Pyomo: Access the solve time from solver

[sheif...@gmail.com]

Hello,

I am trying to test scalability for a model by timing a variety of sized problems. I am currently using Python's "time" feature before and after calling opt.solve(M) but for comparison I would also like to be able to access my solver's (Gurobi's) built-in timer for the actual solve itself (rather than the overall time for Pyomo to write the MIP and then for Gurobi to solve). However I am running into issues of accessing that value. Please advise! 

Thanks in advance! 

She'ifa

PhD Student (Mathematics)

[Michael Bynum]

If you use the direct or persistent interface to Gurobi (https://pyomo.readthedocs.io/en/stable/advanced_topics/persistent_solvers.html), you can access the wall clock time:

res = opt.solve(m)

res.solver.wallclock_time

Michael