[Coin-lpsolver] CglLandP and CLpSimplex:pivot()

[John J Forrest]

I notice that branches/devel assert is .. <1.0e-6||CoinAbs(solveType_)==2

Changed trunk to that - does it help?

John Forrest


                                                                           
             Menal Guzelsoy                                                
             <mguzelsoy at lehigh                                             
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                                       [Coin-lpsolver] CglLandP and        
                                       CLpSimplex:pivot()                  
             04/24/07 11:08 PM                                             
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           




Hi,

I have been doing some testing with the new CglLandP generator and for
some instances I
am getting the following error:

  ../../../Clp/src/ClpSimplex.cpp:6616: int ClpSimplex::pivot(): Assertion
`fabs(dj_[sequenceIn_])<1.0e-6' failed.
Aborted

It seems that ClpSimplex refuses to pivot on the element chosen by
CglLandP because of different tolerance values used in each project.
On the other hand,
CglLandP fails to detect it due to termination. If needed, I can also
send a simple cutting plane alg. implementation to illustrate the
problem.

Thanks,

Menal.


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