[Clp] Is the project still maintained?

[Dimitris Tzionas]

Thank you all very much for your answers!

Haroldo is right at the point I think.
It is a great thing that Clp is still alive and well, as you say, but it
seems that the documentation of GLPK and lpsolve is more welcoming for a
newcomer.

Could you please propose some resources like simple problem-oriented
tutorials/code snippets that ease the learning curve?
As said, my problem is very easy, and with GLPK I had something running
quite easy,
but I would be interested in using something more modern,
so that any learning curve at this point will work as an investment for
future, more complex needs.

I was planning to use Clp and Osi (as Miles also kindly proposes), but
finding nice resources seems to be not the easiest job.

Thank you again,
dimitris




On Thu, Mar 27, 2014 at 2:40 AM, Haroldo Gambini Santos <
haroldo.santos at gmail.com> wrote:

> Not only actively supported but it is much faster than other open source
> LP solvers (i.e. several times faster and more stable than GLPK or LPSolve).
>
> This is one big difference from GLPK, for example, GLPK has a great
> documentation, but lacks performance and stability in my experience.
>
> Cheers,
>
>
>
> On 26-03-2014 20:40, Julian Hall wrote:
>
>> Dear Dimitris
>>
>> Clp is certainly actively supported and is used so much that you can be
>> confident that it will be around for a long time to come. Its author [John
>> Forrest] continues to fix bugs in it---not that they come up very
>> often---and other people in the COIN-OR community help to keep related
>> interface software up-to-date.
>>
>> However, for various reasons, I can't see much scope for bringing
>> documentation up-to-date or developing it further. Although I'm Project
>> Manager, I'm in no position to develop John's code, and I don't think
>> anyone else is, or is likely to. My assessment of it is that it's pretty
>> good as a revised simplex solver and to improve it significantly would
>> require a lot of work and probably a major re-write. Who might have the
>> time to do this, I cannot imagine.
>>
>> There's still a lot that can be learned from it: Miles Lubin incorporated
>> some utilities into the work I did with him, and my recent PhD [Qi Huangfu]
>> also studied it. Indeed, if you're looking for "a nice linear programming
>> library with a nice c++ API" then maybe it's time that I made Qi's simplex
>> solver available: it's very concise and its performance is comparable with
>> that of Clp. This has been on my "to do" list since Qi finished a year ago
>> so it isn't going to happen before the summer---which in Scotland might
>> mean never!
>>
>> I'd advise you to use Clp and post any queries to clp at list.coin-or.org.
>> There are great folk on this list who seem happy to give advice that I
>> can't.
>>
>> All the best,
>>
>> Julian
>>
>>  I'm looking for a nice linear programming library with a nice c++ API
>>> (preferably not old-fashioned c-like).
>>> Although my current problem is small and simple, it would be nice to gain
>>> familiarity with a library that has a sustainable future.
>>> I'm looking into coin's Clp, but I'm a bit confused regarding the status
>>> of
>>> the project.
>>> Most pages seem to be very old, while some examples were uploaded only 12
>>> months ago.
>>> Could you please comment on the project's status?
>>> Is it actively maintained?
>>>
>>> Best,
>>> dimitris
>>>
>>>
>>
>>
>> Julian Hall (Operational Research MSc Programme Director)
>> --
>> Dr. J. A. Julian Hall, Senior Lecturer, School of Mathematics,
>> University of Edinburgh, JCMB, King's Buildings, EDINBURGH, EH9 3JZ, UK.
>> Room: 6221   Phone: [+44](131) 650 5075   Email: J.A.J.Hall at ed.ac.uk
>> Fax: [+44](131) 650 6553   Web: http://www.maths.ed.ac.uk/
>> people/show/person/47
>>
>>
> --
> ==================================================
> Haroldo Gambini Santos
> D.Sc, Computer Science
> Universidade Federal de Ouro Preto
> http://www.decom.ufop.br/haroldo/
>
>
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