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Fix setting MOI.TimeLimitSec #299

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Jul 22, 2024
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Fix setting MOI.TimeLimitSec #299

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9 changes: 7 additions & 2 deletions src/MOI_wrapper.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -274,14 +274,19 @@ MOI.supports(model::Optimizer, ::MOI.TimeLimitSec) = true

function MOI.get(model::Optimizer, ::MOI.TimeLimitSec)
p = Ref{Cdouble}(0.0)
@_checked KN_get_double_param(model.inner, KN_PARAM_MAXTIMECPU, p)
@_checked KN_get_double_param(model.inner, KN_PARAM_MAXTIMEREAL, p)
return p[] == 1e8 ? nothing : p[]
end

function MOI.set(model::Optimizer, ::MOI.TimeLimitSec, value)
# By default, maxtime is set to 1e8 in Knitro.
limit = something(value, 1e8)
@_checked KN_set_double_param(model.inner, KN_PARAM_MAXTIMECPU, limit)
# KNITRO does not have a single option to control the global time limit, so
# we set various options.
# MAXTIME_REAL is the base option, which applies if the problem is a NLP.
@_checked KN_set_double_param(model.inner, KN_PARAM_MAXTIMEREAL, limit)
# MIP_MAXTIME_REAL applies if the problem is a MINLP
@_checked KN_set_double_param(model.inner, KN_PARAM_MIP_MAXTIMEREAL, limit)
return
end

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