Questions tagged [computational-experiments]
For questions on experimentation in computational OR, for example, the performing, analysing and reporting of experiments.
8
questions
6
votes
2
answers
2k
views
Is it alright to display mean CPU usage of algorithm instead of CPU cores available?
In many OR articles I have read, there is a numerical experiments part which explains the configuration used and in particular, the number of CPU available.
However, I am obliged to run my experiments ...
- 741
5
votes
0
answers
124
views
Scale of largest CPLEX/Gurobi execution
I am trying to understand the CO2 emission of large scale optimization using CPLEX or Gurobi. Is there a published literature which addresses the compute usage of large scale executions?
- 251
2
votes
2
answers
133
views
Literature for building solver portfolios
A portfolio of solvers is a collection of solvers with different configurations that share CPU time, CPU cores, and memory resources and try to get an answer as soon as possible. Solvers might also ...
- 4,037
2
votes
1
answer
93
views
confusing results of two models with different complexity
i have two models that address the same problem.
the first one is :
the second one is:
for different instances for the same size (n=30) i found the following results ( the first column on the left ...
- 423
7
votes
2
answers
305
views
How to simulate computational execution time?
I am working with some computational experiments with an Integer Programming (IP) formulation over a well-known set of instances from the literature of my problem. And I would like to compare my ...
- 1,240
12
votes
2
answers
513
views
Job Shop Scheduling: what objectives are harder?
It is well known that job shop scheduling problems are notoriously hard from a computational point of view. Many papers exist for the makespan objective, and some report on min sum objectives (like ...
- 5,929
13
votes
2
answers
998
views
How fair is limit solver threads when publishing?
Reading gurobi reference manual I found this:
We have also found that certain classes of MIP models benefit from reducing the thread count, often all the way down to one thread. Starting multiple ...
- 513
22
votes
3
answers
1k
views
How to (graphically) present computational results?
I am interested in evaluating and demonstrating various aspects of the performance of general solvers for mathematical optimization problems (in particular MILPs). I assume that I have a good testset ...
- 5,929