如何设置 Pyomo 求解器超时? [英] How to set Pyomo solver timeout?

问题描述

如何设置 Pyomo solve() 方法的超时时间?更具体地说，告诉pyomo，在x秒后，返回当前找到的最优解?

How to set the timeout for Pyomo solve() method ? More specifically, to tell pyomo, after x seconds, return the optimal solution currently found ?

推荐答案

所以我能够通过 pyomo 文档找到答案，我认为分享会有所帮助.

So I was able to find the answer via pyomo documentation and I thought it would be helpful to share.

设置 Pyomo solve() 方法的超时时间:

To set the timeout for Pyomo solve() method:

solver.solve(model, timelimit=5)

然而，如果求解器没有终止，这将抛出 pyutilib.common._exceptions.ApplicationError: "Solver (%s) did not exit normal" % self.name ).我真正想要的是将 timelimit 选项传递给我的求解器.在我的 cplex 求解器的例子中，代码将是这样的:

However this will throw pyutilib.common._exceptions.ApplicationError: "Solver (%s) did not exit normally" % self.name ) if the solver is not terminated. What I really want is to pass the timelimit option to my solver. In my case of cplex solver, the code will be like this:

solver = SolverFactory('cplex')
solver.options['timelimit'] = 5
results = solver.solve(model, tee=True)

更多关于 pyomo 和 cplex 文档.

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