Beam Work-Precision Diagrams

using OrdinaryDiffEq, DiffEqDevTools, Sundials, Plots, ODEInterfaceDiffEq, LSODA
using OrdinaryDiffEqBDF, OrdinaryDiffEqExtrapolation, OrdinaryDiffEqFIRK, OrdinaryDiffEqRosenbrock, OrdinaryDiffEqSDIRK, OrdinaryDiffEqStabilizedRK
using SciMLLogging
using LinearAlgebra, RecursiveFactorization, Polyester, PreallocationTools, OrdinaryDiffEqCore
gr()

# Beam problem from the IVP Test Set
# ODE of dimension 80 (N=40 discretization points, 2*N unknowns)
# Describes the deformation of a beam under an applied force
# Exact translation from Fortran feval subroutine at:
# http://archimede.dm.uniba.it/~testset/src/problems/beam.f

const N_beam = 40
const NN_beam = 2 * N_beam
const NSQ_beam = N_beam * N_beam
const NQUATR_beam = NSQ_beam * NSQ_beam
const DELTAS_beam = 1.0 / N_beam

# Pre-allocate work buffers using DiffCache for ForwardDiff compatibility
const _beam_sth   = DiffCache(zeros(N_beam))
const _beam_cth   = DiffCache(zeros(N_beam))
const _beam_v     = DiffCache(zeros(N_beam))
const _beam_w     = DiffCache(zeros(N_beam))
const _beam_alpha = DiffCache(zeros(N_beam))
const _beam_beta  = DiffCache(zeros(N_beam))
const _beam_u     = DiffCache(zeros(N_beam))

function beam!(df, th, p, t)
    N = N_beam
    NN = NN_beam

    sth   = get_tmp(_beam_sth, df)
    cth   = get_tmp(_beam_cth, df)
    v     = get_tmp(_beam_v, df)
    w     = get_tmp(_beam_w, df)
    alpha = get_tmp(_beam_alpha, df)
    beta  = get_tmp(_beam_beta, df)
    u     = get_tmp(_beam_u, df)

    # Precompute sin and cos of differences (indices 2:N only)
    for i in 2:N
        thdiff = th[i] - th[i-1]
        sth[i] = sin(thdiff)
        cth[i] = cos(thdiff)
    end

    # Compute right-hand side of the linear system
    if t > pi
        # Case t > pi: no external force
        v[1] = (-3.0*th[1] + th[2]) * NQUATR_beam
        for i in 2:N-1
            v[i] = (th[i-1] - 2.0*th[i] + th[i+1]) * NQUATR_beam
        end
        v[N] = (th[N-1] - th[N]) * NQUATR_beam
    else
        # Case t <= pi: with applied force
        fabs = 1.5 * sin(t)^2
        fx = -fabs
        fy = fabs
        v[1] = (-3.0*th[1] + th[2]) * NQUATR_beam +
               NSQ_beam * (fy*cos(th[1]) - fx*sin(th[1]))
        for i in 2:N-1
            v[i] = (th[i-1] - 2.0*th[i] + th[i+1]) * NQUATR_beam +
                   NSQ_beam * (fy*cos(th[i]) - fx*sin(th[i]))
        end
        v[N] = (th[N-1] - th[N]) * NQUATR_beam +
               NSQ_beam * (fy*cos(th[N]) - fx*sin(th[N]))
    end

    # Compute product DV = W
    w[1] = sth[2] * v[2]
    for i in 2:N-1
        w[i] = -sth[i]*v[i-1] + sth[i+1]*v[i+1]
    end
    w[N] = -sth[N] * v[N-1]

    # Add term 3: w[i] += th[N+i]^2
    for i in 1:N
        w[i] += th[N+i]^2
    end

    # Solve tridiagonal system CW = W
    alpha[1] = 1.0
    for i in 2:N
        alpha[i] = 2.0
        beta[i-1] = -cth[i]
    end
    alpha[N] = 3.0

    # Forward elimination
    for i in N-1:-1:1
        q = beta[i] / alpha[i+1]
        w[i] = w[i] - w[i+1] * q
        alpha[i] = alpha[i] - beta[i] * q
    end

    # Back substitution
    w[1] = w[1] / alpha[1]
    for i in 2:N
        w[i] = (w[i] - beta[i-1]*w[i-1]) / alpha[i]
    end

    # Compute U = CV + DW
    u[1] = v[1] - cth[2]*v[2] + sth[2]*w[2]
    for i in 2:N-1
        u[i] = 2.0*v[i] - cth[i]*v[i-1] - cth[i+1]*v[i+1] -
               sth[i]*w[i-1] + sth[i+1]*w[i+1]
    end
    u[N] = 3.0*v[N] - cth[N]*v[N-1] - sth[N]*w[N-1]

    # Put derivatives in right place
    for i in 1:N
        df[i] = th[N+i]      # theta' = omega
        df[N+i] = u[i]       # omega' = u
    end
end

u0 = zeros(NN_beam)
tspan = (0.0, 5.0)

prob = ODEProblem{true, SciMLBase.FullSpecialize}(beam!, u0, tspan)

# Generate reference solution using tight tolerances
# The beam problem is moderately stiff and needs many steps
sol = solve(prob, CVODE_BDF(), abstol=1/10^14, reltol=1/10^14, maxiters=Int(1e7))
test_sol = TestSolution(sol)

abstols = 1.0 ./ 10.0 .^ (4:11)
reltols = 1.0 ./ 10.0 .^ (1:8);

The Beam problem describes the dynamics of a flexible beam under an applied force. The beam is discretized into N=40 segments, giving 80 ODEs (40 angles + 40 angular velocities). The force is applied for t ∈ [0, π] and then released, causing the beam to oscillate.

