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Describe the bug 🐞
If I specify saveat, the ARKODE() solver includes the start and endpoints of tspan.
saveat
Expected behavior
The Tsit5() and other solvers I've tried do not include the start and endpoints when specifying saveat.
Minimal Reproducible Example 👇
using DifferentialEquations using LinearAlgebra # Define Lotka-Volterra model. function lotka_volterra(du, u, p, t) # Model parameters. α, β, γ, δ = p # Current state. x, y = u # Evaluate differential equations. du[1] = (α - β * y) * x # prey du[2] = (δ * x - γ) * y # predator return nothing end # Define initial-value problem. u0 = [1.0, 1.0] p = [1.5, 1.0, 3.0, 1.0] tspan = (0.0, -20.0) prob = ODEProblem(lotka_volterra, u0, tspan, p) sol_tsi = solve(prob, Tsit5()) sol_tsi_sa = solve(prob, Tsit5(), saveat = [-5, -10]) # saves ONLY -5 and -10 using Sundials sol_ark = solve(prob, ARKODE()) sol_ark_sa = solve(prob, ARKODE(), saveat=[-5, -10]) # <===== the issue # saves these + tspan = [0.0, -5.0, -10.0, -20.0]!? # seems like this relies on save_start and save_end somehow? sol_bdf = solve(prob, CVODE_BDF()) sol_bdf_sa = solve(prob, CVODE_BDF(), saveat=[-5, -10]) # saves ONLY -5, -10 sol_adams = solve(prob, CVODE_Adams()) sol_adams_sa = solve(prob, CVODE_Adams(), saveat = [-5, -10]) # saves ONLY -5, -10
Environment (please complete the following information):
using Pkg; Pkg.status()
(@v1.10) pkg> st Status `~/.julia/environments/v1.10/Project.toml` [cbdf2221] AlgebraOfGraphics v0.8.11 [39de3d68] AxisArrays v0.4.7 [6e4b80f9] BenchmarkTools v1.5.0 [336ed68f] CSV v0.10.14 [13f3f980] CairoMakie v0.12.12 [f68482b8] Cthulhu v2.15.1 [717857b8] DSP v0.7.10 [a93c6f00] DataFrames v1.7.0 [1313f7d8] DataFramesMeta v0.15.3 [82cc6244] DataInterpolations v6.4.1 ⌅ [459566f4] DiffEqCallbacks v3.9.1 [0c46a032] DifferentialEquations v7.14.0 [31c24e10] Distributions v0.25.112 [61744808] DynamicalSystems v3.3.22 [b2ad6718] EmacsVterm v0.3.0 [cc61a311] FLoops v0.2.2 [1a297f60] FillArrays v1.13.0 [38e38edf] GLM v1.9.0 [e9467ef8] GLMakie v0.10.12 [db073c08] GeoMakie v0.7.4 [a98d9a8b] Interpolations v0.15.1 [4138dd39] JLD v0.13.5 [033835bb] JLD2 v0.5.4 [92481ed7] LinearRegression v0.2.1 [fc60dff9] LombScargle v1.0.3 [c7f686f2] MCMCChains v6.0.6 ⌃ [961ee093] ModelingToolkit v9.33.1 [16a59e39] ModelingToolkitStandardLibrary v2.14.0 [86f7a689] NamedArrays v0.10.3 [436b0209] NaturalEarth v0.1.0 [1dea7af3] OrdinaryDiffEq v6.89.0 [65888b18] ParameterizedFunctions v5.17.0 [14b8a8f1] PkgTemplates v0.7.52 [91a5bcdd] Plots v1.40.8 [c3e4b0f8] Pluto v0.19.46 [d236fae5] PreallocationTools v0.4.24 [c46f51b8] ProfileView v1.8.0 [49802e3a] ProgressBars v1.5.1 [33c8b6b6] ProgressLogging v0.1.4 [6f49c342] RCall v0.14.6 [295af30f] Revise v3.6.0 [1277b4bf] ShiftedArrays v2.0.0 [11a47235] SignalDecomposition v1.1.0 [a8a75453] StatProfilerHTML v1.6.0 [90137ffa] StaticArrays v1.9.7 [2913bbd2] StatsBase v0.34.3 [f3b207a7] StatsPlots v0.15.7 [220ca800] StructuralIdentifiability v0.5.9 ⌃ [c3572dad] Sundials v4.20.1 [fd094767] Suppressor v0.2.8 [5d786b92] TerminalLoggers v0.1.7 [f0413319] Tidier v1.4.0 ⌅ [337ecbd1] TidierPlots v0.7.8 [fce5fe82] Turing v0.34.1 [0db1332d] TuringBenchmarking v0.5.4 [1986cc42] Unitful v1.21.0 [51b3953f] VimBindings v0.3.14 [276b4fcb] WGLMakie v0.10.12 [29a6e085] Wavelets v0.10.0 Info Packages marked with ⌃ and ⌅ have new versions available. Those with ⌃ may be upgradable, but those with ⌅ are restricted by compatibility constraints from upgrading. To see why use `status --outdated`
using Pkg; Pkg.status(; mode = PKGMODE_MANIFEST)
julia> Pkg.status(;mode=PKGMODE_MANIFEST) Status `~/.julia/environments/v1.10/Manifest.toml` [47edcb42] ADTypes v1.9.0 [a4c015fc] ANSIColoredPrinters v0.0.1 [fbe9abb3] AWS v1.92.0 ⌅ [c3fe647b] AbstractAlgebra v0.41.11 [621f4979] AbstractFFTs v1.5.0 [80f14c24] AbstractMCMC v5.3.0 ⌅ [7a57a42e] AbstractPPL v0.8.4 [1520ce14] AbstractTrees v0.4.5 [7d9f7c33] Accessors v0.1.38 [79e6a3ab] Adapt v4.0.4 [35492f91] AdaptivePredicates v1.2.0 [0bf59076] AdvancedHMC v0.6.1 [5b7e9947] AdvancedMH v0.8.3 [576499cb] AdvancedPS v0.6.0 [b5ca4192] AdvancedVI v0.2.6 [cbdf2221] AlgebraOfGraphics v0.8.11 [66dad0bd] AliasTables v1.1.3 [27a7e980] Animations v0.4.1 [dce04be8] ArgCheck v2.3.0 [ec485272] ArnoldiMethod v0.4.0 [7d9fca2a] Arpack v0.5.4 [4fba245c] ArrayInterface v7.16.0 [4c555306] ArrayLayouts v1.10.3 [69666777] Arrow v2.7.3 [31f734f8] ArrowTypes v2.3.0 [a9b6321e] Atomix v0.1.0 [f3fd9213] Attractors v1.19.10 [67c07d97] Automa v1.0.4 [13072b0f] AxisAlgorithms v1.1.0 [39de3d68] AxisArrays v0.4.7 [aae01518] BandedMatrices v1.7.5 [198e06fe] BangBang v0.4.3 [9718e550] Baselet v0.1.1 [6e4b80f9] BenchmarkTools v1.5.0 [e2ed5e7c] Bijections v0.1.9 ⌃ [76274a88] Bijectors v0.13.12 [d1d4a3ce] BitFlags v0.1.9 [c3b6d118] BitIntegers v0.3.2 [62783981] BitTwiddlingConvenienceFunctions v0.1.6 [a134a8b2] BlackBoxOptim v0.6.3 [a74b3585] Blosc v0.7.3 [824d6782] Bonito v3.2.1 [764a87c0] BoundaryValueDiffEq v5.10.0 [e1450e63] BufferedStreams v1.2.2 ⌅ [fa961155] CEnum v0.4.2 [2a0fbf3d] CPUSummary v0.2.6 [a9c8d775] CPUTime v1.0.0 [96374032] CRlibm v1.0.1 [00ebfdb7] CSTParser v3.4.3 [336ed68f] CSV v0.10.14 [159f3aea] Cairo v1.1.0 [13f3f980] CairoMakie