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FisSal2011: Implement faster get/set basis for Gurobi

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This commit is contained in:
Alinson S. Xavier
2025-08-08 22:44:43 -05:00
parent 9713873a34
commit e2e69415c1
3 changed files with 157 additions and 37 deletions
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7
src/Cuts/tableau/gmi_dual.jl
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@@ -332,6 +332,7 @@ function collect_gmi_FisSal2011(
pool_cut_hashes = Set{UInt64}()
pool_size_mb = 0
tableau_density::Float32 = 0.05
basis_cache = nothing
λ, Δ = 0, 0
μ = 10
end
@@ -417,8 +418,10 @@ function collect_gmi_FisSal2011(
end
@timeit "Optimize LP (lagrangian)" begin
basis_cache === nothing || set_basis(model_s, basis_cache)
set_silent(model_s)
optimize!(model_s)
basis_cache = get_basis(model_s)
status = termination_status(model_s)
if status != MOI.OPTIMAL
error("Non-optimal termination status: $status")
@@ -473,8 +476,10 @@ function collect_gmi_FisSal2011(
end
if mod(round - 1, interval_read_tableau) == 0
@timeit "Select tableau rows" begin
@timeit "Get basis" begin
basis = get_basis(model_s)
end
@timeit "Select tableau rows" begin
selected_rows =
select_gmi_rows(data_s, basis, sol_frac, max_rows = max_cuts_per_round)
end