Unable to use CVX due to some license issue!

1

I was using CVX.

I had reinstall MATLAB.

I also reinstalled CVX, now I get the following from cvx_setup:

CVX: Software for Disciplined Convex Programming (c)2014 CVX Research
Version 2.2, Build 1148 (62bfcca) Tue Jan 28 00:51:35 2020

Installation info:
Path: /Users/admin/Documents/cvx
MATLAB version: 24.2 (R2024b)
OS: Mac OS X aarch64 version 15.1.1
Java version: 11.0.25
Verfying CVX directory contents:
WARNING: The following files/directories are missing:
/Users/admin/Documents/cvx/sedumi/.travis.yml
These omissions may prevent CVX from operating properly.
ERROR: one or more MEX files for this platform are missing.
These files end in the suffix “.mexmaca64”. CVX will not operate
without these files. Please visit
Downloading CVX | CVX Research, Inc.
And download a distribution targeted for your platform.
Preferences:
Path: /Users/admin/Library/Application Support/MathWorks/MATLAB/cvx_prefs.mat
UNEXPECTED ERROR: ------------------------------
Unrecognized function or variable ‘command_str’.
Error in cvx_license
Error in cvx_license
Error in cvx_version (line 309)
cvx_license( args{:} );
^^^^^^^^^^^^^^^^^^^^^^
Error in cvx_setup (line 20)
cvx_version( ‘-install’, varargin{:} );
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
------------------------------------------------
Please report this error to support, and include entire output of
CVX_SETUP in your support request.

2

Install CVX 2.2.2 from GitHub - cvxr/CVX: A MATLAB system for disciplined convex programming .

The only license required is the solver license for any non-free solver you call (Gurobi or Mosek).

It also has native support for Mac M1.

3

Thanks!

2.2.2 seems much easier to install.

However, earlier I was using MOSEK also, but now it seems MOSEK is not there by default (from earlier set-up)

For example when I try to run

cvx_begin %sdp
cvx_solver Mosek
variable alphaa

I get the error

Error using cvx_solver (line 46)
Unknown, unusable, or missing solver: Mosek

Error in LinSchoberOpt (line 12)
cvx_solver Mosek
^^^^^^^^^^
Error in Center_Fed_SLA_40 (line 23)
Wide_Opt = LinSchoberOpt (abs(U(:,1)), Wide_Try, RIS, [-0.3827 0.3827]);

CVX: Software for Disciplined Convex Programming (c)2014 CVX Research
Version 2.2, Build 9 (a0a77590) Tue Apr 23 19:28:09 2024

Installation info:
Path: /Users/admin/Documents/cvx
MATLAB version: 24.2 (R2024b)
OS: Mac OS X aarch64 version 15.1.1
Java version: 11.0.25
Verfying CVX directory contents:
No missing files.
Preferences:
Path: /Users/admin/Library/Application Support/MathWorks/MATLAB/cvx_prefs.mat

Setting CVX paths…done.
Saving updated path…done.
Searching for solvers…5 shims found.
3 solvers initialized (* = default):
Gurobi 11.03 /Library/gurobi1103/macos_universal2/matlab

  • SDPT3 4.0 {cvx}/sdpt3
    SeDuMi 1.02, {cvx}/sedumi
    2 solvers skipped:
    GLPK
    Could not find a GLPK installation.
    Mosek unknown
    Could not find a MOSEK MEX file.
    Saving updated preferences…done.
    Testing with a simple model…done!

To change the default solver, type “cvx_solver <solver_name>”.
To save this change for future sessions, type “cvx_save_prefs”.
Please consult the users’ guide for more information.

4

There aren’t any commercial solvers included, which is good, because they were old versions anyway.

You just install your own Mosek and let cvx_setup detect it.

https://docs.mosek.com/latest/toolbox/install-interface.html

5

I installed MOSEK, but then the cvx does not detect it!

6

Most likely you installed it incorrectly, or didn’t add it to the path.

Please follow all steps in 4 Installation — MOSEK Optimization Toolbox for MATLAB 10.2.8, including the test with mosekdiag, use the troubleshooting info to correct any errors, and when you are sure Mosek works stand-alone then run cvx_setup.

7

Indeed, the path was wrong! All fine now, thanks!