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Implement setparameters! for LP model/solver #48

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Jun 24, 2018
Merged

Implement setparameters! for LP model/solver #48

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79d3cb0
add MPB.setparameters! for GLPK{Solver,MathProgModel}LP
rschwarz Jun 24, 2018
554f789
add more tests
rschwarz Jun 24, 2018
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32 changes: 32 additions & 0 deletions src/GLPKInterfaceLP.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -71,6 +71,38 @@ function MPB.LinearQuadraticModel(s::GLPKSolverLP)
return lpm
end

function MPB.setparameters!(s::GLPKSolverLP; mpboptions...)
opts = collect(Any, s.opts)
for (optname, optval) in mpboptions
if optname == :TimeLimit
push!(opts, (:tm_lim,round(Int,1000*optval))) # milliseconds
elseif optname == :Silent
if optval == true
push!(opts, (:msg_lev,GLPK.MSG_OFF))
end
else
error("Unrecognized parameter $optname")
end
end
s.opts = opts
nothing
end

function MPB.setparameters!(m::GLPKMathProgModelLP; mpboptions...)
for (optname, optval) in mpboptions
if optname == :TimeLimit
m.param.tm_lim = round(Int,1000*optval)
elseif optname == :Silent
if optval == true
m.param.msg_lev = GLPK.MSG_OFF
m.smplxparam.msg_lev = GLPK.MSG_OFF
end
else
error("Unrecognized parameter $optname")
end
end
end

function MPB.optimize!(lpm::GLPKMathProgModelLP)
lpm.infeasible_bounds = false
lp = lpm.inner
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13 changes: 13 additions & 0 deletions test/params.jl
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Expand Up @@ -6,3 +6,16 @@
@test mipm.smplxparam.it_lim == 5910
@test mipm.param.tol_obj == 1.52e-3
end

@testset "Set MPB parameters" begin
# setparameters! on model
lpm = MathProgBase.LinearQuadraticModel(GLPKSolverLP())
MathProgBase.setparameters!(lpm, TimeLimit=23.0)
@test lpm.param.tm_lim == 23000.0

# setparameters! on solver
lps = GLPKSolverLP()
MathProgBase.setparameters!(lps, TimeLimit=23.0)
lpm2 = MathProgBase.LinearQuadraticModel(lps)
@test lpm2.param.tm_lim == 23000.0
end