[Clp] Documentation about how to use CLP through CoinMP

[William H. Patton]

Paul,
The examples show that no one wants to really build the column oriented
sparse matrix structure used by CoinLoadProblem().
Otherwise the scaffolding is nice. Ints and SOS can be turned on and off
after reading the problem or between solves. 
A C user should use the CoinReadFile() to pose the problem via MPS or add
the "LP" type row oriented reader to the case SOLV_FILE_LP: of CoinMP.cpp.
Then the rest of the stuff allows access to the options settings, post solve
solution and sensitivity arrays and progress callbacks.

There are no routines exposed for incrementally perturbing the problem after
a solve and resolving the new problem. I would say it is a base for you to
change to suit your C access needs.  It will certainly work fine for
automating the clp or cbc command line usage of 
  READ model, SET solve options, Solve, Print Solution values and
sensitivities.  In particular it gets the values back to the calling program
as full precision arrays.

William

________________________________________
From: clp-bounces at list.coin-or.org [mailto:clp-bounces at list.coin-or.org] On
Behalf Of J P Fasano
Sent: Friday, May 15, 2009 9:28 PM
To: clp at list.coin-or.org
Subject: Re: [Clp] Documentation about how to use CLP through CoinMP


Paul, 
While this is not documentation, it might help. 
Here is an example of how to use CoinMP: 
https://projects.coin-or.org/CoinMP/browser/trunk/CoinMP/examples/example.c 

Lou, 
>Just to poke for a moment, removing from the 
>public domain all undocumented open-source 
>software would cut the supply by about 50%. 

I suspect it would be more than 50% :-) 

JP