Hello

I am new to cvx and matlab. When I setup cvx in matlab using “cvx_setup” command, it sucessfully installs but I get the following warnings:

"

Setting CVX paths…already set!

Searching for solvers…Warning: Unknown parameter: ‘isvname’

In cvx_gurobi

In cvx_gurobi

In cvx_setup (line 83)

Warning: Unknown parameter: ‘appname’

In cvx_gurobi

In cvx_gurobi

In cvx_setup (line 83)

Warning: Unknown parameter: ‘isv_key’

In cvx_gurobi

In cvx_gurobi

In cvx_setup (line 83)

Warning: Unknown parameter: ‘isvname’

In cvx_gurobi

In cvx_gurobi

In cvx_setup (line 83)

Warning: Unknown parameter: ‘appname’

In cvx_gurobi

In cvx_gurobi

In cvx_setup (line 83)

Warning: Unknown parameter: ‘isv_key’

In cvx_gurobi

In cvx_gurobi

In cvx_setup (line 83)

5 shims found.

6 solvers initialized (* = default):

Gurobi 7.52 {cvx}\gurobi\w64

Gurobi_2 8.11 C:\gurobi811\win64\matlab

- Gurobi_3 8.11 C:\gurobi811\win64\matlab

Mosek 8.0.0.60 {cvx}\mosek\w64

SDPT3 4.0 {cvx}\sdpt3

SeDuMi 1.34 {cvx}\sedumi

1 solver skipped:

GLPK

Could not find a GLPK installation.

Saving updated preferences…done.

Testing with a simple model…Warning: Unknown parameter: ‘isvname’

In cvx_gurobi

In cvx_run_solver (line 50)

In cvx_gurobi

In cvxprob/solve (line 429)

In cvx_end (line 88)

In cvx_setup (line 213)

Warning: Unknown parameter: ‘appname’

In cvx_gurobi

In cvx_run_solver (line 50)

In cvx_gurobi

In cvxprob/solve (line 429)

In cvx_end (line 88)

In cvx_setup (line 213)

Warning: Unknown parameter: ‘isv_key’

In cvx_gurobi

In cvx_run_solver (line 50)

In cvx_gurobi

In cvxprob/solve (line 429)

In cvx_end (line 88)

In cvx_setup (line 213)

done!

"

It gave me same message when I ran the example problem from cvx website:

">> m =20;

n =10;

p = 4;

A = random(m,n);

A = randn(m,n);

b = randn(m,1);

C=randn(p,n);

d = randn(p,1);

e = rand;

cvx_begin

variable x(n)

minimize( norm(A*x - b,2))
subject to
C*x==d

norm(x,Inf)<=e

cvx_end

Error using random (line 68)

The NAME argument must be a distribution name.

## Calling Gurobi_3 8.11: 52 variables, 34 equality constraints

Academic license - for non-commercial use only

Warning: Unknown parameter: ‘isvname’

In cvx_gurobi

In cvx_run_solver (line 50)

In cvx_gurobi

In cvxprob/solve (line 429)

In cvx_end (line 88)

Warning: Unknown parameter: ‘appname’

In cvx_gurobi

In cvx_run_solver (line 50)

In cvx_gurobi

In cvxprob/solve (line 429)

In cvx_end (line 88)

Warning: Unknown parameter: ‘isv_key’

In cvx_gurobi

In cvx_run_solver (line 50)

In cvx_gurobi

In cvxprob/solve (line 429)

In cvx_end (line 88)

Optimize a model with 34 rows, 52 columns and 290 nonzeros

Coefficient statistics:

Matrix range [1e-03, 3e+00]

Objective range [0e+00, 0e+00]

Bounds range [0e+00, 0e+00]

RHS range [0e+00, 0e+00]

Presolve removed 34 rows and 52 columns

Presolve time: 0.06s

Presolve: All rows and columns removed

Iteration Objective Primal Inf. Dual Inf. Time

0 0.0000000e+00 0.000000e+00 0.000000e+00 0s

## Solved in 0 iterations and 0.11 seconds

Optimal objective 0.000000000e+00

Status: Solved

Optimal value (cvx_optval): +0

"

What did I do wrong? What should I do to avoid this warning everytime?

Thank you in advance!