[Scip] SCIP version 0.82 released

Tobias Achterberg achterberg at zib.de
Mon May 15 23:03:33 MEST 2006


Dear colleagues,

the new version 0.82 of SCIP was released today. You can download it
as usual from http://scip.zib.de.

We also added the possibility to download precompiled binaries for
those who are only interested in the standalone MIP solver. Currently,
versions for Linux/PC and Windows/PC linked to Soplex 1.3.0 and ZIMPL
2.04 are available.
*Note*: There seems to be a strange bug in our zlib implementation
used under VMWare/Windows. Sometimes, this results in read errors
while reading gz-compressed data.

I would be glad if anyone can contribute additional binaries, e.g.,
Mac, Sun, or Alpha binaries. But please turn off the readline library
in compilation (make READLINE=false), because this would introduce
licensing issues. Enabling ZIMPL (make ZIMPL=true) is preferred.


Major changes in this version are:
- possibility to apply pricing during probing to support
branch-and-generate type heuristics
- loading of primal solutions prior or during the solving
- fixed support for branching on hyperplanes
- new primal heuristic "shifting"
- root node reduced cost fixing is applied again whenever a new primal
bound is found
- conflict analysis now can also produce conflict constraints
including non-binary variables
- lazy constraints and user cuts support in MPS and LP files
- changed command line syntax to better support batch mode
- as always, fixed quite a few bugs



Best regards,  Tobias


-- 
Tobias Achterberg          Konrad-Zuse-Zentrum fuer
                           Informationstechnik Berlin
Tel: +49 (0)30 84185-301   Takustr. 7
Email: achterberg at zib.de   D-14195 Berlin, Germany


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