How to trigger SCIPsolveConcurrent?

[freemin7]

SCIP provides concurrent solving https://www.scipopt.org/doc-5.0.1/html/CONCSCIP.php. How would i go about triggering it?

[matbesancon]

First thing would be to compile SCIP with the suitable options.

Second would be to modify slightly the optimize! function to call SCIPsolveConcurrent instead of SCIPsolve here:

function MOI.optimize!(o::Optimizer)
    set_start_values(o)
    if o.objective_sense == MOI.FEASIBILITY_SENSE
        MOI.set(o, MOI.ObjectiveFunction{SAF}(), SAF([], 0.0))
    end
    @SCIP_CALL SCIPsolve(o)
    return nothing
end

[matbesancon]

PS: up to date documentation page is here:
https://www.scipopt.org/doc-8.0.1/html/CONCSCIP.php

[matbesancon]

I'll close this one for #242 which is similar.