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IBM ILOG CPLEX Optimization Studio pros and cons

Vendor: IBM
4.3 out of 5
 

IBM ILOG CPLEX Optimization Studio Pros review quotes

it_user766584 - PeerSpot reviewer
Research Assistant
Nov 2, 2017
CPLEX is a tool that offers something which cannot be done by statistics or machine learning tools.
it_user766614 - PeerSpot reviewer
Post Doctorate Research Fellow at a healthcare company with 10,001+ employees
Nov 2, 2017
If I had a colleague who was considering CPLEX I would tell them to just use it.
it_user766608 - PeerSpot reviewer
Assistant Professor
Nov 2, 2017
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.
Learn what your peers think about IBM ILOG CPLEX Optimization Studio. Get advice and tips from experienced pros sharing their opinions. Updated: May 2026.
893,244 professionals have used our research since 2012.
it_user766596 - PeerSpot reviewer
Scientist at a tech services company with 10,001+ employees
Nov 2, 2017
We use CPLEX because it is the industry standard.
Graduateae23 - PeerSpot reviewer
Graduate Research Assistant
Nov 2, 2017
Not me, but my group members published high-quality papers relying on CPLEX.
it_user766620 - PeerSpot reviewer
Graduate Teaching Assistant
Nov 2, 2017
From my experience, it's the best out there for complex models.
PhdStudeba2c - PeerSpot reviewer
Phd Student at a university with 5,001-10,000 employees
Nov 2, 2017
Usually it solves problems really fast, so that's what's most important to me.
it_user766626 - PeerSpot reviewer
Phd Student at University Of Florida
Nov 2, 2017
It is easy to write a code in CPLEX.
it_user766593 - PeerSpot reviewer
Graduate Research Assistant at University Of Tennessee Space Institute
Nov 2, 2017
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, and I am confident that I can rely on the solutions that it gives me.
it_user766590 - PeerSpot reviewer
Graduate Research Assistant at a university with 5,001-10,000 employees
Nov 2, 2017
It is good at solving models and it offers a lot of different solution methodologies that are already built-in, so it is pretty fast.
 

IBM ILOG CPLEX Optimization Studio Cons review quotes

it_user766584 - PeerSpot reviewer
Research Assistant
Nov 2, 2017
If a university is seeking challenging problems in an area which is heuristic optimization or non-linear optimization, I do not think that CPLEX is the best software to do that.
it_user766614 - PeerSpot reviewer
Post Doctorate Research Fellow at a healthcare company with 10,001+ employees
Nov 2, 2017
I don't know why, but sometimes it works very fast and other times I cannot solve it in a reasonable amount of time.
it_user766608 - PeerSpot reviewer
Assistant Professor
Nov 2, 2017
Every single version has some bug, which I somehow always encounter. Some of these issues are really severe and literally crash the engine.
Learn what your peers think about IBM ILOG CPLEX Optimization Studio. Get advice and tips from experienced pros sharing their opinions. Updated: May 2026.
893,244 professionals have used our research since 2012.
it_user766596 - PeerSpot reviewer
Scientist at a tech services company with 10,001+ employees
Nov 2, 2017
One area in which I would like to see improvements made is in parallelization.
Graduateae23 - PeerSpot reviewer
Graduate Research Assistant
Nov 2, 2017
Compared with C++, which I used before, for larger transportation networks, CPLEX will take a longer time.
it_user766620 - PeerSpot reviewer
Graduate Teaching Assistant
Nov 2, 2017
The layout of the program, the way the windows appear, is kind of confusing at the beginning to get a hold on.
PhdStudeba2c - PeerSpot reviewer
Phd Student at a university with 5,001-10,000 employees
Nov 2, 2017
I did have some problems with error messages where, for example, it's infeasible, but instead of telling you it's infeasible it will give you something else.
it_user766626 - PeerSpot reviewer
Phd Student at University Of Florida
Nov 2, 2017
What I'm looking for is actually nonlinear programming. I don't think CPLEX has that.
it_user766593 - PeerSpot reviewer
Graduate Research Assistant at University Of Tennessee Space Institute
Nov 2, 2017
You need to learn how to play with the settings so it doesn't crash. But if you run on the default settings and your program size is large, it might crash after about an hour.
it_user766590 - PeerSpot reviewer
Graduate Research Assistant at a university with 5,001-10,000 employees
Nov 2, 2017
If there is a lot of data, I have a hard time solving it with CPLEX.