Suppressing Output for GLPK MILPs

[kchong]

Apologies in advance if this turns out to be a stupid question.

I'm trying to solve a MILP, using the solver GLPK, and the function
call

sol = cvxopt.glpk.ilp(<parameters>)

And I'd like to suppress the output that GLPK generates. I've used the
command

>>> from cvxopt import solvers
>>> solvers.options['LPX_K_MSGLEV'] = 0

Mentioned on the page:

http://abel.ee.ucla.edu/cvxopt/userguide/coneprog.html#algorithm-parameters

But that doesn't seem to work if I'm not solving an LP. Variants on
the string 'LPX_K_MSGLEV' don't do the trick either. Is there
something that I'm missing?

Thanks, K

[ydisser]

I have the exact same question.

I appreciate any hints.

[Brian Zhang]

I'm having this problem too and this didn't work for me. It seems like setting this option only works for solvers.lp(solver='glpk'). The settings don't affect glpk.ilp at all

On Monday, July 9, 2012 7:51:43 PM UTC-5, Tigran Saluev wrote:

Just for the future googlers like me:
it's about
cvxopt.solvers.options['show_progress'] = False

[David Breuer]

Hi, here is a very late answer, but hopefully helpful for some people:

cvxopt.glpk.options['LPX_K_MSGLEV']=0

It works for me in combination with cvxopt.glpk.ilp.

Best, David

[Stephane Caron]

Using both

    cvxopt.solvers.options['show_progress'] = False
    cvxopt.solvers.options['LPX_K_MSGLEV'] = 0

did not work for me.

A docstring in the source code in src/C/glpk.c points to another parameter:

    cvxopt.solvers.options['msg_lev'] = 'GLP_MSG_OFF'

This one works for me (cvxopt 1.1.7). Hope this helps.

Stephane

[Raymond Wright]

For the sake of anyone who ever googles this, I was only able to get this to work for the ilp solver by using this with a small modification, namely

cvxopt.glpk.options['msg_lev'] = 'GLP_MSG_OFF'