Merge remote-tracking branch 'origin/enh/warmstart' into enh/warmstart-0.6

# Conflicts:
#	src/OrbitDecomposition.jl

src/Orbit-wise.jl

@@ -3,14 +3,14 @@ using SCS
 
 export Settings, OrbitData
 
-immutable Settings
+immutable Settings{T<:AbstractMathProgSolver}
    name::String
    N::Int
    G::Group
    S::Vector
    autS::Group
    radius::Int
-   solver::SCSSolver
+   solver::T
    upper_bound::Float64
    tol::Float64
 end
@@ -37,11 +37,13 @@ function OrbitData(sett::Settings)
    splap² = similar(splap)
    splap² = GroupRings.mul!(splap², splap, splap, pm);
 
-   # Uπs = load(joinpath(name, "U_pis.jld"), "Uπs");
    Uπs = load(joinpath(prepath(sett), "U_pis.jld"), "Uπs")
+   nzros = [i for i in 1:length(Uπs) if size(Uπs[i],2) !=0]
+   Uπs = Uπs[nzros]
    Uπs = sparsify!.(Uπs, sett.tol, check=true, verbose=true)
+
    #dimensions of the corresponding πs:
-   dims = load(joinpath(prepath(sett), "U_pis.jld"), "dims")
+   dims = load(joinpath(prepath(sett), "U_pis.jld"), "dims")[nzros]
 
    m, P = init_model(size(Uπs,1), [size(U,2) for U in Uπs]);
 

src/OrbitDecomposition.jl

@@ -136,13 +136,8 @@ function perm_reps(S::Vector, autS::Group, radius::Int)
    return perm_reps(autS, E)
 end
 
-function reconstruct_sol{T<:GroupElem}(preps::Dict{T, Generic.perm},
-   aUs::Vector, aPs::Vector, adims::Vector)
-
-   idx = [π for π in 1:length(aUs) if size(aUs[π], 2) != 0]
-   Us = aUs[idx]
-   Ps = aPs[idx]
-   dims = adims[idx];
+function reconstruct_sol{T<:GroupElem, S<:Nemo.perm}(preps::Dict{T, S},
+   Us::Vector, Ps::Vector, dims::Vector)
 
    l = length(Us)
    transfP = [dims[π].*Us[π]*Ps[π]*Us[π]' for π in 1:l]

src/Projections.jl

@@ -22,6 +22,11 @@ end
 
 Nemo.isone(p::GroupElem) = p == parent(p)()
 
+function Nemo.dim(χ::PropertyT.PermCharacter)
+    G = PermutationGroup(sum(χ.p))
+    return χ(G())
+end
+
 ## NOTE: this works only for Z/2!!!!
 function (chi::DirectProdCharacter)(g::DirectProductGroupElem)
    return reduce(*, 1, ((-1)^isone(g.elts[j]) for j in 1:chi.i))

src/PropertyT.jl

@@ -137,16 +137,12 @@ function λandP(name::String)
 end
 
 function λandP(name::String, SDP_problem::JuMP.Model, varλ, varP)
-   if exists(joinpath(name, "solver.log"))
-       rm(joinpath(name, "solver.log"))
-   end
-
    add_handler(solver_logger,
       DefaultHandler(joinpath(name, "solver_$(string(now())).log"),
       DefaultFormatter("{date}| {msg}")),
       "solver_log")
 
-   λ, P = compute_λandP(SDP_problem, varλ, varP)
+   λ, P, warmstart = compute_λandP(SDP_problem, varλ, varP)
 
    remove_handler(solver_logger, "solver_log")
 
@@ -155,6 +151,8 @@ function λandP(name::String, SDP_problem::JuMP.Model, varλ, varP)
    if λ > 0
        save(λ_fname, "λ", λ)
        save(P_fname, "P", P)
+       @show warmstart[1]
+       save(joinpath(name, "warmstart.jld"), "warmstart", warmstart)
    else
        throw(ErrorException("Solver did not produce a valid solution!: λ = $λ"))
    end
@@ -162,7 +160,7 @@ function λandP(name::String, SDP_problem::JuMP.Model, varλ, varP)
 
 end
 
-function compute_λandP(m, varλ, varP)
+function compute_λandP(m, varλ, varP; warmstart=nothing)
     λ = 0.0
     P = nothing
     while λ == 0.0
@@ -170,11 +168,16 @@ function compute_λandP(m, varλ, varP)
             solve_SDP(m)
             λ = JuMP.getvalue(varλ)
             P = JuMP.getvalue(varP)
+
+            p_sol = m.internalModel.primal_sol
+            d_sol = m.internalModel.dual_sol
+            s = m.internalModel.slack
+
         catch y
             warn(solver_logger, y)
         end
     end
-    return λ, P
+    return λ, P, (p_sol, d_sol, s)
 end
 
 Kazhdan_from_sgap(λ,N) = sqrt(2*λ/N)