[Coin-discuss] Segfault when using CbcModel

[John J Forrest]

Kim,

Unlikely to make much difference to speed.  The default for stand-alone 
version was changed to that (0) as it did not seem to help on average.

Will see if I can find time to try again.

John Forrest





Re: [Coin-discuss] Segfault when using CbcModel

Kim Hansen 
to:
John J Forrest
02/07/2008 11:17 AM


Cc:
"COIN discussion (and bugs)"







On Feb 7, 2008 4:20 PM, John J Forrest <jjforre at us.ibm.com> wrote:
>
> Kim,
>
> Unable to build from file.  configure wants main.cc

Ups, don't know why that was missing, I have uploaded a new archive
with main.cc at:
  http://ange.dk/~kim/segfault-11990.tar.gz

> However you should be able to get rid of error by changing preprocess
> option.  slacks are being replaced by integer variables and in this case
> preprocessing is doing very little so you end up with one more variable
> after preprocessing than before.  This is probably what is causing 
problem.
> I may try and look at it.
>
> So change your preprocessing default/option so translate[preProcess] in
> CoinSolveCbc5.cc is 0 e.g. preProcess=1 - that should fix problem.

But this is general code that is used for solving a lot of different
MIP problems, would that have the possibility of making some other
problems a lot slower ?

Thanks,
-- 
Kim Hansen
Vadgårdsvej 3, 2.tv
2860 Søborg
Fastnet: 3956 2437  --  Mobil: 3091 2437

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