threaded total degree solve for multiple sets of parameters

[oameye]

Can it be that solving a system with the total_degree method for multiple sets of parameters is not implemented for threading=true? For threading=false it works.

using HomotopyContinuation
@var u1, v1, ω, α, γ, λ, ω0

eqs = [
    -u1*ω^2 + u1*ω0^2 + (3/4)*u1^3*α + (3/4)*u1*v1^2*α + (-1/2)*u1*λ*ω0^2 + v1*γ*ω,
    -v1*ω^2 + v1*ω0^2 + (3/4)*v1^3*α - u1*γ*ω + (3/4)*u1^2*v1*α + (1/2)*v1*λ*ω0^2,
]

F = System(eqs, parameters = [ω, α, γ, λ, ω0], variables = [u1, v1])

input_array = [
    [0.9, 1.0, 0.01, 0.01, 1.1],
    [0.9105263157894737, 1.0, 0.01, 0.01, 1.1],
    [0.9210526315789473, 1.0, 0.01, 0.01, 1.1],
    [0.9315789473684211, 1.0, 0.01, 0.01, 1.1],
    [0.9421052631578948, 1.0, 0.01, 0.01, 1.1],
    [0.9526315789473684, 1.0, 0.01, 0.01, 1.1]]

HomotopyContinuation.solve(
    F;
    start_system=:total_degree,
    target_parameters=input_array,
    threading=true
)

ERROR: MethodError: no method matching threaded_solve(::Solver{…}, ::HomotopyContinuation.TotalDegreeStartSolutionsIterator{…}; catch_interrupt::Bool)

Closest candidates are:
  threaded_solve(::Solver, ::AbstractArray, ::Any, ::Any; catch_interrupt)
   @ HomotopyContinuation C:\Users\User\.julia\packages\HomotopyContinuation\zXiJa\src\solve.jl:582
  threaded_solve(::Solver, ::AbstractArray, ::Any; ...)
   @ HomotopyContinuation C:\Users\User\.julia\packages\HomotopyContinuation\zXiJa\src\solve.jl:582
  threaded_solve(::Solver, ::AbstractArray; ...)
   @ HomotopyContinuation C:\Users\User\.julia\packages\HomotopyContinuation\zXiJa\src\solve.jl:582

Stacktrace:
 [1] many_solve(solver::Solver{…}, starts::HomotopyContinuation.TotalDegreeStartSolutionsIterator{…}, many_target_parameters::Vector{…}, progress::ProgressMeter.Progress, transform_result::typeof(tuple), transform_parameters::typeof(identity), ::Val{…}; threading::Bool, catch_interrupt::Bool)
   @ HomotopyContinuation C:\Users\User\.julia\packages\HomotopyContinuation\zXiJa\src\solve.jl:755
 [2] many_solve
   @ C:\Users\User\.julia\packages\HomotopyContinuation\zXiJa\src\solve.jl:741 [inlined]
 [3] #solve#292
   @ C:\Users\User\.julia\packages\HomotopyContinuation\zXiJa\src\solve.jl:698 [inlined]
 [4] solve(args::System; show_progress::Bool, threading::Bool, catch_interrupt::Bool, target_parameters::Vector{…}, stop_early_cb::Function, transform_result::Nothing, transform_parameters::typeof(identity), flatten::Nothing, target_subspaces::Nothing, kwargs::@Kwargs{…})
   @ HomotopyContinuation C:\Users\User\.julia\packages\HomotopyContinuation\zXiJa\src\solve.jl:475
 [5] top-level scope
   @ Untitled-2:26
Some type information was truncated. Use `show(err)` to see complete types.

[oameye]

it seems to be because threaded_solve requires starts to be an AbstractArray, whereas serial_solve does not.

[PBrdng]

Yes, this seems to be a bug coming from a wrong type. I'll fix it next week. Thanks for noticing.