Re: [Help-glpk] implementing constraints in Scala

[name name]

I have this problem

\* Problem: Unknown *\

Minimize
 objective: + x_1 + x_2 + x_3 + x_4 + x_5

Subject To
 constraint1: + 5 x_1 >= 48
 constraint2: + 2 x_2 >= 35
 constraint3: + 2 x_3 >= 24

 constraint4: + 2 x_4 >= 10
 constraint5: + x_5 >= 8

End

After solving I got this

   No.   Row name   St Activity  Lower bound Upper bound Marginal
 
------ ------------ -- --------- ----------- ----------- --------
     1 constraint1  NL        48          48                  0.2
     2 constraint2  NL        35          35                  0.5
     3 constraint3  NL        24          24                  0.5
     4 constraint4  NL        10          10                  0.5
     5 constraint5  NL         8           8                    1


then I pass to dual with

 GLPK.glp_get_row_dual(lp,rowId+1) (which give all 0)


I got error when I try to make bounds with
GLPK.glp_set_col_bnds(lp, colId+1, GLPKConstants.GLP_DB, low, up)

On Fri, Aug 5, 2011 at 7:31 PM, glpk xypron <address@hidden> wrote:

Hello Onor,

please, provide the Java code which produces the error.

Best regards

Xypron

-------- Original-Nachricht --------

> Datum: Wed, 3 Aug 2011 15:09:33 +0200

> Betreff: Re: [Help-glpk] implementing constraints in Scala

> Hello again,
>
> I have  one more question :(
> This time I have a problem with dual
> I get dual (all the lines with GLPK.glp_get_col_dual(lp,colId+1)
> but just after when it's going to put bounds I got an error
>
> A fatal error has been detected by the Java Runtime Environment:
> #
> #  SIGSEGV (0xb) at pc=0x00007f0cca36a1c4, pid=6605, tid=139692915328768
> #
> # JRE version: 6.0_26-b03
> # Java VM: Java HotSpot(TM) 64-Bit Server VM (20.1-b02 mixed mode
> linux-amd64 compressed oops)
> # Problematic frame:
> # C  [libglpk.so.0+0x91c4]  __float128+0x14
>
>
> Whot can I do ?
>
> Thank you again
>
> Onor

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