Reference plots from the IVP Test Set show the angular velocities z(10), z(20), z(30), z(40) (components 50, 60, 70, 80) peaking around t=1-2 and oscillating:

# Plot angular velocities matching reference: z(10)=y(50), z(20)=y(60), z(30)=y(70), z(40)=y(80)
p1 = plot(sol, idxs=[50], title="z(10)", legend=false)
p2 = plot(sol, idxs=[60], title="z(20)", legend=false)
p3 = plot(sol, idxs=[70], title="z(30)", legend=false)
p4 = plot(sol, idxs=[80], title="z(40)", legend=false)
plot(p1, p2, p3, p4, layout=(2,2), size=(800,600))
�Ptmux;��_Gi=1719413160,f=100,a=q,U=1;iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAA
AAfFcSJAAAABmJLR0QA/wD/AP+gvaeTAAAAC0lEQVQImWNgAAIAAAUAAWJVMogAAAAASUVORK5C
YII=��\�\�Ptmux;��_Gi=1719413160,f=100,a=q;iVBORw0KGgoAAAANSUhEUgAAAAEAAAAB
CAYAAAAfFcSJAAAABmJLR0QA/wD/AP+gvaeTAAAAC0lEQVQImWNgAAIAAAUAAWJVMogAAAAASUV
ORK5CYII=��\�\�Ptmux;��]1337;Capabilities��\�\

# Plot angles: y(10), y(20), y(30), y(40)
p1 = plot(sol, idxs=[10], title="y(10)", legend=false)
p2 = plot(sol, idxs=[20], title="y(20)", legend=false)
p3 = plot(sol, idxs=[30], title="y(30)", legend=false)
p4 = plot(sol, idxs=[40], title="y(40)", legend=false)
plot(p1, p2, p3, p4, layout=(2,2), size=(800,600))

Omissions

The following were omitted from the tests due to convergence failures.

#sol = solve(prob,ROCK2()); # Unstable
#sol = solve(prob,ROCK4()); # Unstable

High Tolerances

abstols = 1.0 ./ 10.0 .^ (5:8)
reltols = 1.0 ./ 10.0 .^ (1:4);
setups = [Dict(:alg=>Rosenbrock23()),
          Dict(:alg=>FBDF()),
          Dict(:alg=>QNDF()),
          Dict(:alg=>NordsieckBDF()),
          Dict(:alg=>TRBDF2()),
          Dict(:alg=>CVODE_BDF()),
          Dict(:alg=>rodas()),
          Dict(:alg=>radau()),
          Dict(:alg=>lsoda()),
          Dict(:alg=>RadauIIA5()),
          ]
wp = WorkPrecisionSet(prob,abstols,reltols,setups;verbose=SciMLLogging.None(),
                      save_everystep=false,appxsol=test_sol,maxiters=Int(1e5),numruns=10)
plot(wp)

setups = [Dict(:alg=>Rosenbrock23()),
          Dict(:alg=>Kvaerno3()),
          Dict(:alg=>CVODE_BDF()),
          Dict(:alg=>KenCarp4()),
          Dict(:alg=>TRBDF2()),
          Dict(:alg=>KenCarp3()),
          Dict(:alg=>Rodas4()),
          Dict(:alg=>lsoda()),
          Dict(:alg=>radau())]
wp = WorkPrecisionSet(prob,abstols,reltols,setups; verbose=SciMLLogging.None(),
                      save_everystep=false,appxsol=test_sol,maxiters=Int(1e5),numruns=10)
plot(wp)

setups = [Dict(:alg=>Rosenbrock23()),
          Dict(:alg=>TRBDF2()),
          Dict(:alg=>ImplicitEulerExtrapolation()),
          Dict(:alg=>ImplicitEulerBarycentricExtrapolation()),
          Dict(:alg=>ImplicitHairerWannerExtrapolation()),
          Dict(:alg=>ABDF2()),
          Dict(:alg=>FBDF()),
          Dict(:alg=>NordsieckBDF()),
]
wp = WorkPrecisionSet(prob,abstols,reltols,setups; verbose=SciMLLogging.None(),
                      save_everystep=false,appxsol=test_sol,maxiters=Int(1e5),numruns=10)
plot(wp)

Low Tolerances

This is the speed at lower tolerances, measuring what's good when accuracy is needed.

abstols = 1.0 ./ 10.0 .^ (7:12)
reltols = 1.0 ./ 10.0 .^ (4:9)

setups = [Dict(:alg=>FBDF()),
          Dict(:alg=>QNDF()),
          Dict(:alg=>NordsieckBDF()),
          Dict(:alg=>CVODE_BDF()),
          Dict(:alg=>ddebdf()),
          Dict(:alg=>Rodas4()),
          Dict(:alg=>Rodas5P()),
          Dict(:alg=>rodas()),
          Dict(:alg=>radau()),
          Dict(:alg=>lsoda()),
]
wp = WorkPrecisionSet(prob,abstols,reltols,setups;verbose=SciMLLogging.None(),
                      save_everystep=false,appxsol=test_sol,maxiters=Int(1e5),numruns=10)
plot(wp)
EXIT OF RODAS AT X=        0.2879E+01
  MORE THAN NMAX =               100000 STEPS ARE NEEDED

setups = [Dict(:alg=>Kvaerno4()),
          Dict(:alg=>Kvaerno5()),
          Dict(:alg=>CVODE_BDF()),
          Dict(:alg=>KenCarp4()),
          Dict(:alg=>KenCarp5()),
          Dict(:alg=>Rodas4()),
          Dict(:alg=>Rodas5P()),
          Dict(:alg=>radau()),
          Dict(:alg=>ImplicitEulerExtrapolation()),
          Dict(:alg=>ImplicitEulerBarycentricExtrapolation()),
          Dict(:alg=>ImplicitHairerWannerExtrapolation()),
          ]
wp = WorkPrecisionSet(prob,abstols,reltols,setups; verbose=SciMLLogging.None(),
                      save_everystep=false,appxsol=test_sol,maxiters=Int(1e5),numruns=10)
plot(wp)

