Get node logs from docplex

Question

CPLEX prints out nice node logs, how can I get them using docplex? I've tried changing content.solver.verbose and log_output but I'm not getting the information (current solution, gap) to print.

I'm using this code:

context.solver.log_output = True
context.solver.verbose = 5
mdl = CpoModel()
mdl.solve()

With verbose = 5, all of the branch decisions are printed (lots of junk) With verbose = 4, the gap is not printed

score 4 · Answer 1 · answered Mar 08 '18 at 09:15

4

The following works for me:

model = build_model()
model.context.solver.log_output = True
model.solve()

If this does not work for you, can you please provide some sample code so that we can have a look at it ? Thanks

answered Mar 08 '18 at 09:15

Viu-Long

41
3

I have added code, now the issue is that I can't just print out the gap – MLE Mar 11 '18 at 22:47

score 0 · Accepted Answer · answered Mar 11 '18 at 23:01

0

I ended up using the code in the question and filtering output with grep.

answered Mar 11 '18 at 23:01

MLE

69
6

Get node logs from docplex

2 Answers2