6

Short answer: you can't with any decent level of accuracy. The best you can do is ballpark comparisons. There are so many factors that affect the outcome, that you can maybe get within 20% difference on an identical machine with a decent degree of confidence. I know this for a fact because we benchmark on many identical machines and results always vary. ...


4

In support of other answers and suggestions that you just run the other algorithm on your hardware, I would argue that failing to match the published results exactly is not necessarily cause for concern. If the authors reran the same examples using their code on their hardware, there is a high likelihood that timings would be at least somewhat different, and ...


3

There are a number of possible explanations (not mutually exclusive). The larger model might have a tighter continuous relaxation. (You can test that by relaxing the integrality restrictions and solving both LPs.) Assuming you are using a solver that has a presolve stage, there may be something in the first model that allows the presolver to tighten things ...


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