjective planeOperating systemMultiplicationComputing platformRun time (program lifecycle phase)Line (geometry)Prisoner's dilemmaWebsiteProfil (magazine)Semiconductor memoryVirtual machineSound effectSet (mathematics)ResonatorFunction (mathematics)Graph coloringSystem callEquivalence relationArithmetic meanPlanningForcing (mathematics)Metropolitan area networkProcess (computing)BenchmarkMemory managementFile formatCodeChemical equationResultantMathematical analysisMaxima and minimaComputer animation
16:01
Mathematical optimizationMathematicsCodePersonal digital assistantBenchmarkPhysical systemProfil (magazine)BenchmarkINTEGRALNormal (geometry)InformationCASE <Informatik>MereologyCore dumpBitComputer animation
16:58
Process (computing)BenchmarkCodeOrder (biology)Order of magnitudeFunctional (mathematics)Goodness of fitBenchmarkData miningMultiplication signSoftware testingRepresentation (politics)Profil (magazine)Execution unitINTEGRALCodeInformationUnit testingCASE <Informatik>Direction (geometry)Uniform resource locatorLevel (video gaming)Cache (computing)Cartesian coordinate systemQuicksortComputer animation
19:15
InformationMeasurementArmInteractive televisionVarianceVariety (linguistics)System programmingSimilarity (geometry)Graph (mathematics)Presentation of a groupFunction (mathematics)Maxima and minimaThread (computing)BenchmarkExecution unitParallel portTask (computing)Focus (optics)Duality (mathematics)Functional (mathematics)Thread (computing)MeasurementInformationMultiplication signCountingRight angleGraphical user interfaceRun time (program lifecycle phase)INTEGRALData analysisStatisticsProcess (computing)Graph (mathematics)FlagMereologyExplosionSoftware testingMathematical analysisCausalityGraph coloringPhysical systemVirtual machineProfil (magazine)Position operatorSemiconductor memoryGraph (mathematics)Computer fileOpen sourceHypercubeDataflowForcing (mathematics)TheoryCuboidNoise (electronics)CodeBenchmarkParallel portInstallation artVisualization (computer graphics)Goodness of fitRemote Access ServiceWindowComputer animation
25:34
Installation artUsabilityMereologyMultiplication signCodierung <Programmierung>Graphical user interfaceFrame problemCASE <Informatik>TesselationBlock (periodic table)NeuroinformatikDialectSystem callComputer animation
26:23
Installation artNormal (geometry)UsabilitySemiconductor memoryMaxima and minimaInformationRead-only memoryResource allocationDefault (computer science)Computing platformGraphical user interfaceLeakPattern languageCache (computing)Uniform resource locatorSymbol tableMenu (computing)Profil (magazine)TrailRight angleChainCountingInformationFunctional (mathematics)Semiconductor memoryBitShared memoryProcess (computing)Multiplication signPhysical systemWeb 2.0Different (Kate Ryan album)Web pageCASE <Informatik>Scripting languageResultantGravitationGraphics tabletPerturbation theoryError messageTable (information)Buffer solutionComputer animation
31:34
Scripting languageSample (statistics)Server (computing)Read-only memoryChi-squared distributionSession Initiation ProtocolProfil (magazine)Semiconductor memoryQuicksortGraph (mathematics)Multiplication signComputer animation
32:13
FluxSoftware frameworkSoftware testingBenchmarkRead-only memoryStandard deviationBenchmarkSoftware frameworkSoftware testingMathematical analysisCuboidCodeSocial classComputer virusServer (computing)Computer animation
33:18
CodeMetric systemSimilarity (geometry)IterationFunction (mathematics)Ideal (ethics)Axiom of choiceAlgorithmExtension (kinesiology)Mathematical optimizationCache (computing)Principle of localityMultiplicationThread (computing)Process (computing)Compilation albumMathematical optimizationStress (mechanics)Insertion lossMultiplication signSemiconductor memoryTable (information)CASE <Informatik>Right angleLatent heatCartesian coordinate systemInteractive televisionLocal ring2 (number)Source codeGoodness of fitBitCompilerAlgorithmBefehlsprozessorStrategy gameThread (computing)Process (computing)Computer animation
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DisintegrationCodeCoroutineFormal languageCompilerBefehlsprozessorMultiplicationStandard deviationLibrary (computing)Thread (computing)IterationGoodness of fitCodeCompilerTwin primeINTEGRALSingle-precision floating-point formatLibrary (computing)QuicksortBefehlsprozessorLine (geometry)Projective planeExtension (kinesiology)Covering spaceThread (computing)DebuggerWechselseitiger AusschlussPrimitive (album)Boundary value problemDiffuser (automotive)Special unitary groupMetropolitan area networkConnectivity (graph theory)Alphabet (computer science)Formal languageData structureMultiplicationGraph coloringComputer animation
38:34
Block (periodic table)Codierung <Programmierung>MultiplicationLoop (music)CodeConcurrency (computer science)Computer animation
39:20
Loop (music)Codierung <Programmierung>Execution unitCodeBlock (periodic table)MultiplicationConstraint (mathematics)Level (video gaming)Parallel computingType theoryVariable (mathematics)Algebraic closureCodierung <Programmierung>TesselationMathematicsComputer animation
40:00
Read-only memoryAerodynamicsResource allocationBuffer solutionData structureData storage deviceWorkloadCodeSemiconductor memoryHybrid computerSurvival analysisMultiplication signImplementationUniform resource locatorSemiconductor memoryComplex (psychology)Data storage deviceMemory managementSet (mathematics)Queue (abstract data type)Data structureWorkloadQuicksortResultantNumberBuffer solution40 (number)Address spaceVector spaceCodeIterationFront and back endsKernel (computing)Stack (abstract data type)Computer animation
42:45
Resource allocationCodeSemiconductor memoryElectronic data interchangeMetropolitan area networkMultiplication signUniform resource locatorResource allocationComputer animation
43:20
Core dumpWechselseitiger AusschlussCodeCache (computing)Thread (computing)Variable (mathematics)WebsiteLine (geometry)Different (Kate Ryan album)Multiplication signSlide ruleComputer animationLecture/Conference
45:00
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Transcript: English(auto-generated)