[Scip] Question on using 3.0.0 in windows

[Michael Winkler]

Hi Guillermo,

there are still some problems using methods which are only defines in
OPT mode. This is a windows library problem and will hopefully be fixed
with the next release.

But if you are writing your code in C/C++, you should include the SCIP
header files in your code and compile with the -DNDEBUG flag. Then
methods like SCIPinfinity() should be replace by the preprocessor. (Btw.
DBL_MAX is not a good infinity, SCIPs standard infinity is 1e20)

The second error I do not understand, running an executable leads to not
finding another executable. There I have no clue.

To your third point, can you please check what the retcode is, that
SCIPcreate() is returning, which lead to the execption?

Best, Michael

Am 18.10.2012 15:05, schrieb Guillermo Irisarri:
>
> Hello Michael/Stefan:
>
>  
>
> I wonder whether you had the opportunity to look at my question from a
> previous email:
>
>  
>
> In the meantime, I have a question about the usage if SCIP 3.0.0 in
> Windows (32) systems. I tried the new binary and could not make it
> work. 1) The linker found an unresolved reference for SCIPinfinity. I
> replaced that by DBL_MAX for the time being to get through that part,
> 2.) When running the application Windows complains about not finding
> the "scip-3.0.0.win.x86.vc10.opt.spx.mt.exe", which is strange since
> this is the SCIP interactive application. I put that in the path,
> anyway, 3) The application started and failed with an exception in the
> first call to SCIP_CALL_EXC(SCIPcreate(&scip)).
>
>  
>
> I did not see these problems with the scip-2.1.1 where the only thing
> I needed was the DLL scip-2.1.1.win.x86.vc10.opt.spx.dll (and the
> corresponding library). Is there something else needed besides the
> DLL/Lib?
>
>  
>
>  
>
> I have tried various ways around the issues and have not been able to
> find a solution.
>
>  
>
> First, using SCIPinfinity gives an undefined external. For instance
> with the Queens problem as a test, and from Microsoft VS 10:
>
>  
>
> 1>------ Build started: Project: Queens, Configuration: Debug Win32 ------
>
> 1>Build started 10/18/2012 7:48:48 AM.
>
> 1>InitializeBuildStatus:
>
> 1>  Creating "Debug\Queens.unsuccessfulbuild" because "AlwaysCreate"
> was specified.
>
> 1>ClCompile:
>
> 1>  All outputs are up-to-date.
>
> 1>  Queens.cpp
>
> 1>ManifestResourceCompile:
>
> 1>  All outputs are up-to-date.
>
> 1>Queens.obj : error LNK2001: unresolved external symbol _SCIPinfinity
>
> 1>F:\ Queens\Debug\Queens.exe : fatal error LNK1120: 1 unresolved
> externals
>
> 1>
>
> 1>Build FAILED.
>
> 1>
>
> 1>Time Elapsed 00:00:03.23
>
> ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped
> ==========
>
>  
>
> This can be overcome (temporarily at least) replacing SCIPinfinity
> with DBL_MAX or something like that (just to be able to continue the
> debug). However, after a successful build and when starting the
> execution I get:
>
>  
>
>  
>
>  
>
>  
>
> I have the DLL in place. It is strange that it is asking for the .exe
> which is the SCIP shell.
>
>  
>
> If I put the executable along with the DLL it starts but then fails with:
>
>  
>
>  
>
> When trying to execute: SCIP_CALL_EXC( SCIPcreate(& _scip) );
>
>  
>
> I don't see why the .exe is needed since the DLL should be all that is
> required (same as 2.1.1) I wonder if I am doing something unusual or
> if there are other people with the same issues in Windows systems.
>
>  
>
> If you have a chance, please let me know.
>
>  
>
> Thanks
>
>  
>
> Guillermo
>
>  
>
> -----Original Message-----
> From: Guillermo Irisarri
> Sent: Friday, October 12, 2012 7:20 AM
> To: 'michael.winkler at zib.de'
> Cc: Stefan Heinz; Scip at zib.de
> Subject: RE: [Scip] Quick question on how to get infesibility info
> from presolver or after solve returns infeasible
>
>  
>
> Hello Michael:
>
>  
>
> Thank you very much for your answer. I will try the MinUC suggestion.
>
>  
>
> In the meantime, I have a question about the usage if SCIP 3.0.0 in
> Windows (32) systems. I tried the new binary and could not make it
> work. 1) The linker found an unresolved reference for SCIPinfinity. I
> replaced that by DBL_MAX for the time being to get through that part,
> 2) When running the application Windows complains about not finding
> the "scip-3.0.0.win.x86.vc10.opt.spx.mt.exe", which is strange since
> this is the SCIP interactive application. I put that in the path,
> anyway, 3) The application started and failed with an exception in the
> first call to SCIP_CALL_EXC(SCIPcreate(&scip)).
>
>  
>
> I did not see these problems with the scip-2.1.1 where the only thing
> I needed was the DLL scip-2.1.1.win.x86.vc10.opt.spx.dll (and the
> corresponding library). Is there something else needed besides the
> DLL/Lib?
>
>  
>
> I appreciate it very much if you let me know what may be happening here.
>
>  
>
> Thanks
>
>  
>
> Guillermo
>
>  
>
>  
>
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