My objective function has 350 variables with non linear constraints. ga and patternsearch are ineffective using default settings. What can i do?

I tried fmincon, ga and patternsearch but cant get feasible solution. Please help

[Walter Roberson]

Perhaps one of the products mentioned at https://en.m.wikipedia.org/wiki/Quadratic_programming will help.

[Nayan Rawat]

I don't think it's quadratic programming

[Nayan Rawat]

Can I find an open source library code?

[Walter Roberson]

If you look at the list on the Wikipedia page, you will see that several of the packages implement a number of different kinds of nonlinear optimization.

[Walter Roberson]

Some of the projects in that list are open source.

Several people have asked questions about using CPLEX. CPLEX is not open source, but it is free for academic use. (I am not academic so I am not eligible to use it that way.)

Some people have asked in the past about using TOMCAT. I gather that for some of the algorithms, TOMCAT is significantly faster than MATLAB is. It is not open source, though.

I am not familiar with the other ones at all.

[Nayan Rawat]

Thanks, its TOMLAB btw.