[Dip] Dip and Dippy‏

[Michael O'Sullivan]

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