IBM ILOG CPLEX Optimization Studio Reviews

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Real User
Assistant Professor
Nov 16 2017

What is most valuable?

I would say its extensibility, and the ability to do both high-level modeling and also go all the way to the engine extensions.

How has it helped my organization?

Whenever you do optimization, having a good CP solver or integer programming solver is a necessity. So CPLEX is a tool that I cannot do without.

What needs improvement?

What I would love to see is better accessibility of the engine extensions. Currently you can do really low-level stuff, and it's great, but you can… more»

If you previously used a different solution, which one did you use and why did you switch?

I started using CPLEX because I needed access to an integer programming solver and the CP solver. I wasn't using another product beforehand.

What other advice do I have?

When researching a product I consider what the quality, the support, and the documentation are like. The documentation for CPLEX, specifically the… more»
Javad Seif
Real User
Graduate Research Assistant at University Of Tennessee Space Institute
Nov 15 2017

What is most valuable?

I think that it is user-friendly, compared to other methods. I also like the optimization studio in Windows. It is really awesome for someone who wants to just start using CPLEX… more»

What needs improvement?

The infeasibility checks should be easier to set up. Currently, you have to name your constraints. It is really hard to find the infeasible constraints. If they could add that to the… more»

If you previously used a different solution, which one did you use and why did you switch?

Beforehand, I was using GAMS for my masters degree. Then my advisor recommended using CPLEX. Once I installed it I found that I loved the OPL and how easy it was to write down the… more»

What other advice do I have?

I would definitely recommend CPLEX to colleagues who are thinking of using it. It is very reliable and there is a lot of programming behind it. I am confident that I can rely on the… more»
Real User
Phd Candidate
Nov 13 2017

What is most valuable?

The ability to actually incorporate some stuff that you have developed within CPLEX's big general framework. It is a very good tool. It's very user-friendly with its language, OPL. It… more»

What needs improvement?

One of the new things in CPLEX is the new benders, the composition that does it automatically. One of the things I realized while testing it is that when it does it at the root node… more»

If you previously used a different solution, which one did you use and why did you switch?

I was not using any solutions previously. I ended up working on CPLEX because my adviser told me to.

What other advice do I have?

I would recommend to anyone who is looking to implement CPLEX that they read the documentation. I do not think that it is available on PDF, it is all on HTML now, but they can find… more»
Real User
Research Assistant
Nov 20 2017

What is most valuable?

I really like that I can see the results properly. I can click on the results and then look at them to tell how the results are coming out.

What needs improvement?

In future versions, I would like to see them include different kinds of optimization problem techniques. The performance could also be faster. One more thing that I would like to see… more»

If you previously used a different solution, which one did you use and why did you switch?

CPLEX was the first optimization tool that I have used. I started using CPLEX when a supervisor in my previous company told me to try it out.

What other advice do I have?

When selecting a vendor I would check if the performance is faster, the results are more accurate, and the GUI is more user-friendly than the competition. I might recommend CPLEX to a… more»
Real User
Research Assistant at a university with 5,001-10,000 employees
Nov 09 2017

What is most valuable?

Simplicity, and it's very comprehensive, a lot of information is there. And because many people are using it you can find almost whatever your question is online. Another feature that… more»

What needs improvement?

I think one important feature to improve would be the speed of solving the problems. I know that CPLEX and other companies are trying to build new models, a new solution base to… more»

If you previously used a different solution, which one did you use and why did you switch?

When the problem is too large we use Gurobi at the same time. There are ways to connect these things. It's a little hard but it's still possible. So, Gurobi as a solver sometimes. I… more»

What other advice do I have?

Regarding advice to a colleague who is considering using CPLEX, I would say look into a very simple example. And there are handbooks available to guide you in CPLEX. Start to go… more»
Zheng Zhang
Real User
Post Doctorate Research Fellow at a healthcare company with 10,001+ employees
Nov 16 2017

How has it helped my organization?

It helps me a lot. CPLEX is a tool that can kind of visualize your prediction and help you understand the problem better. For example, for every SOS you can just format a model, which… more»

What needs improvement?

I guess I would like to see it become faster and more user-friendly. I think CPLEX is very flexible for different languages so maybe they can provide more detailed documentation on… more»

If you previously used a different solution, which one did you use and why did you switch?

When I was an undergrad I used Nengo but I heard about CPLEX from my teacher in university, as well as from from friends who recommended it. I also used Gurobi.

What other advice do I have?

If I had a colleague who was considering CPLEX I would tell them to just use it. It is very well-known and has a good reputation. So when you have a model that you solve with CPLEX… more»
Real User
Professor
Nov 15 2017

What is most valuable?

I think that the most valuable feature is the integer program. It is powerful. I haven’t used CPLEX for many years and I just recently used it again. I needed to familiarize myself… more»

What needs improvement?

I would like see a more user-friendly interface, especially for new students. I would also like to have more options to choose from. Different problems have different options. We… more»

If you previously used a different solution, which one did you use and why did you switch?

Before CPLEX I used to use GAMS and I still use both of them. GAMS has different links with different solvers. The solvers are developed by different companies but the functions are… more»

What other advice do I have?

CPLEX is a professional and very capable tool for large-scale integer and mixed integer, even linear. I always recommend this software to my students, both undergraduate and grad… more»
MikeHewitt
Real User
Associate Professor at Loyola University Chicago
Nov 15 2017

What is most valuable?

The way you can interface with it from a programming perspective, the implementation, is very useful. And, just generally, its performance.

How has it helped my organization?

CPLEX is fairly easy to use and it does provide very high quality solutions which make my algorithms run faster and better.

If you previously used a different solution, which one did you use and why did you switch?

CPLEX is sort of what I learned on. I will admit that I have used other products too, but CPLEX is what I know the best.

What other advice do I have?

It is still not clear to me what the GPU potential is for CPLEX. Can you leverage GPU technology, essentially? I think that would be interesting given how many processors there seem… more»
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What is IBM ILOG CPLEX Optimization Studio?

IBM ILOG CPLEX Optimization Studio (COS) is an enterprise analytical decision support toolkit. It enables rapid development and deployment of decision optimization models using mathematical and constraint programming. COS combines a fully featured integrated development environment (IDE) that supports Optimization Programming Language (OPL) and the high-performance CPLEX and CP Optimizer solvers. COS enables you to optimize your business decisions, develop and deploy optimization models quickly, and create real-world applications that can significantly improve business outcomes.

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IBM ILOG CPLEX
IBM ILOG CPLEX Optimization Studio customers

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