[Scip] Memory Management

[Stefan Heinz]

Hallo Robert,

you could also the debug SCIP library and see if one the thousand asserts 
comes up.

To get this you have to compile SCIP as follows:

make OPT=dbg 

-- Stefan

Am Mittwoch 19 Mai 2010 18:48:22 schrieb Robert Schmidt:
> Hi,
> 
> I am using SCIP to solve a 0-1 Integer Problem within a Java Application.
> I have implemented a shared C library, which provides a method
> solve(double A[], double b[], double z[], double solution[])
> to transfer the values of the mathematical problem and the solution
> vector to the
> shared library.
> The mathematical problem is defined as:
> 
> min z*x
> A*x \geq b
> 
> I am using the jna Interface [1] to call the solve Method of the shared
> lib from Java.
> 
> The problems to solve reach a complexity up to 150.000 decision
> Variables and up to
> 10.000 Constraints. The mathematical complexity is due to the structure
> of the problem usually
> manageable and it is very likely that SCIP finds a solution within 5
> minutes.
> 
> Somehow when I call the solve Method with Problems with more than
> approx. 70.000 decision variables,
> the JVM just terminates with exit value 139. I don't get any further
> information, no crash report, no log entries.
> 
> I have already tried to enlarge the heap size of the jvm to 1024 MB
> without success.
> I believe that this is a memory problem, although I am not sure about that.
> 
> Any Ideas how to solve this problem?
> Is it possible to restrict the memory consumption of SCIP up to an upper
> bound?
> 
> Thanks and Regards,
> Robert
> 
> 
> [1]
> https://jna.dev.java.net/
> _______________________________________________
> Scip mailing list
> Scip at zib.de
> http://listserv.zib.de/mailman/listinfo/scip
>