[Coin-discuss] problem with initialsolve

[John J Forrest]

Anureet,

Cplex seems to accept a non standard MPS format bound.  There are LI bounds
which I have never heard of (they obviously allow a lower bound of minus
infinity).  The Mps standard is MI and when I changed them to that then the
problem was feasible.

CoinMpsIo should have given error messages on unrecognized bound types - I
think I have corrected that.

John Forrest


                                                                           
             Anureet Saxena                                                
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                                       [Coin-discuss] problem with         
             04/11/06 12:50 PM         initialsolve                        
                                                                           
                                                                           
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hi,

I am trying to solve a linear program by
OsiClpSolverInterface::initialSolve() which is known to be feasible and
bounded (cplex solves it to optimality). However, OsiClp reports the linear
program to be primal infeasible. The .mps file for the linear program and a
short code for verification can be found at,

http://www.andrew.cmu.edu/user/anureets/COIN_tmp/workspace_my.tgz .

It would be very helpful if someone could suggest what is going wrong and a
possible way to fix it.

regards,
Anureet Saxena







Anureet Saxena
anureet at cmu.edu
anureet at yahoo.com

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