Consolidate handling of Stats

src/NonlinearSolve.jl

@@ -34,13 +34,14 @@ using PrecompileTools: @recompile_invalidations, @compile_workload, @setup_workl
                          istril, istriu, lu, mul!, norm, pinv, tril!, triu!
     using LineSearches: LineSearches
     using LinearSolve: LinearSolve, LUFactorization, QRFactorization, ComposePreconditioner,
-                       InvPreconditioner, needs_concrete_A
+                       InvPreconditioner, needs_concrete_A, AbstractFactorization,
+                       DefaultAlgorithmChoice, DefaultLinearSolver
     using MaybeInplace: @bb
     using Printf: @printf
     using Preferences: Preferences, @load_preference, @set_preferences!
     using RecursiveArrayTools: recursivecopy!, recursivefill!
     using SciMLBase: AbstractNonlinearAlgorithm, JacobianWrapper, AbstractNonlinearProblem,
-                     AbstractSciMLOperator, _unwrap_val, has_jac, isinplace
+                     AbstractSciMLOperator, _unwrap_val, has_jac, isinplace, NLStats
     using SparseArrays: AbstractSparseMatrix, SparseMatrixCSC
     using SparseDiffTools: SparseDiffTools, AbstractSparsityDetection,
                            ApproximateJacobianSparsity, JacPrototypeSparsityDetection,

src/abstract_types.jl

@@ -142,7 +142,6 @@ abstract type AbstractNonlinearSolveLineSearchCache end
 
 function reinit_cache!(
         cache::AbstractNonlinearSolveLineSearchCache, args...; p = cache.p, kwargs...)
-    cache.nf[] = 0
     cache.p = p
 end
 
@@ -235,7 +234,7 @@ function __show_cache(io::IO, cache::AbstractNonlinearSolveCache, indent = 0)
     println(io, (" "^(indent + 4)) * "u = ", get_u(cache), ",")
     println(io, (" "^(indent + 4)) * "residual = ", get_fu(cache), ",")
     println(io, (" "^(indent + 4)) * "inf-norm(residual) = ", norm(get_fu(cache), Inf), ",")
-    println(io, " "^(indent + 4) * "nsteps = ", get_nsteps(cache), ",")
+    println(io, " "^(indent + 4) * "nsteps = ", cache.stats.nsteps, ",")
     println(io, " "^(indent + 4) * "retcode = ", cache.retcode)
     print(io, " "^(indent) * ")")
 end

src/core/approximate_jacobian.jl

@@ -95,7 +95,7 @@ end
     inv_workspace
 
     # Counters
-    nf::Int
+    stats::NLStats
     nsteps::Int
     nresets::Int
     max_resets::Int
@@ -131,7 +131,7 @@ function __reinit_internal!(cache::ApproximateJacobianSolveCache{INV, GB, iip},
     end
     cache.p = p
 
-    cache.nf = 1
+    __reinit_internal!(cache.stats)
     cache.nsteps = 0
     cache.nresets = 0
     cache.steps_since_last_reset = 0
@@ -151,8 +151,9 @@ end
 
 function SciMLBase.__init(
         prob::AbstractNonlinearProblem{uType, iip}, alg::ApproximateJacobianSolveAlgorithm,
-        args...; alias_u0 = false, maxtime = nothing, maxiters = 1000, abstol = nothing,
-        reltol = nothing, linsolve_kwargs = (;), termination_condition = nothing,
+        args...; stats = empty_nlstats(), alias_u0 = false, maxtime = nothing,
+        maxiters = 1000, abstol = nothing, reltol = nothing,
+        linsolve_kwargs = (;), termination_condition = nothing,
         internalnorm::F = DEFAULT_NORM, kwargs...) where {uType, iip, F}
     timer = get_timer_output()
     @static_timeit timer "cache construction" begin
@@ -165,7 +166,7 @@ function SciMLBase.__init(
 
         linsolve = get_linear_solver(alg.descent)
         initialization_cache = __internal_init(
-            prob, alg.initialization, alg, f, fu, u, p; linsolve, maxiters, internalnorm)
+            prob, alg.initialization, alg, f, fu, u, p; stats, linsolve, maxiters, internalnorm)
 
