I run Julia with 8 threads, as verified by
Threads.nthreads(), but when I try to solve a problem using Juniper I get the warning
Julia was started with less processors than you defined in your options. Start julia with: `julia -p 1. After profiling my code it does seem to be bound to a single thread.
using JuMP, Juniper, Gurobi, Ipopt @show Threads.nthreads() juniper_opt = optimizer_with_attributes(Juniper.Optimizer, "nl_solver" => Ipopt.Optimizer, "mip_solver" => Gurobi.Optimizer, "processors" => Threads.nthreads()) model = Model(juniper_opt) @variable(model, 0 ≤ x ≤ 1) @objective(model, Min, x) optimize!(model)
How can I get Juniper to use all available threads? I’ve seen people referencing this issue but this seems to have been fixed.