Error Restarting the Optimization

[zxjroger]

I use BSON to save the optimization progress stored in bbsetup and then restart the optimization. My latest saved optimization progress was done in [email protected]. Then, I update the package to the master version. However, I can no longer load the optimization progress using BSON. It gives me the following error:

TypeError: in Type, in FS, expected FS<:FitnessScheme, got Type{ContinuousRectSearchSpace}
constructtype(T::Type, Ts::Vector{Any}) at extensions.jl:51
(::BSON.var"#35#36")(d::Dict{Symbol, Any}, init::Module) at extensions.jl:54
_raise_recursive(d::Dict{Symbol, Any}, cache::IdDict{Any, Any}, init::Module) at read.jl:80
raise_recursive(d::Dict{Symbol, Any}, cache::IdDict{Any, Any}, init::Module) at read.jl:93
(::BSON.var"#23#24"{IdDict{Any, Any}, Module})(x::Dict{Symbol, Any}) at read.jl:98
applychildren!(f::BSON.var"#23#24"{IdDict{Any, Any}, Module}, x::Vector{Any}) at BSON.jl:28
raise_recursive at read.jl:98 [inlined]
(::BSON.var"#17#20"{IdDict{Any, Any}, Module})(x::Vector{Any}) at read.jl:80
applychildren!(f::BSON.var"#17#20"{IdDict{Any, Any}, Module}, x::Dict{Symbol, Any}) at BSON.jl:21
_raise_recursive(d::Dict{Symbol, Any}, cache::IdDict{Any, Any}, init::Module) at read.jl:80
raise_recursive(d::Dict{Symbol, Any}, cache::IdDict{Any, Any}, init::Module) at read.jl:93
(::BSON.var"#45#46")(d::Dict{Symbol, Any}, cache::IdDict{Any, Any}, init::Module) at extensions.jl:139
raise_recursive(d::Dict{Symbol, Any}, cache::IdDict{Any, Any}, init::Module) at read.jl:92
(::BSON.var"#23#24"{IdDict{Any, Any}, Module})(x::Dict{Symbol, Any}) at read.jl:98
applychildren!(f::BSON.var"#23#24"{IdDict{Any, Any}, Module}, x::Vector{Any}) at BSON.jl:28
raise_recursive at read.jl:98 [inlined]
(::BSON.var"#41#42"{IdDict{Any, Any}, Module})(x::Vector{Any}) at extensions.jl:125
iterate at generator.jl:47 [inlined]
collect_to!(dest::Vector{Vector{Any}}, itr::Base.Generator{Vector{Any}, BSON.var"#41#42"{IdDict{Any, Any}, Module}}, offs::Int64, st::Int64) at array.jl:724
collect_to_with_first!(dest::Vector{Vector{Any}}, v1::Vector{Any}, itr::Base.Generator{Vector{Any}, BSON.var"#41#42"{IdDict{Any, Any}, Module}}, st::Int64) at array.jl:702
_collect(c::Vector{Any}, itr::Base.Generator{Vector{Any}, BSON.var"#41#42"{IdDict{Any, Any}, Module}}, #unused#::Base.EltypeUnknown, isz::Base.HasShape{1}) at array.jl:696
collect_similar(cont::Vector{Any}, itr::Base.Generator{Vector{Any}, BSON.var"#41#42"{IdDict{Any, Any}, Module}}) at array.jl:606
map(f::Function, A::Vector{Any}) at abstractarray.jl:2294
newstruct_raw(cache::IdDict{Any, Any}, T::Type, d::Dict{Symbol, Any}, init::Module) at extensions.jl:125
(::BSON.var"#45#46")(d::Dict{Symbol, Any}, cache::IdDict{Any, Any}, init::Module) at extensions.jl:141
raise_recursive(d::Dict{Symbol, Any}, cache::IdDict{Any, Any}, init::Module) at read.jl:92
raise_recursive at read.jl:103 [inlined]
load at read.jl:108 [inlined]
load(x::String) at read.jl:108
top-level scope at Notes.jl:4184
eval at boot.jl:360 [inlined]

[robertfeldt]

Hmm, not sure what the effect of BSON is here but is the problem to load the state saved with an old version of BBO or is the problem also there if you both save and load (using BSON) with the current master? Julia's Serialization seems to work as expected see example here (I just tried and this works as expected on 1.6.1):

https://github.com/robertfeldt/BlackBoxOptim.jl/blob/master/examples/save_and_load_optimization_state_to_disc.jl

[Libbum]

I'd also try pinning your BSON version to 0.2.6 and see if you get the same issues. I've had some problems with later versions that I cannot seem to identify the root cause of.