v0.12.12 [49dc2e85] Calculus v0.5.1 [54eefc05] Cascadia v1.0.2 [324d7699] CategoricalArrays v0.10.8 [8be319e6] Chain v0.6.0 [082447d4] ChainRules v1.71.0 [d360d2e6] ChainRulesCore v1.25.0 [9e997f8a] ChangesOfVariables v0.1.9 [608a59af] ChaosTools v3.2.1 [caabdcdb] Cleaner v1.1.1 [82f2e89e] ClickHouse v0.2.3 [fb6a15b2] CloseOpenIntervals v0.1.13 [aaaa29a8] Clustering v0.15.7 [da1fd8a2] CodeTracking v1.3.6 [523fee87] CodecBzip2 v0.8.4 [6309b1aa] CodecInflate64 v0.1.3 [5ba52731] CodecLz4 v0.4.5 [944b1d66] CodecZlib v0.7.6 [6b39b394] CodecZstd v0.8.5 [a2cac450] ColorBrewer v0.4.0 [35d6a980] ColorSchemes v3.26.0 [3da002f7] ColorTypes v0.11.5 [c3611d14] ColorVectorSpace v0.10.0 [5ae59095] Colors v0.12.11 [861a8166] Combinatorics v1.0.2 [a80b9123] CommonMark v0.8.13 [38540f10] CommonSolve v0.2.4 [bbf7d656] CommonSubexpressions v0.3.1 [f70d9fcc] CommonWorldInvalidations v1.0.0 [34da2185] Compat v4.16.0 [ab4b797d] ComplexityMeasures v3.7.0 [b152e2b5] CompositeTypes v0.1.4 [a33af91c] CompositionsBase v0.1.2 [2569d6c7] ConcreteStructs v0.2.3 [f0e56b4a] ConcurrentUtilities v2.4.2 [8f4d0f93] Conda v1.10.2 [5218b696] Configurations v0.17.6 [88cd18e8] ConsoleProgressMonitor v0.1.2 [187b0558] ConstructionBase v1.5.8 [6add18c4] ContextVariablesX v0.1.3 [d38c429a] Contour v0.6.3 [150eb455] CoordinateTransformations v0.6.3 [adafc99b] CpuId v0.3.1 [a8cc5b0e] Crayons v4.1.1 [f68482b8] Cthulhu v2.15.1 [a10d1c49] DBInterface v2.6.1 [717857b8] DSP v0.7.10 [9a962f9c] DataAPI v1.16.0 [a93c6f00] DataFrames v1.7.0 [1313f7d8] DataFramesMeta v0.15.3 [82cc6244] DataInterpolations v6.4.1 [864edb3b] DataStructures v0.18.20 [e2d170a0] DataValueInterfaces v1.0.0 [55939f99] DecFP v1.3.2 [abce61dc] Decimals v0.4.1 [244e2a9f] DefineSingletons v0.1.2 [927a84f5] DelaunayTriangulation v1.6.0 [bcd4f6db] DelayDiffEq v5.48.1 [5732040d] DelayEmbeddings v2.8.0 [8bb1440f] DelimitedFiles v1.9.1 [b429d917] DensityInterface v0.4.0 [85a47980] Dictionaries v0.4.2 [2b5f629d] DiffEqBase v6.156.1 ⌅ [459566f4] DiffEqCallbacks v3.9.1 [77a26b50] DiffEqNoiseProcess v5.23.0 [163ba53b] DiffResults v1.1.0 [b552c78f] DiffRules v1.15.1 [0c46a032] DifferentialEquations v7.14.0 [a0c0ee7d] DifferentiationInterface v0.6.5 [b4f34e82] Distances v0.10.11 [31c24e10] Distributions v0.25.112 [ced4e74d] DistributionsAD v0.6.55 [ffbed154] DocStringExtensions v0.9.3 [e30172f5] Documenter v1.7.0 [5b8099bc] DomainSets v0.7.14 ⌅ [d2f5444f] DuckDB v0.10.3 ⌅ [366bfd00] DynamicPPL v0.28.4 [7c1d4256] DynamicPolynomials v0.6.0 ⌅ [06fc5a27] DynamicQuantities v0.13.2 [61744808] DynamicalSystems v3.3.22 [6e36e845] DynamicalSystemsBase v3.11.0 [b7d42ee7] Einsum