When I run command solve on HiGHS solver, I get only two following lines :
Running HiGHS 1.5.3 [date: 2023-05-16, git hash: 594fa5a9d-dirty]
Copyright (c) 2023 HiGHS under MIT licence terms
When the solving process finish, I finally get the solver output (all the steps, gap, best bound etc.). But other solvers in appsi (like CPLEX or Cbc) show the output in real time. Is there some issue in HiGHS which causes this?
My usage is basic, it occurs on any type of problem/model I used:
from pyomo.contrib import appsi
self.slvr = appsi.solvers.Highs()
self.slvr.config.stream_solver = True
self.results = self.slvr.solve(self.model)
After the process is done, I have this output, which is nice, but why doesn't it show up iteratively during the solution?
This is just a part of the output I would like to see in real time, but don't.
Running HiGHS 1.5.3 [date: 2023-05-16, git hash: 594fa5a9d-dirty]
Copyright (c) 2023 HiGHS under MIT licence terms
Presolve is switched off
Objective function is integral with scale 1000
Solving MIP model with:
77543 rows
38340 cols (35784 binary, 2556 integer, 0 implied int., 0 continuous)
199377 nonzeros
Nodes | B&B Tree | Objective Bounds | Dynamic Constraints | Work
Proc. InQueue | Leaves Expl. | BestBound BestSol Gap | Cuts InLp Confl. | LpIters Time
0 0 0 0.00% 1352615732.565 -inf inf 0 0 0 0 0.1s
0 0 0 0.00% 112630283.4806 -inf inf 0 0 6 21209 2.6s
0 0 0 0.00% 112479090.6762 -inf inf 581906 886 8 32472 49.9s
0 0 0 0.00% 112422016.3206 -inf inf 506643 4425 16 37271 61.6s
0 0 0 0.00% 112409882.2589 -inf inf 138654 5388 24 39246 66.6s
0 0 0 0.00% 112400684.7633 -inf inf 160629 7430 32 41778 73.6s
0 0 0 0.00% 112399926.1061 -inf inf 66671 8395 231 43152 80.2s
0 0 0 0.00% 112399408.1677 -inf inf 39189 9159 247 44114 86.7s
0 0 0 0.00% 112397259.7877 -inf inf 27314 10599 263 45732 91.9s
0 0 0 0.00% 112395826.4105 -inf inf 23112 11147 287 46657 100.1s
0 0 0 0.00% 112395778.0534 -inf inf 20018 9589 311 47281 105.3s
0 0 0 0.00% 112395775.6758 -inf inf 12427 7372 1020 64073 150.2s
15 0 1 0.01% 112395775.6758 -inf inf 12429 7372 1889 195917 270.1s
80 1 7 0.01% 112395775.6758 -inf inf 12429 7372 2144 199921 277.2s
Restarting search from the root node
Presolve is switched off
Model after restart has 77543 rows, 38340 cols (14220 bin., 24120 int., 0 impl., 0 cont.), and 199377 nonzeros
106 0 0 0.00% 112395775.5593 -inf inf 7372 0 0 201033 281.1s
106 0 0 0.00% 112395775.5593 -inf inf 7372 6706 4 219046 286.5s
System info:
Pyomo version: 6.6.2
Python version: 3.10.12
Operating system: Win 10
How Pyomo was installed (PyPI, conda, source): PyPI
Solver (if applicable): appsi.solvers.Highs
When I run command solve on HiGHS solver, I get only two following lines :
When the solving process finish, I finally get the solver output (all the steps, gap, best bound etc.). But other solvers in appsi (like CPLEX or Cbc) show the output in real time. Is there some issue in HiGHS which causes this?
My usage is basic, it occurs on any type of problem/model I used:
After the process is done, I have this output, which is nice, but why doesn't it show up iteratively during the solution?
This is just a part of the output I would like to see in real time, but don't.
System info:
Pyomo version: 6.6.2
Python version: 3.10.12
Operating system: Win 10
How Pyomo was installed (PyPI, conda, source): PyPI
Solver (if applicable): appsi.solvers.Highs