Multithreading benchmarks with Parallel Extrapolation Methods

#Setting BLAS to one thread to measure gains
LinearAlgebra.BLAS.set_num_threads(1)

abstols = 1.0 ./ 10.0 .^ (10:12)
reltols = 1.0 ./ 10.0 .^ (7:9)

setups = [
          Dict(:alg=>CVODE_BDF()),
          Dict(:alg=>KenCarp4()),
          Dict(:alg=>Rodas4()),
          Dict(:alg=>Rodas5P()),
          Dict(:alg=>QNDF()),
          Dict(:alg=>NordsieckBDF()),
          Dict(:alg=>lsoda()),
          Dict(:alg=>radau()),
          Dict(:alg=>seulex()),
          Dict(:alg=>ImplicitEulerExtrapolation(threading = OrdinaryDiffEqCore.PolyesterThreads())),
          Dict(:alg=>ImplicitEulerExtrapolation(threading = false)),
          Dict(:alg=>ImplicitEulerBarycentricExtrapolation(min_order = 4, threading = OrdinaryDiffEqCore.PolyesterThreads())),
          Dict(:alg=>ImplicitEulerBarycentricExtrapolation(min_order = 4, threading = false)),
          Dict(:alg=>ImplicitHairerWannerExtrapolation(threading = OrdinaryDiffEqCore.PolyesterThreads())),
          Dict(:alg=>ImplicitHairerWannerExtrapolation(threading = false)),
          ]

solnames = ["CVODE_BDF","KenCarp4","Rodas4","Rodas5P","QNDF","NordsieckBDF","lsoda","radau","seulex","ImplEulerExtpl (threaded)", "ImplEulerExtpl (non-threaded)",
           "ImplEulerBaryExtpl (threaded)","ImplEulerBaryExtpl (non-threaded)","ImplHWExtpl (threaded)","ImplHWExtpl (non-threaded)"]

wp = WorkPrecisionSet(prob,abstols,reltols,setups; verbose=SciMLLogging.None(),
                    names = solnames,save_everystep=false,appxsol=test_sol,maxiters=Int(1e5),numruns=10)

plot(wp, title = "Implicit Methods: Beam",legend=:outertopleft,size = (1000,500),
     xticks = 10.0 .^ (-15:1:1),
     yticks = 10.0 .^ (-6:0.3:5),
     bottom_margin= 5Plots.mm)

Conclusion

The Beam problem is an 80-dimensional stiff ODE from structural mechanics. It involves solving a tridiagonal system at each RHS evaluation, which adds computational cost per function evaluation. CVODE_BDF and Rodas4/Rodas5P perform well across tolerance ranges. The implicit extrapolation methods benefit from multithreading on this larger problem.

Appendix

These benchmarks are a part of the SciMLBenchmarks.jl repository, found at: https://github.com/SciML/SciMLBenchmarks.jl. For more information on high-performance scientific machine learning, check out the SciML Open Source Software Organization https://sciml.ai.

To locally run this benchmark, do the following commands:

using SciMLBenchmarks
SciMLBenchmarks.weave_file("benchmarks/StiffODE","Beam.jmd")

Computer Information:

Julia Version 1.11.9
Commit 53a02c0720c (2026-02-06 00:27 UTC)
Build Info:
  Official https://julialang.org/ release
Platform Info:
  OS: Linux (x86_64-linux-gnu)
  CPU: 128 × AMD EPYC 7502 32-Core Processor
  WORD_SIZE: 64
  LLVM: libLLVM-16.0.6 (ORCJIT, znver2)
Threads: 1 default, 0 interactive, 1 GC (on 128 virtual cores)
Environment:
  JULIA_PKG_PRECOMPILE_AUTO = 0

Package Information:

Status `~/sandbox/tmp_20260825_180339_53321/stiffode-master-full/benchmarks/StiffODE/Project.toml`
  [2169fc97] AlgebraicMultigrid v2.0.1
  [6e4b80f9] BenchmarkTools v1.8.0
⌃ [f3b72e0c] DiffEqDevTools v3.4.0
⌅ [5b8099bc] DomainSets v0.7.18
⌅ [5a33fad7] GeometricIntegratorsDiffEq v1.3.3
  [40713840] IncompleteLU v0.2.1
  [7f56f5a3] LSODA v1.2.0
⌃ [7ed4a6bd] LinearSolve v5.13.0
⌅ [94925ecb] MethodOfLines v0.11.19
⌃ [961ee093] ModelingToolkit v11.39.1
⌅ [09606e27] ODEInterfaceDiffEq v4.1.0
⌃ [1dea7af3] OrdinaryDiffEq v7.7.0
⌃ [6ad6398a] OrdinaryDiffEqBDF v2.4.4
⌃ [bbf590c4] OrdinaryDiffEqCore v4.15.0
⌃ [e0540318] OrdinaryDiffEqExponentialRK v2.3.0
⌃ [becaefa8] OrdinaryDiffEqExtrapolation v2.5.0
⌃ [5960d6e9] OrdinaryDiffEqFIRK v2.8.0
⌃ [5dd0a6cf] OrdinaryDiffEqPDIRK v2.4.0
⌃ [43230ef6] OrdinaryDiffEqRosenbrock v2.7.0
⌃ [2d112036] OrdinaryDiffEqSDIRK v2.9.0
  [358294b1] OrdinaryDiffEqStabilizedRK v2.6.0
⌃ [65888b18] ParameterizedFunctions v5.26.0
  [91a5bcdd] Plots v1.41.7
  [f517fe37] Polyester v0.7.19
⌃ [d236fae5] PreallocationTools v1.6.0
  [132c30aa] ProfileSVG v0.2.2
  [f2c3362d] RecursiveFactorization v0.2.30
⌃ [31c91b34] SciMLBenchmarks v0.1.3
  [a6db7da4] SciMLLogging v2.1.0
  [90137ffa] StaticArrays v1.9.19
  [c3572dad] Sundials v6.6.0
⌃ [0c5d862f] Symbolics v7.36.0
⌅ [a759f4b9] TimerOutputs v0.5.29
  [37e2e46d] LinearAlgebra v1.11.0
  [2f01184e] SparseArrays v1.11.0
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`