         abstol, reltol, termination_cache = init_termination_cache(
             prob, abstol, reltol, fu, u, termination_condition)
@@ -174,7 +175,7 @@ function SciMLBase.__init(
         J = initialization_cache(nothing)
         inv_workspace, J = INV ? __safe_inv_workspace(J) : (nothing, J)
         descent_cache = __internal_init(
-            prob, alg.descent, J, fu, u; abstol, reltol, internalnorm,
+            prob, alg.descent, J, fu, u; stats, abstol, reltol, internalnorm,
             linsolve_kwargs, pre_inverted = Val(INV), timer)
         du = get_du(descent_cache)
 
@@ -192,28 +193,28 @@ function SciMLBase.__init(
             supports_trust_region(alg.descent) || error("Trust Region not supported by \
                                                         $(alg.descent).")
             trustregion_cache = __internal_init(
-                prob, alg.trustregion, f, fu, u, p; internalnorm, kwargs...)
+                prob, alg.trustregion, f, fu, u, p; stats, internalnorm, kwargs...)
             GB = :TrustRegion
         end
 
         if alg.linesearch !== missing
             supports_line_search(alg.descent) || error("Line Search not supported by \
                                                         $(alg.descent).")
             linesearch_cache = __internal_init(
-                prob, alg.linesearch, f, fu, u, p; internalnorm, kwargs...)
+                prob, alg.linesearch, f, fu, u, p; stats, internalnorm, kwargs...)
             GB = :LineSearch
         end
 
         update_rule_cache = __internal_init(
-            prob, alg.update_rule, J, fu, u, du; internalnorm)
+            prob, alg.update_rule, J, fu, u, du; stats, internalnorm)
 
         trace = init_nonlinearsolve_trace(prob, alg, u, fu, ApplyArray(__zero, J), du;
             uses_jacobian_inverse = Val(INV), kwargs...)
 
         return ApproximateJacobianSolveCache{INV, GB, iip, maxtime !== nothing}(
             fu, u, u_cache, p, du, J, alg, prob, initialization_cache,
             descent_cache, linesearch_cache, trustregion_cache, update_rule_cache,
-            reinit_rule_cache, inv_workspace, 0, 0, 0, alg.max_resets,
+            reinit_rule_cache, inv_workspace, stats, 0, 0, alg.max_resets,
             maxiters, maxtime, alg.max_shrink_times, 0, timer, 0.0,
             termination_cache, trace, ReturnCode.Default, false, false, kwargs)
     end
@@ -223,7 +224,7 @@ function __step!(cache::ApproximateJacobianSolveCache{INV, GB, iip};
         recompute_jacobian::Union{Nothing, Bool} = nothing) where {INV, GB, iip}
     new_jacobian = true
     @static_timeit cache.timer "jacobian init/reinit" begin
-        if get_nsteps(cache) == 0  # First Step is special ignore kwargs
+        if cache.nsteps == 0  # First Step is special ignore kwargs
             J_init = __internal_solve!(
                 cache.initialization_cache, cache.fu, cache.u, Val(false))
             if INV

src/core/generalized_first_order.jl

@@ -97,7 +97,7 @@ concrete_jac(::GeneralizedFirstOrderAlgorithm{CJ}) where {CJ} = CJ
     trustregion_cache
 
     # Counters
-    nf::Int
+    stats::NLStats
     nsteps::Int
     maxiters::Int
     maxtime
@@ -135,7 +135,7 @@ function __reinit_internal!(
     end
     cache.p = p
 
