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support reuse of Gurobi environment for multistage models #783

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Nov 5, 2024
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2 changes: 2 additions & 0 deletions CHANGELOG.md
Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0

### Added
- Fusion plant optional features for thermal plants (#743).
- Support for reusing the same Gurobi environment for multiple solves when
number of concurrent Gurobi uses is limited (#783).

### Changed
- The `charge.csv` and `storage.csv` files now include only resources with
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2 changes: 1 addition & 1 deletion Project.toml
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@@ -1,7 +1,7 @@
name = "GenX"
uuid = "5d317b1e-30ec-4ed6-a8ce-8d2d88d7cfac"
authors = ["Bonaldo, Luca", "Chakrabarti, Sambuddha", "Cheng, Fangwei", "Ding, Yifu", "Jenkins, Jesse D.", "Luo, Qian", "Macdonald, Ruaridh", "Mallapragada, Dharik", "Manocha, Aneesha", "Mantegna, Gabe ", "Morris, Jack", "Patankar, Neha", "Pecci, Filippo", "Schwartz, Aaron", "Schwartz, Jacob", "Schivley, Greg", "Sepulveda, Nestor", "Xu, Qingyu", "Zhou, Justin"]
version = "0.4.1-dev.8"
version = "0.4.1-dev.9"

[deps]
CSV = "336ed68f-0bac-5ca0-87d4-7b16caf5d00b"
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1 change: 1 addition & 0 deletions docs/src/User_Guide/model_configuration.md
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Expand Up @@ -125,6 +125,7 @@ The following tables summarize the model settings parameters and their default/p

|**Parameter** | **Description**|
| :------------ | :-----------|
|Solver | OPTIONAL name of solver. Default is "HiGHS" effectively. It is necessary to set `Solver: "Gurobi"` when [reusing the same gurobi environment for multiple solves](https://github.com/jump-dev/Gurobi.jl?tab=readme-ov-file#reusing-the-same-gurobi-environment-for-multiple-solves).
|EnableJuMPStringNames | Flag to enable/disable JuMP string names to improve the performance.|
||1 = enable JuMP string names.|
||0 = disable JuMP string names.|
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6 changes: 4 additions & 2 deletions src/case_runners/case_runner.jl
Original file line number Diff line number Diff line change
Expand Up @@ -65,7 +65,8 @@ function run_genx_case_simple!(case::AbstractString, mysetup::Dict, optimizer::A

### Configure solver
println("Configuring Solver")
OPTIMIZER = configure_solver(settings_path, optimizer)
solver_name = lowercase(get(mysetup, "Solver", ""))
OPTIMIZER = configure_solver(settings_path, optimizer; solver_name=solver_name)

#### Running a case

Expand Down Expand Up @@ -137,7 +138,8 @@ function run_genx_case_multistage!(case::AbstractString, mysetup::Dict, optimize

### Configure solver
println("Configuring Solver")
OPTIMIZER = configure_solver(settings_path, optimizer)
solver_name = lowercase(get(mysetup, "Solver", ""))
OPTIMIZER = configure_solver(settings_path, optimizer; solver_name=solver_name)

model_dict = Dict()
inputs_dict = Dict()
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6 changes: 4 additions & 2 deletions src/configure_solver/configure_solver.jl
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Expand Up @@ -19,8 +19,10 @@ Currently supported solvers include: "Gurobi", "CPLEX", "Clp", "Cbc", or "SCIP"
# Returns
- `optimizer::MathOptInterface.OptimizerWithAttributes`: the configured optimizer instance.
"""
function configure_solver(solver_settings_path::String, optimizer::Any)
solver_name = infer_solver(optimizer)
function configure_solver(solver_settings_path::String, optimizer::Any; solver_name::String="")
if isempty(solver_name)
solver_name = infer_solver(optimizer)
end
path = joinpath(solver_settings_path, solver_name * "_settings.yml")

configure_functions = Dict("highs" => configure_highs,
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