I am trying to solve PyPSA-Eur model using HiGHS solver. I see output like following:
153 fixed variables remaining
118 fixed variables remaining
83 fixed variables remaining
48 fixed variables remaining
14 fixed variables remaining
2 7.98e+05 1.43e+04 9.57457108e+12 -3.25361558e+16 5.27e+10 51577s
3 7.60e+05 1.16e+04 1.50546351e+13 -2.91513709e+16 5.37e+10 63745s
4 5.68e+05 6.43e+03 2.54314111e+13 -2.26125497e+16 4.77e+10 71036s
5 2.21e+05 2.66e+03 3.05656310e+13 -1.39062228e+16 2.08e+10 106463s
Don't know exactly what to infer from this, how much time it's going to take? Can someone please decipher this for me. Thanks!
This looks still like the solver is a long way from finishing.
Given the long run-time already, I think you need to downscale the problem size to be able to solve it with HiGHS.
While HiGHS is open-source, it's not as powerful as the commercial Gurobi.