v0.4.1 [cad2338a] EllipticalSliceSampling v2.0.0 [b2ad6718] EmacsVterm v0.3.0 [4e289a0a] EnumX v1.0.4 ⌃ [f151be2c] EnzymeCore v0.7.8 [90fa49ef] ErrorfreeArithmetic v0.5.2 ⌃ [429591f6] ExactPredicates v2.2.5 [460bff9d] ExceptionUnwrapping v0.1.10 [d4d017d3] ExponentialUtilities v1.26.1 [e2ba6199] ExprTools v0.1.10 [21656369] ExpressionExplorer v1.0.4 ⌅ [6b7a57c9] Expronicon v0.8.5 [55351af7] ExproniconLite v0.10.13 [411431e0] Extents v0.1.4 [8f5d6c58] EzXML v1.2.0 [c87230d0] FFMPEG v0.4.2 [7a1cc6ca] FFTW v1.8.0 [cc61a311] FLoops v0.2.2 [b9860ae5] FLoopsBase v0.1.1 [5207ad80] FNVHash v0.1.0 [9d29842c] FastAlmostBandedMatrices v0.1.3 [7034ab61] FastBroadcast v0.3.5 [9aa1b823] FastClosures v0.3.2 [29a986be] FastLapackInterface v2.0.4 [fa42c844] FastRounding v0.3.1 [5789e2e9] FileIO v1.16.3 [8fc22ac5] FilePaths v0.8.3 [48062228] FilePathsBase v0.9.22 [1a297f60] FillArrays v1.13.0 [64ca27bc] FindFirstFunctions v1.4.1 [6a86dc24] FiniteDiff v2.24.0 [fb4d412d] FixedPointDecimals v0.5.3 [53c48c17] FixedPointNumbers v0.8.5 [08572546] FlameGraphs v1.0.0 [1eca21be] FoldingTrees v1.2.1 [1fa38f19] Format v1.3.7 [f6369f11] ForwardDiff v0.10.36 [4665ce21] FractalDimensions v1.8.2 [b38be410] FreeType v4.1.1 [663a7486] FreeTypeAbstraction v0.10.3 [069b7b12] FunctionWrappers v1.1.3 [77dc65aa] FunctionWrappersWrappers v0.1.3 [d9f16b24] Functors v0.4.12 ⌅ [fb4132e2] FuzzyCompletions v0.5.4 [f7f18e0c] GLFW v3.4.3 [38e38edf] GLM v1.9.0 [e9467ef8] GLMakie v0.10.12 [0c68f7d7] GPUArrays v10.3.1 [46192b85] GPUArraysCore v0.1.6 ⌃ [28b8d3ca] GR v0.73.5 [92fee26a] GZip v0.6.2 [c145ed77] GenericSchur v0.5.4 [68eda718] GeoFormatTypes v0.4.2 [cf35fbd7] GeoInterface v1.3.7 [0edc0954] GeoInterfaceMakie v0.1.8 [0329782f] GeoInterfaceRecipes v1.0.2 [61d90e0f] GeoJSON v0.8.1 [db073c08] GeoMakie v0.7.4 [0ef565a4] Geodesy v1.1.0 [5c1252a2] GeometryBasics v0.4.11 ⌃ [3251bfac] GeometryOps v0.1.5 ⌃ [d7ba0133] Git v1.3.0 [bc5e4493] GitHub v5.9.0 [c27321d9] Glob v1.3.1 [55e21f81] GoogleCloud v0.11.0 [a2bd30eb] Graphics v1.1.2 [86223c79] Graphs v1.12.0 [3955a311] GridLayoutBase v0.11.0 [42e2da0e] Grisu v1.0.2 ⌅ [0b43b601] Groebner v0.7.5 ⌅ [9db2cae5] Gtk4 v0.6.9 [8710efd8] GtkObservables v2.1.3 [708ec375] Gumbo v0.8.2 [c8ec2601] H5Zblosc v0.1.2 [0bc81568] HAML v0.3.5 [f67ccb44] HDF5 v0.17.2 [cd3eb016] HTTP v1.10.8 [3e5b6fbb] HostCPUFeatures v0.1.17 [1baab800] HybridArrays v0.4.16 [34004b35] HypergeometricFunctions v0.3.24 [47d2ed2b] Hyperscript v0.0.5 [ac1192a8] HypertextLiteral v0.9.5 [09f84164] HypothesisTests v0.11.3 [b5f81e59] IOCapture v0.2.5 [7869d1d1] IRTools v0.4.14 [615f187c] IfElse v0.1.1 [2803e5a7] ImageAxes v0.6.11 [c817782e] ImageBase v0.1.7 [a09fc81d] ImageCore v0.10.2 [82e4d734] ImageIO v0.6.8 [bc367c6b] ImageMetadata v0.9.9 [313cdc1a] Indexing v1.1.1 [9b13fd28] IndirectArrays v1.0.0 [a303e19e] Infinity v0.2.4 [d25df0c9] Inflate v0.1.5 [83e8ac13] IniFile v0.5.1 [22cec73e] InitialValues v0.3.1 [842dd82b] InlineStrings v1.4.2 [505f98c9] InplaceOps v0.3.0 [0c81fc1b] InputBuffers v1.0.0 [18e54dd8] IntegerMathUtils v0.1.2 [a98d9a8b] Interpolations v0.15.1 ⌅ [d1acc4aa] IntervalArithmetic v0.20.9 [d2bf35a9] IntervalRootFinding v0.5.11 [8197267c] IntervalSets v0.7.10 [d8418881] Intervals v1.10.0 [3587e190] InverseFunctions v0.1.17 [41ab1584] InvertedIndices v1.3.0 [92d709cd] IrrationalConstants v0.2.2 [f1662d9f] Isoband v0.1.1 [c8e1da08] IterTools v1.10.0 [42fd0dbc] IterativeSolvers v0.9.4 [82899510] IteratorInterfaceExtensions v1.0.0 [4138dd39] JLD v0.13.5 [033835bb] JLD2 v0.5.4 [1019f520] JLFzf v0.1.8 [692b3bcd] JLLWrappers v1.6.0 [682c06a0] JSON v0.21.4 [0f8b85d8] JSON3 v1.14.0 [b835a17e] JpegTurbo v0.1.5 [98e50ef6] JuliaFormatter v1.0.60 [aa1ae85d] JuliaInterpreter v0.9.36 [70703baa] JuliaSyntax v0.4.10 [b14d175d] JuliaVariables v0.2.4 [ccbc3e58] JumpProcesses v9.13.7 [ef3ab10e] KLU v0.6.0 ⌃ [63c18a36] KernelAbstractions v0.9.26 [5ab0869b] KernelDensity v0.6.9 [2c470bb0] Kronecker v0.5.5 [ba0b0d4f] Krylov v0.9.6 [5be7bae1] LBFGSB v0.4.1 [929cbde3] LLVM v9.1.2 [26dcc766] LPVSpectral v0.3.3 [8ac3fa9e] LRUCache v1.6.1 [b964fa9f] LaTeXStrings v1.3.1 [2ee39098] LabelledArrays v1.16.0 ⌅ [984bce1d] LambertW v0.4.6 [8ef0a80b] Languages v0.4.6 [23fbe1c1] Latexify v0.16.5 [6f188dcb] LayerDicts v1.0.0 [10f19ff3] LayoutPointers v0.1.17 [0e77f7df] LazilyInitializedFields v1.2.2 ⌅ [5078a376] LazyArrays v1.10.0 [8cdb02fc] LazyModules v0.3.1 [1d6d02ad] LeftChildRightSiblingTrees v0.2.0 [2d8b4e74] LevyArea v1.0.0 ⌃ [194296ae] LibPQ v1.17.1 [6f1fad26] Libtask v0.8.7 [2ec943e9] Libz v1.0.1 [a4a7f996] LightBSON v0.2.21 [d3d80556] LineSearches v7.3.0 [7a12625a] LinearMaps v3.11.3 [92481ed7] LinearRegression v0.2.1 ⌃ [7ed4a6bd] LinearSolve v2.34.0 [4345ca2d] Loess v0.6.4 [6fdf6af0] LogDensityProblems v2.1.2 [996a588d] LogDensityProblemsAD v1.10.1 [2ab3a3ac] LogExpFunctions v0.3.28 [e6f89c97] LoggingExtras v1.0.3 [fc60dff9] LombScargle v1.0.3 [bdcacae8] LoopVectorization v0.12.171 [6f1432cf] LoweredCodeUtils v3.0.2 [c7f686f2] MCMCChains v6.0.6 [be115224] MCMCDiagnosticTools v0.3.10 [6c6e2e6c] MIMEs v0.1.4 [e80e1ace] MLJModelInterface v1.11.0 [d8e11817] MLStyle v0.4.17 [3da0fdf6] MPIPreferences v0.1.11 [1914dd2f] MacroTools v0.5.13 [ee78f7c6] Makie v0.21.12 [20f20a25] MakieCore