Error with optional flag set on IDA.

[gpitton]

I am trying to run this example showing how to use IDA for solving a DAE.

It works fine, except when I try to use the optional parameter progress:

julia> sol = solve(prob, IDA(), progress=true)
ERROR: MethodError: no method matching isless(::Base.CoreLogging.LogLevel, ::Int64)
Closest candidates are:
  isless(::Missing, ::Any) at missing.jl:87
  isless(::Base.CoreLogging.LogLevel, ::Base.CoreLogging.LogLevel) at logging.jl:106
  isless(::AbstractFloat, ::Real) at operators.jl:158

I'm using Sundials 3.9.0 and Julia 1.4.0.

[ChrisRackauckas]

function f(out,du,u,p,t)
  out[1] = - 0.04u[1]              + 1e4*u[2]*u[3] - du[1]
  out[2] = + 0.04u[1] - 3e7*u[2]^2 - 1e4*u[2]*u[3] - du[2]
  out[3] = u[1] + u[2] + u[3] - 1.0
end

u₀ = [1.0, 0, 0]
du₀ = [-0.04, 0.04, 0.0]
tspan = (0.0,100000.0)
using Sundials
differential_vars = [true,true,false]
prob = DAEProblem(f,du₀,u₀,tspan,differential_vars=differential_vars)
sol = solve(prob,IDA(),progress=true)

works on Julia v1.3. @tkf do you know if the logging level stuff changed in v1.4?

[tkf]

I'm not sure how it changes between Julia 1.3 and 1.4. But I think this is SciML/DifferentialEquations.jl#510. We need something like SciML/OrdinaryDiffEq.jl#936 here.

[ViralBShah]

Please file a new issue with the recent version of all the libraries if still an issue.