And the full manifest:

Status `~/sandbox/tmp_20260825_180339_53321/stiffode-master-full/benchmarks/StiffODE/Manifest.toml`
  [47edcb42] ADTypes v1.24.0
  [14f7f29c] AMD v0.5.3
  [a4c015fc] ANSIColoredPrinters v0.0.1
  [621f4979] AbstractFFTs v1.5.0
  [6e696c72] AbstractPlutoDingetjes v1.4.0
  [1520ce14] AbstractTrees v0.4.5
  [7d9f7c33] Accessors v0.1.45
  [79e6a3ab] Adapt v4.7.0
  [2169fc97] AlgebraicMultigrid v2.0.1
  [66dad0bd] AliasTables v1.1.3
  [ec485272] ArnoldiMethod v0.4.0
⌃ [4fba245c] ArrayInterface v7.30.0
  [4c555306] ArrayLayouts v1.12.2
  [13072b0f] AxisAlgorithms v1.1.0
⌃ [aae01518] BandedMatrices v1.11.0
  [6e4b80f9] BenchmarkTools v1.8.0
  [0e736298] Bessels v0.2.8
  [e2ed5e7c] Bijections v0.2.2
  [b2a6c25c] BinaryHeaps v1.1.0
⌃ [caf10ac8] BipartiteGraphs v0.1.11
  [d1d4a3ce] BitFlags v0.1.10
  [62783981] BitTwiddlingConvenienceFunctions v0.1.6
  [8e7c35d0] BlockArrays v1.10.0
⌃ [70df07ce] BracketingNonlinearSolve v1.12.5
  [fa961155] CEnum v0.5.0
  [2a0fbf3d] CPUSummary v0.2.7
  [d360d2e6] ChainRulesCore v1.26.1
  [fb6a15b2] CloseOpenIntervals v0.1.13
  [944b1d66] CodecZlib v0.7.9
  [35d6a980] ColorSchemes v3.31.0
⌅ [3da002f7] ColorTypes v0.11.5
⌃ [c3611d14] ColorVectorSpace v0.10.0
⌅ [5ae59095] Colors v0.12.11
⌅ [861a8166] Combinatorics v1.0.2
  [38540f10] CommonSolve v0.2.14
  [bbf7d656] CommonSubexpressions v0.3.1
  [f70d9fcc] CommonWorldInvalidations v1.2.0
⌅ [a09551c4] CompactBasisFunctions v0.2.15
  [34da2185] Compat v4.18.1
  [b152e2b5] CompositeTypes v0.1.4
  [a33af91c] CompositionsBase v0.1.2
  [2569d6c7] ConcreteStructs v0.2.8
  [f0e56b4a] ConcurrentUtilities v2.6.0
  [8f4d0f93] Conda v1.10.3
  [187b0558] ConstructionBase v1.6.0
⌃ [7ae1f121] ContinuumArrays v0.20.9
  [d38c429a] Contour v0.6.3
  [adafc99b] CpuId v0.3.1
  [a8cc5b0e] Crayons v4.2.0
  [717857b8] DSP v0.8.6
  [9a962f9c] DataAPI v1.16.0
  [864edb3b] DataStructures v0.19.6
  [e2d170a0] DataValueInterfaces v1.0.0
  [8bb1440f] DelimitedFiles v1.9.1
⌃ [2b5f629d] DiffEqBase v7.18.2
⌃ [459566f4] DiffEqCallbacks v4.19.2
⌃ [f3b72e0c] DiffEqDevTools v3.4.0
⌃ [77a26b50] DiffEqNoiseProcess v5.36.0
  [163ba53b] DiffResults v1.1.0
  [b552c78f] DiffRules v1.16.0
  [a0c0ee7d] DifferentiationInterface v0.7.21
  [b4f34e82] Distances v0.10.12
  [31c24e10] Distributions v0.25.131
  [ffbed154] DocStringExtensions v0.9.5
⌃ [e30172f5] Documenter v1.17.0
⌅ [5b8099bc] DomainSets v0.7.18
⌃ [7c1d4256] DynamicPolynomials v0.6.6
  [4e289a0a] EnumX v1.0.7
  [f151be2c] EnzymeCore v0.8.21
  [460bff9d] ExceptionUnwrapping v0.1.11
⌃ [d4d017d3] ExponentialUtilities v1.35.0
  [e2ba6199] ExprTools v0.1.11
  [55351af7] ExproniconLite v0.10.14
  [c87230d0] FFMPEG v0.4.5
  [7a1cc6ca] FFTW v1.10.0
  [7034ab61] FastBroadcast v1.4.0
  [9aa1b823] FastClosures v0.3.2
  [442a2c76] FastGaussQuadrature v1.3.0
  [a4df4552] FastPower v1.5.0
  [057dd010] FastTransforms v0.17.2
  [5789e2e9] FileIO v1.20.0
  [1a297f60] FillArrays v1.17.0
  [64ca27bc] FindFirstFunctions v3.2.1
  [6a86dc24] FiniteDiff v2.33.0
⌅ [53c48c17] FixedPointNumbers v0.8.6
⌃ [08572546] FlameGraphs v1.1.0
  [1fa38f19] Format v1.3.7
  [f6369f11] ForwardDiff v1.4.5
  [a85aefff] FunctionMaps v0.1.2
  [069b7b12] FunctionWrappers v1.1.3
  [77dc65aa] FunctionWrappersWrappers v1.13.0
  [46192b85] GPUArraysCore v0.2.0
⌃ [28b8d3ca] GR v0.73.26
  [a0844989] Gamma v1.2.0
  [a8297547] GenericFFT v0.1.7
  [14197337] GenericLinearAlgebra v0.4.0
  [c145ed77] GenericSchur v0.5.8
⌃ [9a0b12b7] GeometricBase v0.14.8
  [c85262ba] GeometricEquations v0.21.2
⌅ [dcce2d33] GeometricIntegrators v0.16.10
⌅ [71212ab4] GeometricIntegratorsBase v0.4.2
⌅ [5a33fad7] GeometricIntegratorsDiffEq v1.3.3
  [7843afe4] GeometricSolutions v0.6.5
  [d7ba0133] Git v1.5.0
  [86223c79] Graphs v1.14.0
  [42e2da0e] Grisu v1.0.2
⌅ [cd3eb016] HTTP v1.11.0
⌅ [eafb193a] Highlights v0.5.3
  [3e5b6fbb] HostCPUFeatures v0.1.18
  [34004b35] HypergeometricFunctions v0.3.30
  [7073ff75] IJulia v1.34.4
  [b5f81e59] IOCapture v1.0.0
  [615f187c] IfElse v0.1.1
⌃ [3263718b] ImplicitDiscreteSolve v2.2.0
  [40713840] IncompleteLU v0.2.1
  [9b13fd28] IndirectArrays v1.0.0
  [4858937d] InfiniteArrays v0.15.15
  [e1ba4f0e] Infinities v0.1.12
  [d25df0c9] Inflate v0.1.5
  [18e54dd8] IntegerMathUtils v0.1.4
  [a98d9a8b] Interpolations v0.16.3
  [8197267c] IntervalSets v0.7.14
  [3587e190] InverseFunctions v0.1.17
  [92d709cd] IrrationalConstants v0.2.6
  [c8e1da08] IterTools v1.10.0
  [82899510] IteratorInterfaceExtensions v1.0.0
  [1019f520] JLFzf v0.1.11
  [692b3bcd] JLLWrappers v1.8.0
⌅ [682c06a0] JSON v0.21.4
  [ae98c720] Jieko v0.2.1
⌃ [ccbc3e58] JumpProcesses v9.29.3
  [ba0b0d4f] Krylov v0.10.9
⌃ [2faa5264] LHLFactorization v2.2.0
  [7f56f5a3] LSODA v1.2.0
  [b964fa9f] LaTeXStrings v1.4.1
  [23fbe1c1] Latexify v0.16.12
  [10f19ff3] LayoutPointers v0.1.17
  [0e77f7df] LazilyInitializedFields v1.3.0
  [5078a376] LazyArrays v2.12.0
⌅ [1d6d02ad] LeftChildRightSiblingTrees v0.2.1
  [87fe0de2] LineSearch v0.1.16
⌃ [7ed4a6bd] LinearSolve v5.13.0
  [2ab3a3ac] LogExpFunctions v1.0.1
  [e6f89c97] LoggingExtras v1.2.0
  [bdcacae8] LoopVectorization v0.12.174
  [1914dd2f] MacroTools v0.5.16
  [d125e4d3] ManualMemory v0.1.8
  [d0879d2d] MarkdownAST v0.1.3
  [a3b82374] MatrixFactorizations v3.1.3
  [bb5d69b7] MaybeInplace v0.1.8
  [739be429] MbedTLS v1.1.10
  [442fdcdd] Measures v0.3.3
⌅ [94925ecb] MethodOfLines v0.11.19
  [e1d29d7a] Missings v1.2.0
⌃ [961ee093] ModelingToolkit v11.39.1
⌃ [7771a370] ModelingToolkitBase v1.68.0
⌃ [6bb917b9] ModelingToolkitTearing v1.20.5
  [2e0e35c7] Moshi v0.3.12
  [46d2c3a1] MuladdMacro v0.2.7
  [102ac46a] MultivariatePolynomials v0.5.19
  [ffc61752] Mustache v1.0.21
  [d8a4904e] MutableArithmetics v1.8.0
  [77ba4419] NaNMath v1.1.4
⌃ [8913a72c] NonlinearSolve v4.28.0
⌃ [be0214bd] NonlinearSolveBase v2.47.0
⌃ [5959db7a] NonlinearSolveFirstOrder v2.4.0
⌃ [9a2c21bd] NonlinearSolveQuasiNewton v1.15.1
⌃ [26075421] NonlinearSolveSpectralMethods v1.8.0
  [54ca160b] ODEInterface v0.5.2
⌅ [09606e27] ODEInterfaceDiffEq v4.1.0
  [6fe1bfb0] OffsetArrays v1.17.0
  [4d8831e6] OpenSSL v1.6.1
⌅ [bac558e1] OrderedCollections v1.8.2
⌃ [1dea7af3] OrdinaryDiffEq v7.7.0
⌃ [6ad6398a] OrdinaryDiffEqBDF v2.4.4
⌃ [bbf590c4] OrdinaryDiffEqCore v4.15.0
⌃ [50262376] OrdinaryDiffEqDefault v2.5.0
⌃ [4302a76b] OrdinaryDiffEqDifferentiation v3.10.0
⌃ [e0540318] OrdinaryDiffEqExponentialRK v2.3.0
⌃ [becaefa8] OrdinaryDiffEqExtrapolation v2.5.0
⌃ [5960d6e9] OrdinaryDiffEqFIRK v2.8.0
⌃ [127b3ac7] OrdinaryDiffEqNonlinearSolve v2.9.0
⌃ [5dd0a6cf] OrdinaryDiffEqPDIRK v2.4.0
⌃ [43230ef6] OrdinaryDiffEqRosenbrock v2.7.0
⌃ [b4bd8bb3] OrdinaryDiffEqRosenbrockTableaus v2.4.1
⌃ [2d112036] OrdinaryDiffEqSDIRK v2.9.0
  [358294b1] OrdinaryDiffEqStabilizedRK v2.6.0
⌃ [b1df2697] OrdinaryDiffEqTsit5 v2.1.3
⌃ [79d7bb75] OrdinaryDiffEqVerner v2.4.0
⌃ [a7812802] PDEBase v0.1.33
  [90014a1f] PDMats v0.11.41
⌃ [65888b18] ParameterizedFunctions v5.26.0
⌅ [d96e819e] Parameters v0.12.3
⌅ [69de0a69] Parsers v2.8.7
  [ccf2f8ad] PlotThemes v3.3.0
  [995b91a9] PlotUtils v1.4.4
  [91a5bcdd] Plots v1.41.7
  [e409e4f3] PoissonRandom v0.4.13
  [f517fe37] Polyester v0.7.19
  [1d0040c9] PolyesterWeave v0.2.2
  [f27b6e38] Polynomials v4.1.1
⌃ [d236fae5] PreallocationTools v1.6.0
⌅ [aea7be01] PrecompileTools v1.2.1
  [21216c6a] Preferences v1.5.2
  [08abe8d2] PrettyTables v3.4.8
  [27ebfcd6] Primes v0.5.7
  [132c30aa] ProfileSVG v0.2.2
  [92933f4c] ProgressMeter v1.11.0
  [43287f4e] PtrArrays v1.4.0
  [78ab2635] PureGebal v1.1.0
  [0c0d3e7f] PureKLU v1.4.1
  [1fd47b50] QuadGK v2.11.3
⌅ [a08977f5] QuadratureRules v0.1.10
⌃ [c4ea9172] QuasiArrays v0.13.8
  [c84ed2f1] Ratios v0.4.5
  [988b38a3] ReadOnlyArrays v0.2.0
  [795d4caa] ReadOnlyDicts v1.0.1
  [3cdcf5f2] RecipesBase v1.3.4
  [01d81517] RecipesPipeline v0.6.12
  [807425ed] RecurrenceRelationships v0.2.0
⌃ [731186ca] RecursiveArrayTools v4.5.0
  [f2c3362d] RecursiveFactorization v0.2.30
  [189a3867] Reexport v1.2.2
  [2792f1a3] RegistryInstances v0.1.0
  [05181044] RelocatableFolders v1.0.1
  [ae029012] Requires v1.3.1
  [ae5879a3] ResettableStacks v1.4.0
  [9fe22ead] RespecializeParams v1.3.0
  [79098fc4] Rmath v0.9.0
  [47965b36] RootedTrees v2.27.0
  [f2b01f46] Roots v3.0.7
⌅ [fb486d5c] RungeKutta v0.5.23
  [7e49a35a] RuntimeGeneratedFunctions v0.5.25
⌃ [9dfe8606] SCCNonlinearSolve v1.15.0
  [94e857df] SIMDTypes v0.1.0
  [476501e8] SLEEFPirates v0.6.46
  [1bc83da4] SafeTestsets v0.1.0
⌃ [0bca4576] SciMLBase v3.49.2
⌃ [31c91b34] SciMLBenchmarks v0.1.3
⌃ [19f34311] SciMLJacobianOperators v0.1.17
  [a6db7da4] SciMLLogging v2.1.0
⌃ [c0aeaf25] SciMLOperators v1.29.0
  [431bcebd] SciMLPublic v1.3.0
⌃ [53ae85a6] SciMLStructures v1.10.4
  [6c6a2e73] Scratch v1.3.0
  [efcf1570] Setfield v1.1.2
⌃ [992d4aef] Showoff v1.0.3
  [777ac1f9] SimpleBufferStream v1.2.0
⌃ [727e6d20] SimpleNonlinearSolve v2.14.0
⌅ [36b790f5] SimpleSolvers v0.9.2
  [699a6c99] SimpleTraits v0.9.6
  [a2af1166] SortingAlgorithms v1.2.3
  [bd59d7e1] SparseBandedMatrices v1.4.0
  [a57abbd0] SparseColumnPivotedQR v2.1.7
  [0a514795] SparseMatrixColorings v0.4.27
  [276daf66] SpecialFunctions v2.9.0
  [860ef19b] StableRNGs v1.0.4
  [0c0c59c1] StarAlgebras v0.3.0
⌃ [64909d44] StateSelection v1.11.0
  [aedffcd0] Static v1.4.6
  [0d7ed370] StaticArrayInterface v1.10.0
  [90137ffa] StaticArrays v1.9.19
  [1e83bf80] StaticArraysCore v1.4.4
⌃ [10745b16] Statistics v1.11.1
  [82ae8749] StatsAPI v1.8.0
  [2913bbd2] StatsBase v0.34.13
  [4c63d2b9] StatsFuns v2.2.1
