[Dip] Branch-and-Cut-and-Price

Sat Jan 16 10:09:55 EST 2016

Hi Mahdi,

I have the feeling that I got your e-mails out of order, but to answer your
questions, what I wrote was "default options", not "difficult options". The
default options are those that you get if you give no arguments to
configure (hence, the parenthetical comment in my last e-mail). The default
compiler used is clang, so if you aren't giving any arguments to configure,
you should be using clang, not gcc. Thus, installing gcc won't make any
difference (although if you're using a (very) old version of OS X, this
could possibly not be true). It would be most helpful if you could send
more details. Otherwise, I can't really guess what's going on very well.

Cheers,

Ted

On Sat, Jan 16, 2016 at 6:26 AM, m noorizadegan <m.noorizadegan at gmail.com>
wrote:

> Hi Ted,
>
> I installed gcc via homebrew but still the same errors.
> BTW, could you please explain more what you mean by “build with difficult
> options“?
> When I configure, I do not add any arguments as the same as what is
> explained in the dip page.
>
> Any advice?
>
> Best,
> Mahdi
>
> Begin forwarded message:
>
> *From: *Ted Ralphs <ted at lehigh.edu>
> *Subject: **Re: Branch-and-Cut-and-Price*
> *Date: *14 January 2016 at 6:32:54 pm GMT+3:30
> *To: *mahdi noorizadegan <m.noorizadegan at gmail.com>
>
> Hi Mahdi,
>
> That certainly seems to be one of the possible explanations. If you just
> build with default options (no arguments to configure) on a modern version
> of OS x, it should use clang and you should have no problems. If you need
> gcc for some reason, then I would suggest using the version provided by
> homebrew.
>
> Cheers,
>
> Ted
>
> On Thu, Jan 14, 2016 at 7:02 AM, mahdi noorizadegan <
> m.noorizadegan at gmail.com> wrote:
>
>> Hi Ted,
>>
>> Thanks for your comment.
>> I searched on the internet, seems it might be due to incomplete
>> installation of GCC or missing/outdated some libraries  on OS X
>>
>> I try these things and will post it on the mailing list.
>>
>> Thanks again,
>> Cheers,
>> Mahdi
>>
>> On 13 January 2016 at 19:50, Ted Ralphs <ted at lehigh.edu> wrote:
>>
>>> Hi Mahdi,
>>>
>>> Hmm, it's hard to know what's wrong without a bit more information. I
>>> build Dip on OS X on a regular basis and it should work out of the box.
>>> I've seen that error before, but it's pretty generic and can be any number
>>> of things. Would you mind posting some more details to the mailing list?
>>> It's always good to have these things archived in case others have the same
>>> problem. Details would include such things as the exact sequence of command
>>> you executed (what arguments you gave to configure), clang version, OS X
>>> version, etc. Eventually, I may ask you for the config.log file, but let's
>>> get the basics down first.
>>>
>>> Cheers,
>>>
>>> Ted
>>>
>>> On Wed, Jan 13, 2016 at 8:02 AM, m noorizadegan <
>>> m.noorizadegan at gmail.com> wrote:
>>>
>>>> Hi Ted,
>>>>
>>>> Thanks a lot.
>>>> By the description, it seems to work for me.
>>>> I will install DIP and see how it goes although I have encountered some
>>>> errors on my machine (iMac) following the installation guild line.
>>>>  Any suggestion to sort it out would be appreciated!
>>>>  The screenshot is attached.
>>>>
>>>> Cheers,
>>>>
>>>> Mahdi
>>>>
>>>>
>>>> On 12 Jan 2016, at 8:14 am, Ted Ralphs <ted at lehigh.edu> wrote:
>>>>
>>>> Hi Mahdi,
>>>>
>>>> Have you looked at DIP (https://projects.coin-or.org/Dip)? It is much
>>>> easier to work, can be called through a modeling language, and provides
>>>> many of the same capabilities as BCP with a much lower burden on the user.
>>>> Let me know if that looks like it might suffice. I'm happy to provide more
>>>> details and point you towards materials that would help you get started.
>>>>
>>>> Cheers,
>>>>
>>>> Tede
>>>>
>>>> On Sun, Jan 10, 2016 at 8:49 AM, mahdi noorizadegan <
>>>> mahdi.noorizadegan.09 at mail.wbs.ac.uk> wrote:
>>>>
>>>>> Dear Ted,
>>>>>
>>>>> I have been working on branch-and-cut-and-price algorithms for some
>>>>> applications.
>>>>> I have used SCIP so far. But as you may know there are problems in its
>>>>> branch-and-bound tree
>>>>> and also its general performance.
>>>>>
>>>>> As noticed Coin-bcp is not maintained anymore.
>>>>> Implementing an efficient branch-and-bound method that can handle bcp
>>>>> algorithm is
>>>>> not easy too.
>>>>>
>>>>> I was wondering if you have any advice?
>>>>>
>>>>> Looking forward to hearing from you,
>>>>> Best,
>>>>> Mahdi
>>>>>
>>>>> p.s., Following your last response in the bcp mailing list, I am
>>>>> sending this email.
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> Dr. Ted Ralphs
>>>> Professor, Lehigh University
>>>> (610) 628-1280
>>>> ted 'at' lehigh 'dot' edu
>>>> coral.ie.lehigh.edu/~ted
>>>>
>>>>
>>>>
>>>
>>>
>>> --
>>> Dr. Ted Ralphs
>>> Professor, Lehigh University
>>> (610) 628-1280
>>> ted 'at' lehigh 'dot' edu
>>> coral.ie.lehigh.edu/~ted
>>>
>>
>>
>
>
> --
> Dr. Ted Ralphs
> Professor, Lehigh University
> (610) 628-1280
> ted 'at' lehigh 'dot' edu
> coral.ie.lehigh.edu/~ted
>
>
>
> _______________________________________________
> Dip mailing list
> Dip at list.coin-or.org
> http://list.coin-or.org/mailman/listinfo/dip
>

-- 
Dr. Ted Ralphs
Professor, Lehigh University
(610) 628-1280
ted 'at' lehigh 'dot' edu
coral.ie.lehigh.edu/~ted
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