v0.8.8 [36869731] Malt v1.1.1 [af67fdf4] ManifoldDiff v0.3.12 ⌅ [1cead3c2] Manifolds v0.9.20 [3362f125] ManifoldsBase v0.15.16 [d125e4d3] ManualMemory v0.1.8 [dbb5928d] MappedArrays v0.4.2 [299715c1] MarchingCubes v0.1.9 [d0879d2d] MarkdownAST v0.1.2 [b8f27783] MathOptInterface v1.31.2 [0a4f8689] MathTeXEngine v0.6.1 [99c1a7ee] MatrixEquations v2.4.2 ⌅ [a3b82374] MatrixFactorizations v2.2.0 [bb5d69b7] MaybeInplace v0.1.4 [739be429] MbedTLS v1.1.9 [eff96d63] Measurements v2.11.0 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[6462fe0b] Sockets [2f01184e] SparseArrays v1.10.0 [10745b16] Statistics v1.10.0 [4607b0f0] SuiteSparse [fa267f1f] TOML v1.0.3 [a4e569a6] Tar v1.10.0 [8dfed614] Test [cf7118a7] UUIDs [4ec0a83e] Unicode [e66e0078] CompilerSupportLibraries_jll v1.1.1+0 [781609d7] GMP_jll v6.2.1+6 [deac9b47] LibCURL_jll v8.4.0+0 [e37daf67] LibGit2_jll v1.6.4+0 [29816b5a] LibSSH2_jll v1.11.0+1 [3a97d323] MPFR_jll v4.2.0+1 [c8ffd9c3] MbedTLS_jll v2.28.2+1 [14a3606d] MozillaCACerts_jll v2023.1.10 [4536629a] OpenBLAS_jll v0.3.23+4 [05823500] OpenLibm_jll v0.8.1+2 [efcefdf7] PCRE2_jll v10.42.0+1 [bea87d4a] SuiteSparse_jll v7.2.1+1 [83775a58] Zlib_jll v1.2.13+1 [8e850b90] libblastrampoline_jll v5.11.0+0 [8e850ede] nghttp2_jll v1.52.0+1 [3f19e933] p7zip_jll v17.4.0+2 Info Packages marked with ⌃ and ⌅ have new versions available. Those with ⌃ may be upgradable, but those with ⌅ are restricted by compatibility constraints from upgrading. To see why use `status --outdated -m`
versioninfo()
versioninfo() Julia Version 1.10.5 Commit 6f3fdf7b362 (2024-08-27 14:19 UTC) Build Info: Official https://julialang.org/ release Platform Info: OS: Linux (x86_64-linux-gnu) CPU: 4 × Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz WORD_SIZE: 64 LIBM: libopenlibm LLVM: libLLVM-15.0.7 (ORCJIT, skylake) Threads: 1 default, 0 interactive, 1 GC (on 4 virtual cores)
Additional context
May be related to #300
The text was updated successfully, but these errors were encountered:
Thanks, this does look like a bug.
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Describe the bug 🐞
If I specify
saveat
, the ARKODE() solver includes the start and endpoints of tspan.Expected behavior
The Tsit5() and other solvers I've tried do not include the start and endpoints when specifying saveat.
Minimal Reproducible Example 👇
Environment (please complete the following information):
all the env stuff
using Pkg; Pkg.status()
using Pkg; Pkg.status(; mode = PKGMODE_MANIFEST)
versioninfo()
Additional context
May be related to #300
The text was updated successfully, but these errors were encountered: