[Dip] Dip Digest, Vol 14, Issue 3

Tue Sep 6 08:44:02 EDT 2011

Hi,
I don't know if I cannot find an example of relax-and-cut in Dip or it does
not exist?
Any comment is appreciated.

regards,

On Wed, Aug 24, 2011 at 6:00 PM, <dip-request at list.coin-or.org> wrote:

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> Today's Topics:
>
>   1. Re: Dip and Dippy? (Michael O'Sullivan)
>   2. Re: Dip and Dippy? (Ted Ralphs)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 24 Aug 2011 09:29:22 +0000
> From: "Michael O'Sullivan" <michael.osullivan at auckland.ac.nz>
> Subject: Re: [Dip] Dip and Dippy?
> To: Ted Ralphs <ted at Lehigh.EDU>, piet hoogeveen
>        <piet.hoogeveen at hotmail.com>
> Cc: Stuart Mitchell <stu at stuartmitchell.com>,   "dip at list.coin-or.org"
>        <dip at list.coin-or.org>, "Iain Dunning \(iaindunning at gmail.com\)"
>        <iaindunning at gmail.com>
> Message-ID:
>        <
> 90BC6B5184095141AF17DAAF464E2A6F077B906B at uxcn10-1.UoA.auckland.ac.nz>
> Content-Type: text/plain; charset="windows-1255"
>
> Hi Ted,
>
> TortoiseSVN tells me I am using the HEAD revision of Dip, so I think we are
> using the latest and greatest when compiling. At least the Windows versions
> I am putting into PyPI should be. Stu, Iain, any comment on the Linux
> version? Hopefully it is just our installation docs that need updating?
>
> By the way we used DIP "out of the box" on a set partitioning problem of
> reasonable (not huge) size and beat Gurobi and Cbc pants down. We do even
> better when using a customised subproblem solver. I am in the process of
> submitting both PuLP and Dippy papers to Computers and OR.
>
> Kind regards, Mike
>
> -----Original Message-----
> From: Ted Ralphs [mailto:ted at Lehigh.EDU]
> Sent: Wednesday, 24 August 2011 4:16 p.m.
> To: piet hoogeveen
> Cc: dip at list.coin-or.org; Michael O'Sullivan
> Subject: Re: [Dip] Dip and Dippy?
>
> 2011/8/20 piet hoogeveen <piet.hoogeveen at hotmail.com>:
> > Hi all,
> >
> > I have a question about Dip and Dippy.
> >
> > $ sudo easy_install? -U coinor.dippy
> > I get the following:
> > user at ubuntu:~$ sudo easy_install? -U coinor.dippy [sudo] password for
> > user:
> > Searching for coinor.dippy
> > Reading http://pypi.python.org/simple/coinor.dippy/
> > Reading https://projects.coin-or.org/CoinBazaar/wiki/Projects/Dippy
> > No local packages or download links found for coinor.dippy
> > error: Could not find suitable distribution for
> > Requirement.parse('coinor.dippy')
> > user at ubuntu:~$
>
> Looks to me like there are only packages there for Windows from the file
> names, so I guess that is the issue. However, there are instructions for
> building Dippy and those seem to be easy and work fine. When you install
> Dippy, DIP gets downloaded and installed automatically, so you don't even
> need to do that step yourself.
>
> The only issue is that Dippy currently works with Dip-0.8.7, not with most
> current release. I've cc'd the project manager on this e-mail.
> Mike, any chance of getting Dippy updated to the latest release on COIN? I
> think you are already working with DIP's trunk, right? I'm going to start
> using Dippy for some course projects soon and would like to have it working
> with the latest and greatest.
>
> Cheers,
>
> Ted
> --
> Dr. Ted Ralphs
> Associate Professor, Lehigh University
> (610) 628-1280
> ted 'at' lehigh 'dot' edu
> coral.ie.lehigh.edu/~ted
>
>
>
>
> ------------------------------
>
> Message: 2
> Date: Wed, 24 Aug 2011 10:39:54 -0400
> From: Ted Ralphs <ted at lehigh.edu>
> Subject: Re: [Dip] Dip and Dippy?
> To: "Michael O'Sullivan" <michael.osullivan at auckland.ac.nz>
> Cc: Stuart Mitchell <stu at stuartmitchell.com>,   "dip at list.coin-or.org"
>        <dip at list.coin-or.org>, "Iain Dunning \(iaindunning at gmail.com\)"
>        <iaindunning at gmail.com>
> Message-ID:
>        <CA+GYycusz94SR=4qhzWrbGNi_JNdUsNMmHqLyDyOyOhNyEkuJw at mail.gmail.com
> >
> Content-Type: text/plain; charset=UTF-8
>
> I'm a bit confused. I just did a an update in SVN to the latest trunk
> version of Dippy (which seems to be the only one) and the Makefile
> here:
>
>
> https://projects.coin-or.org/CoinBazaar/browser/projects/Dippy/trunk/Makefile
>
> has the line
>
> DIPVER := 0.8.7
>
> If I follow the instructions and do "make develop', that is the
> version it checks out and builds. I tried changing "0.8.7" to
> "0.82.0", which is the latest release of DIP and the build breaks
> because some of the patches don't get applied properly (there may be
> other things that would break, too).
>
> As for installing from PyPi, when I try the instructions for that, I get
>
> ted at nemo:~/COIN/Dippy$ bin/easy_install -U coinor.dippy
> Searching for coinor.dippy
> Reading http://pypi.python.org/simple/coinor.dippy/
> Reading https://projects.coin-or.org/CoinBazaar/wiki/Projects/Dippy
> No local packages or download links found for coinor.dippy
> error: Could not find suitable distribution for
> Requirement.parse('coinor.dippy')
>
> If you go to http://pypi.python.org/simple/coinor.dippy/, there are
> clearly only Windows version listed there. What Linux versions are you
> referring to?
>
> Cheers,
>
> Ted
>
> 2011/8/24 Michael O'Sullivan <michael.osullivan at auckland.ac.nz>:
> > Hi Ted,
> >
> > TortoiseSVN tells me I am using the HEAD revision of Dip, so I think we
> are using the latest and greatest when compiling. At least the Windows
> versions I am putting into PyPI should be. Stu, Iain, any comment on the
> Linux version? Hopefully it is just our installation docs that need
> updating?
> >
> > By the way we used DIP "out of the box" on a set partitioning problem of
> reasonable (not huge) size and beat Gurobi and Cbc pants down. We do even
> better when using a customised subproblem solver. I am in the process of
> submitting both PuLP and Dippy papers to Computers and OR.
> >
> > Kind regards, Mike
> >
> > -----Original Message-----
> > From: Ted Ralphs [mailto:ted at Lehigh.EDU]
> > Sent: Wednesday, 24 August 2011 4:16 p.m.
> > To: piet hoogeveen
> > Cc: dip at list.coin-or.org; Michael O'Sullivan
> > Subject: Re: [Dip] Dip and Dippy?
> >
> > 2011/8/20 piet hoogeveen <piet.hoogeveen at hotmail.com>:
> >> Hi all,
> >>
> >> I have a question about Dip and Dippy.
> >>
> >> $ sudo easy_install? -U coinor.dippy
> >> I get the following:
> >> user at ubuntu:~$ sudo easy_install? -U coinor.dippy [sudo] password for
> >> user:
> >> Searching for coinor.dippy
> >> Reading http://pypi.python.org/simple/coinor.dippy/
> >> Reading https://projects.coin-or.org/CoinBazaar/wiki/Projects/Dippy
> >> No local packages or download links found for coinor.dippy
> >> error: Could not find suitable distribution for
> >> Requirement.parse('coinor.dippy')
> >> user at ubuntu:~$
> >
> > Looks to me like there are only packages there for Windows from the file
> names, so I guess that is the issue. However, there are instructions for
> building Dippy and those seem to be easy and work fine. When you install
> Dippy, DIP gets downloaded and installed automatically, so you don't even
> need to do that step yourself.
> >
> > The only issue is that Dippy currently works with Dip-0.8.7, not with
> most current release. I've cc'd the project manager on this e-mail.
> > Mike, any chance of getting Dippy updated to the latest release on COIN?
> I think you are already working with DIP's trunk, right? I'm going to start
> using Dippy for some course projects soon and would like to have it working
> with the latest and greatest.
> >
> > Cheers,
> >
> > Ted
> > --
> > Dr. Ted Ralphs
> > Associate Professor, Lehigh University
> > (610) 628-1280
> > ted 'at' lehigh 'dot' edu
> > coral.ie.lehigh.edu/~ted
> >
>
>
>
> --
> Dr. Ted Ralphs
> Associate Professor, Lehigh University
> (610) 628-1280
> ted 'at' lehigh 'dot' edu
> coral.ie.lehigh.edu/~ted
>
>
>
>
> ------------------------------
>
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> End of Dip Digest, Vol 14, Issue 3
> **********************************
>
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