-    cache.nf = 1
+    __reinit_internal!(cache.stats)
     cache.nsteps = 0
     cache.maxiters = maxiters
     cache.maxtime = maxtime
@@ -153,7 +153,7 @@ end
 
 function SciMLBase.__init(
         prob::AbstractNonlinearProblem{uType, iip}, alg::GeneralizedFirstOrderAlgorithm,
-        args...; alias_u0 = false, maxiters = 1000, abstol = nothing,
+        args...; stats=empty_nlstats(), alias_u0 = false, maxiters = 1000, abstol = nothing,
         reltol = nothing, maxtime = nothing, termination_condition = nothing,
         internalnorm = DEFAULT_NORM, linsolve_kwargs = (;), kwargs...) where {uType, iip}
     timer = get_timer_output()
@@ -170,10 +170,10 @@ function SciMLBase.__init(
         linsolve_kwargs = merge((; abstol, reltol), linsolve_kwargs)
 
         jac_cache = JacobianCache(
-            prob, alg, f, fu, u, p; autodiff = alg.jacobian_ad, linsolve,
+            prob, alg, f, fu, u, p; stats, autodiff = alg.jacobian_ad, linsolve,
             jvp_autodiff = alg.forward_ad, vjp_autodiff = alg.reverse_ad)
         J = jac_cache(nothing)
-        descent_cache = __internal_init(prob, alg.descent, J, fu, u; abstol, reltol,
+        descent_cache = __internal_init(prob, alg.descent, J, fu, u; stats, abstol, reltol,
             internalnorm, linsolve_kwargs, timer)
         du = get_du(descent_cache)
 
@@ -189,15 +189,15 @@ function SciMLBase.__init(
             supports_trust_region(alg.descent) || error("Trust Region not supported by \
                                                         $(alg.descent).")
             trustregion_cache = __internal_init(
-                prob, alg.trustregion, f, fu, u, p; internalnorm, kwargs...)
+                prob, alg.trustregion, f, fu, u, p; stats, internalnorm, kwargs...)
             GB = :TrustRegion
         end
 
         if alg.linesearch !== missing
             supports_line_search(alg.descent) || error("Line Search not supported by \
                                                         $(alg.descent).")
             linesearch_cache = __internal_init(
-                prob, alg.linesearch, f, fu, u, p; internalnorm, kwargs...)
+                prob, alg.linesearch, f, fu, u, p; stats, internalnorm, kwargs...)
             GB = :LineSearch
         end
 
@@ -206,7 +206,7 @@ function SciMLBase.__init(
 
         return GeneralizedFirstOrderAlgorithmCache{iip, GB, maxtime !== nothing}(
             fu, u, u_cache, p, du, J, alg, prob, jac_cache, descent_cache, linesearch_cache,
-            trustregion_cache, 0, 0, maxiters, maxtime, alg.max_shrink_times, timer,
+            trustregion_cache, stats, 0, maxiters, maxtime, alg.max_shrink_times, timer,
             0.0, true, termination_cache, trace, ReturnCode.Default, false, kwargs)
     end
 end

src/core/generic.jl

@@ -1,11 +1,11 @@
 function SciMLBase.__solve(prob::Union{NonlinearProblem, NonlinearLeastSquaresProblem},
-        alg::AbstractNonlinearSolveAlgorithm, args...; kwargs...)
-    cache = init(prob, alg, args...; kwargs...)
+        alg::AbstractNonlinearSolveAlgorithm, args...; stats=empty_nlstats(), kwargs...)
+    cache = SciMLBase.__init(prob, alg, args...; stats, kwargs...)
     return solve!(cache)
 end
 
 function not_terminated(cache::AbstractNonlinearSolveCache)
-    return !cache.force_stop && get_nsteps(cache) < cache.maxiters
+    return !cache.force_stop && cache.nsteps < cache.maxiters
 end
 
 function SciMLBase.solve!(cache::AbstractNonlinearSolveCache)
@@ -16,21 +16,16 @@ function SciMLBase.solve!(cache::AbstractNonlinearSolveCache)
     # The solver might have set a different `retcode`
     if cache.retcode == ReturnCode.Default
         cache.retcode = ifelse(
-            get_nsteps(cache) ≥ cache.maxiters, ReturnCode.MaxIters, ReturnCode.Success)
+            cache.nsteps ≥ cache.maxiters, ReturnCode.MaxIters, ReturnCode.Success)
     end
 
     update_from_termination_cache!(cache.termination_cache, cache)
 