  [7792a7ef] StrideArraysCore v0.5.9
  [69024149] StringEncodings v0.3.7
⌅ [892a3eda] StringManipulation v0.5.0
  [09ab397b] StructArrays v0.7.3
  [c3572dad] Sundials v6.6.0
  [2efcf032] SymbolicIndexingInterface v0.3.55
⌃ [19f23fe9] SymbolicLimits v1.2.0
⌅ [d1185830] SymbolicUtils v4.45.0
⌃ [0c5d862f] Symbolics v7.36.0
  [3783bdb8] TableTraits v1.0.1
  [bd369af6] Tables v1.14.0
  [ed4db957] TaskLocalValues v0.1.3
  [62fd8b95] TensorCore v0.1.1
  [8ea1fca8] TermInterface v2.0.0
  [8290d209] ThreadingUtilities v0.5.6
⌅ [a759f4b9] TimerOutputs v0.5.29
  [c751599d] ToeplitzMatrices v0.8.5
  [3bb67fe8] TranscodingStreams v0.11.3
  [d5829a12] TriangularSolve v0.2.6
  [781d530d] TruncatedStacktraces v1.4.0
  [5c2747f8] URIs v1.7.0
  [3a884ed6] UnPack v1.0.2
  [1cfade01] UnicodeFun v0.4.1
  [41fe7b60] Unzip v0.2.0
  [3d5dd08c] VectorizationBase v0.21.74
  [33b4df10] VectorizedRNG v0.2.26
  [81def892] VersionParsing v1.3.0
  [d30d5f5c] WeakCacheSets v0.1.0
  [44d3d7a6] Weave v0.10.12
  [efce3f68] WoodburyMatrices v1.1.0
  [ddb6d928] YAML v0.4.16
  [c2297ded] ZMQ v1.5.1
  [6e34b625] Bzip2_jll v1.0.9+0
  [83423d85] Cairo_jll v1.18.7+0
  [ee1fde0b] Dbus_jll v1.16.2+0
  [2702e6a9] EpollShim_jll v0.0.20230411+1
  [2e619515] Expat_jll v2.8.3+0
⌅ [b22a6f82] FFMPEG_jll v8.1.2+0
  [f5851436] FFTW_jll v3.3.12+0
  [34b6f7d7] FastTransforms_jll v0.6.4+0
  [a3f928ae] Fontconfig_jll v2.17.1+0
  [d7e528f0] FreeType2_jll v2.14.3+1
  [559328eb] FriBidi_jll v1.0.17+0
⌃ [0656b61e] GLFW_jll v3.4.1+1
⌅ [d2c73de3] GR_jll v0.73.26+0
⌅ [b0724c58] GettextRuntime_jll v0.22.4+0
  [61579ee1] Ghostscript_jll v9.55.1+0
  [020c3dae] Git_LFS_jll v3.7.1+0
  [f8c6e375] Git_jll v2.55.0+0
  [7746bdde] Glib_jll v2.88.3+0
  [3b182d85] Graphite2_jll v1.3.16+0
⌅ [2e76f6c2] HarfBuzz_jll v8.5.1+0
  [1d5cc7b8] IntelOpenMP_jll v2025.2.0+0
  [aacddb02] JpegTurbo_jll v3.2.0+1
  [c1c5ebd0] LAME_jll v3.100.3+0
  [88015f11] LERC_jll v4.1.0+0
  [1d63c593] LLVMOpenMP_jll v22.1.7+0
  [aae0fff6] LSODA_jll v0.1.2+0
⌅ [e9f186c6] Libffi_jll v3.4.7+0
  [7e76a0d4] Libglvnd_jll v1.7.1+1
  [94ce4f54] Libiconv_jll v1.18.0+0
  [4b2f31a3] Libmount_jll v2.42.0+0
  [89763e89] Libtiff_jll v4.7.3+0
  [38a345b3] Libuuid_jll v2.42.0+0
  [856f044c] MKL_jll v2025.2.0+0
  [c771fb93] ODEInterface_jll v0.0.2+0
  [e7412a2a] Ogg_jll v1.3.6+0
  [656ef2d0] OpenBLAS32_jll v0.3.34+0
  [9bd350c2] OpenSSH_jll v10.5.1+0
⌃ [458c3c95] OpenSSL_jll v3.5.7+0
  [efe28fd5] OpenSpecFun_jll v0.5.6+0
  [91d4177d] Opus_jll v1.6.1+0
⌃ [36c8627f] Pango_jll v1.58.0+0
  [30392449] Pixman_jll v0.46.4+0
  [c0090381] Qt6Base_jll v6.10.2+2
  [629bc702] Qt6Declarative_jll v6.10.2+2
  [ce943373] Qt6ShaderTools_jll v6.10.2+1
  [6de9746b] Qt6Svg_jll v6.10.2+0
  [e99dba38] Qt6Wayland_jll v6.10.2+1
  [f50d1b31] Rmath_jll v0.5.2+0
  [ca45d3f4] SuiteSparse32_jll v7.12.1+0
  [fb77eaff] Sundials_jll v7.5.0+0
  [a44049a8] Vulkan_Loader_jll v1.3.243+0
  [a2964d1f] Wayland_jll v1.24.0+0
  [ffd25f8a] XZ_jll v5.8.3+0
  [f67eecfb] Xorg_libICE_jll v1.1.2+0
  [c834827a] Xorg_libSM_jll v1.2.6+0
  [4f6342f7] Xorg_libX11_jll v1.8.13+0
  [0c0b7dd1] Xorg_libXau_jll v1.0.13+0
  [935fb764] Xorg_libXcursor_jll v1.2.4+0
