I’ve writen a simple model that optimize item location assignment for a warehouse of 30 000 locations.
My code works with 3 items and gurobi or cplex, but :
- With CBC : Not working after 1 minutes even with only 3 items …
- With Highs : Error -1 for call Highs_passH
- With 3000 items and with Gurobi or Cplex : Unexpected end of file while reading AMPL output.
But it’s a so simple model, and data are not huge. Can you help me ?
May be also due to prev_loc, I want to add additional cost if we need to move so change location.
May be i need to initalize it
example.mod (32.6 KB)