Pyomo parallel processing to solve an instance

Question

I'm following the steps here in order to use all my computing power (10-core Intel i9 CPU) and solve a one-instance abstract Pyomo model. However, it seems that the solver is just using one CPU core and it takes more than 2 days to return a solution for a 50-node input (with 10 nodes it just takes seconds.) any help about making Pyomo model run in all available CPU cores?

Thanks

Answer 1

Thanks to @Erwin Kalvelagen for pointing out GLPK's serial nature, after doing some experiments I migrated to Gurobi and now all my 10 CPU cores are being used by the Pyomo model.