-    update_trace!(cache.trace, get_nsteps(cache), get_u(cache),
+    update_trace!(cache.trace, cache.nsteps, get_u(cache),
         get_fu(cache), nothing, nothing, nothing; last = True)
 
     return SciMLBase.build_solution(cache.prob, cache.alg, get_u(cache), get_fu(cache);
-        cache.retcode, stats = __compile_stats(cache), cache.trace)
-end
-
-function __compile_stats(cache::AbstractNonlinearSolveCache)
-    return SciMLBase.NLStats(get_nf(cache), get_njacs(cache), get_nfactors(cache),
-        get_nsolve(cache), get_nsteps(cache))
+        cache.retcode, cache.stats, cache.trace)
 end
 
 """
@@ -55,7 +50,8 @@ function SciMLBase.step!(cache::AbstractNonlinearSolveCache{iip, timeit},
         __step!(cache, args...; kwargs...)
     end
 
-    hasfield(typeof(cache), :nsteps) && (cache.nsteps += 1)
+    cache.stats.nsteps += 1
+    cache.nsteps += 1
 
     if timeit
         cache.total_time += time() - time_start

src/core/spectral_methods.jl

@@ -60,7 +60,7 @@ concrete_jac(::GeneralizedDFSane) = nothing
     linesearch_cache
 
     # Counters
-    nf::Int
+    stats::NLStats
     nsteps::Int
     maxiters::Int
     maxtime
@@ -106,7 +106,7 @@ function __reinit_internal!(
 
     reset!(cache.trace)
     reinit!(cache.termination_cache, get_fu(cache), get_u(cache); kwargs...)
-    cache.nf = 1
+    __reinit_internal!(cache.stats)
     cache.nsteps = 0
     cache.maxiters = maxiters
     cache.maxtime = maxtime
@@ -116,9 +116,9 @@ end
 
 @internal_caches GeneralizedDFSaneCache :linesearch_cache
 
-function SciMLBase.__init(prob::AbstractNonlinearProblem, alg::GeneralizedDFSane,
-        args...; alias_u0 = false, maxiters = 1000, abstol = nothing,
-        reltol = nothing, termination_condition = nothing,
+function SciMLBase.__init(prob::AbstractNonlinearProblem, alg::GeneralizedDFSane, args...;
+        stats = empty_nlstats(), alias_u0 = false, maxiters = 1000,
+        abstol = nothing, reltol = nothing, termination_condition = nothing,
         internalnorm::F = DEFAULT_NORM, maxtime = nothing, kwargs...) where {F}
     timer = get_timer_output()
     @static_timeit timer "cache construction" begin
@@ -130,8 +130,8 @@ function SciMLBase.__init(prob::AbstractNonlinearProblem, alg::GeneralizedDFSane
         fu = evaluate_f(prob, u)
         @bb fu_cache = copy(fu)
 
-        linesearch_cache = __internal_init(
-            prob, alg.linesearch, prob.f, fu, u, prob.p; maxiters, internalnorm, kwargs...)
+        linesearch_cache = __internal_init(prob, alg.linesearch, prob.f, fu, u, prob.p;
+            stats, maxiters, internalnorm, kwargs...)
 
         abstol, reltol, tc_cache = init_termination_cache(
             prob, abstol, reltol, fu, u_cache, termination_condition)
@@ -150,7 +150,7 @@ function SciMLBase.__init(prob::AbstractNonlinearProblem, alg::GeneralizedDFSane
 
         return GeneralizedDFSaneCache{isinplace(prob), maxtime !== nothing}(
             fu, fu_cache, u, u_cache, prob.p, du, alg, prob, σ_n, T(alg.σ_min),
-            T(alg.σ_max), linesearch_cache, 0, 0, maxiters, maxtime,
+            T(alg.σ_max), linesearch_cache, stats, 0, maxiters, maxtime,
             timer, 0.0, tc_cache, trace, ReturnCode.Default, false, kwargs)
     end
 end

