[Coin-discuss] OsiXprSolverInterface stdout control

[Luiz Carlos da Costa Junior]

Hi Stefan,

Thanks a lot for your answer.

Regards,
Luiz

On 16 April 2012 12:54, Stefan Vigerske <stefan at math.hu-berlin.de> wrote:

> Hi,
>
> the output of Xpress is redirected by OsiXpr through the registered
> CoinMessageHandler. The default handler just writes to stdout.
> You can register your own message handler via OsiXprSolverInterface::**
> passInMessageHandler().
> If you just want to disable output, then osixpr->messageHandler()->**setLogLevel(0)
> should do it.
> I think there is no finegrained control of verbosity levels implemented in
> the OsiXpr interface so far.
>
> Stefan
>
>  Hi all,
>>
>> I'am using OsiXprSolverInterface and, at the "loadProblem" and
>> "initialSolve" methods, Xpress prints the problem statistics and solution
>> summary at the stdout, as follows:
>>
>>  XPRS0000
>>> XPRS0000  Reading Problem Prob1
>>> XPRS0000  Problem Statistics
>>> XPRS0000             2 (     50 spare) rows
>>> XPRS0000             7 (      0 spare) structural columns
>>> XPRS0000             8 (    100 spare) non-zero elements
>>> XPRS0000  Global Statistics
>>> XPRS0000             0 entities        0 sets        0 set members
>>> XPRS0000  Minimizing LP Prob1
>>> XPRS0000  Original problem has:
>>> XPRS0000           2 rows            7 cols            8 elements
>>> XPRS0000  Presolved problem has:
>>> XPRS0000           1 rows            3 cols            3 elements
>>> XPRS0000
>>> XPRS0000     Its         Obj Value      S   Ninf  Nneg        Sum Inf
>>>  Time
>>> XPRS0000       0           .000000      D      1     0    2976.000000
>>>   0
>>> XPRS0000       1       23808.00000      D      0     0        .000000
>>>   0
>>> XPRS0000  Uncrunching matrix
>>> XPRS0000       1       23808.00000      D      0     0        .000000
>>>   0
>>> XPRS0000  Optimal solution found
>>>
>>
>>
>> Is there any way to change the verbose level or redirect the Xpress output
>> to somewhere else? I tried to use setLogFile, but it didn't work.
>>
>> Thanks in advance,
>> Luiz
>>
>>
>>
>>
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>
>
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