  [a3789734] Xorg_libXdmcp_jll v1.1.6+0
  [1082639a] Xorg_libXext_jll v1.3.8+0
  [d091e8ba] Xorg_libXfixes_jll v6.0.2+0
  [a51aa0fd] Xorg_libXi_jll v1.8.4+0
  [d1454406] Xorg_libXinerama_jll v1.1.7+0
  [ec84b674] Xorg_libXrandr_jll v1.5.6+0
  [ea2f1a96] Xorg_libXrender_jll v0.9.12+0
  [a65dc6b1] Xorg_libpciaccess_jll v0.19.0+0
  [c7cfdc94] Xorg_libxcb_jll v1.17.1+0
  [cc61e674] Xorg_libxkbfile_jll v1.2.0+0
  [e920d4aa] Xorg_xcb_util_cursor_jll v0.1.6+0
  [12413925] Xorg_xcb_util_image_jll v0.4.1+0
  [2def613f] Xorg_xcb_util_jll v0.4.1+0
  [975044d2] Xorg_xcb_util_keysyms_jll v0.4.1+0
  [0d47668e] Xorg_xcb_util_renderutil_jll v0.3.10+0
  [c22f9ab0] Xorg_xcb_util_wm_jll v0.4.2+0
  [35661453] Xorg_xkbcomp_jll v1.4.7+0
  [33bec58e] Xorg_xkeyboard_config_jll v2.47.0+2
  [c5fb5394] Xorg_xtrans_jll v1.6.0+0
  [8f1865be] ZeroMQ_jll v4.3.6+0
  [3161d3a3] Zstd_jll v1.5.7+1
  [35ca27e7] eudev_jll v3.2.14+0
⌅ [214eeab7] fzf_jll v0.61.1+0
  [a4ae2306] libaom_jll v3.14.1+0
⌃ [0ac62f75] libass_jll v0.17.4+0
  [1183f4f0] libdecor_jll v0.2.2+0
  [8e53e030] libdrm_jll v2.4.134+0
  [2db6ffa8] libevdev_jll v1.13.4+0
  [f638f0a6] libfdk_aac_jll v2.0.4+0
  [36db933b] libinput_jll v1.28.1+0
  [b53b4c65] libpng_jll v1.6.58+0
  [a9144af2] libsodium_jll v1.0.21+0
  [9a156e7d] libva_jll v2.23.0+0
  [f27f6e37] libvorbis_jll v1.3.8+0
  [009596ad] mtdev_jll v1.1.7+0
  [1317d2d5] oneTBB_jll v2022.3.0+0
⌅ [1270edf5] x264_jll v10164.0.1+0
  [dfaa095f] x265_jll v4.1.0+0
  [d8fb68d0] xkbcommon_jll v1.13.0+0
  [0dad84c5] ArgTools v1.1.2
  [56f22d72] Artifacts v1.11.0
  [2a0f44e3] Base64 v1.11.0
  [ade2ca70] Dates v1.11.0
  [8ba89e20] Distributed v1.11.0
  [f43a241f] Downloads v1.6.0
  [7b1f6079] FileWatching v1.11.0
  [9fa8497b] Future v1.11.0
  [b77e0a4c] InteractiveUtils v1.11.0
  [4af54fe1] LazyArtifacts v1.11.0
  [b27032c2] LibCURL v0.6.4
  [76f85450] LibGit2 v1.11.0
  [8f399da3] Libdl v1.11.0
  [37e2e46d] LinearAlgebra v1.11.0
  [56ddb016] Logging v1.11.0
  [d6f4376e] Markdown v1.11.0
  [a63ad114] Mmap v1.11.0
  [ca575930] NetworkOptions v1.2.0
  [44cfe95a] Pkg v1.11.0
  [de0858da] Printf v1.11.0
  [9abbd945] Profile v1.11.0
  [3fa0cd96] REPL v1.11.0
  [9a3f8284] Random v1.11.0
  [ea8e919c] SHA v0.7.0
  [9e88b42a] Serialization v1.11.0
  [1a1011a3] SharedArrays v1.11.0
  [6462fe0b] Sockets v1.11.0
  [2f01184e] SparseArrays v1.11.0
  [f489334b] StyledStrings v1.11.0
  [4607b0f0] SuiteSparse
  [fa267f1f] TOML v1.0.3
  [a4e569a6] Tar v1.10.0
  [8dfed614] Test v1.11.0
  [cf7118a7] UUIDs v1.11.0
  [4ec0a83e] Unicode v1.11.0
  [e66e0078] CompilerSupportLibraries_jll v1.1.1+0
  [781609d7] GMP_jll v6.3.0+0
  [deac9b47] LibCURL_jll v8.6.0+0
  [e37daf67] LibGit2_jll v1.7.2+0
  [29816b5a] LibSSH2_jll v1.11.0+1
  [3a97d323] MPFR_jll v4.2.1+0
  [c8ffd9c3] MbedTLS_jll v2.28.6+0
  [14a3606d] MozillaCACerts_jll v2023.12.12
  [4536629a] OpenBLAS_jll v0.3.27+1
  [05823500] OpenLibm_jll v0.8.5+0
  [efcefdf7] PCRE2_jll v10.42.0+1
  [bea87d4a] SuiteSparse_jll v7.7.0+0
  [83775a58] Zlib_jll v1.2.13+1
  [8e850b90] libblastrampoline_jll v5.11.0+0
  [8e850ede] nghttp2_jll v1.59.0+0
  [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`