src/default.jl

@@ -59,6 +59,7 @@ end
     best::Int
     current::Int
     nsteps::Int
+    stats::NLStats
     total_time::Float64
     maxtime
     retcode::ReturnCode.T
@@ -90,6 +91,7 @@ end
 function reinit_cache!(cache::NonlinearSolvePolyAlgorithmCache, args...; kwargs...)
     foreach(c -> reinit_cache!(c, args...; kwargs...), cache.caches)
     cache.current = cache.alg.start_index
+    __reinit_internal!(cache.stats)
     cache.nsteps = 0
     cache.total_time = 0.0
 end
@@ -98,8 +100,8 @@ for (probType, pType) in ((:NonlinearProblem, :NLS), (:NonlinearLeastSquaresProb
     algType = NonlinearSolvePolyAlgorithm{pType}
     @eval begin
         function SciMLBase.__init(
-                prob::$probType, alg::$algType{N}, args...; maxtime = nothing,
-                maxiters = 1000, internalnorm = DEFAULT_NORM,
+                prob::$probType, alg::$algType{N}, args...; stats = empty_nlstats(),
+                maxtime = nothing, maxiters = 1000, internalnorm = DEFAULT_NORM,
                 alias_u0 = false, verbose = true, kwargs...) where {N}
             if (alias_u0 && !ismutable(prob.u0))
                 verbose && @warn "`alias_u0` has been set to `true`, but `u0` is \
@@ -115,13 +117,14 @@ for (probType, pType) in ((:NonlinearProblem, :NLS), (:NonlinearLeastSquaresProb
             alias_u0 && (prob = remake(prob; u0 = u0_aliased))
             return NonlinearSolvePolyAlgorithmCache{isinplace(prob), N, maxtime !== nothing}(
                 map(
-                    solver -> SciMLBase.__init(prob, solver, args...; maxtime,
+                    solver -> SciMLBase.__init(prob, solver, args...; stats, maxtime,
                         internalnorm, alias_u0, verbose, kwargs...),
                     alg.algs),
                 alg,
                 -1,
                 alg.start_index,
                 0,
+                stats,
                 0.0,
                 maxtime,
                 ReturnCode.Default,
@@ -181,7 +184,6 @@ end
     push!(calls, quote
         fus = tuple($(Tuple(resids)...))
         minfu, idx = __findmin(cache.internalnorm, fus)
-        stats = __compile_stats(cache.caches[idx])
     end)
     for i in 1:N
         push!(calls, quote
@@ -203,7 +205,7 @@ end
             end
             return __build_solution_less_specialize(
                 cache.caches[idx].prob, cache.alg, u, fus[idx];
-                retcode, stats, cache.caches[idx].trace)
+                retcode, stats = cache.stats, cache.caches[idx].trace)
         end)
 
     return Expr(:block, calls...)
@@ -250,7 +252,8 @@ end
 for (probType, pType) in ((:NonlinearProblem, :NLS), (:NonlinearLeastSquaresProblem, :NLLS))
     algType = NonlinearSolvePolyAlgorithm{pType}
     @eval begin
-        @generated function SciMLBase.__solve(prob::$probType, alg::$algType{N}, args...;
+        @generated function SciMLBase.__solve(
+                prob::$probType, alg::$algType{N}, args...; stats = empty_nlstats(),
                 alias_u0 = false, verbose = true, kwargs...) where {N}
             sol_syms = [gensym("sol") for _ in 1:N]
             prob_syms = [gensym("prob") for _ in 1:N]
@@ -280,8 +283,9 @@ for (probType, pType) in ((:NonlinearProblem, :NLS), (:NonlinearLeastSquaresProb
                             else
                                 $(prob_syms[i]) = prob
                             end
-                            $(cur_sol) = SciMLBase.__solve($(prob_syms[i]), alg.algs[$(i)],
-                                args...; alias_u0, verbose, kwargs...)
+                            $(cur_sol) = SciMLBase.__solve(
+                                $(prob_syms[i]), alg.algs[$(i)], args...;
+                                stats, alias_u0, verbose, kwargs...)
                             if SciMLBase.successful_retcode($(cur_sol))
                                 if alias_u0
                                     copyto!(u0, $(cur_sol).u)