[Cmpl] Fwd: Error connecting to CPLEX

[Indrajit Sen Gupta]

Hi Mike,

SCIP works out of the box. I am using command line for all purposes. But
here is the funny thing. I exported the problem from CMPL to MPS format and
ran it through SCIP and got a sub optimal solution!!! I am not familiar
with SCIP - just read the mps file and entered optimize. Its actually a
small text book problem and the results shouldn't be different.

Regards,
Indrajit


On Sat, Nov 22, 2014 at 11:12 PM, Mike Steglich <mike.steglich at th-wildau.de>
wrote:

>
>
> Anfang der weitergeleiteten Nachricht:
>
> *Von: *Mike Steglich <mike.steglich at th-wildau.de>
> *Betreff: **Aw: [Cmpl] Error connecting to CPLEX*
> *Datum: *22. November 2014 18:42:16 MEZ
> *An: *Indrajit Sen Gupta <indrajitsg at gmail.com>
>
> Hi Indrajit,
>
> Framework is still in the (temporary) search path if you use Coliop.bat or
> cmplShell.bat. Does scip work out of the box w/o Cmpl?
>
> Cheers,
>
> Mike
>
>
> Am 22.11.2014 um 18:36 schrieb Indrajit Sen Gupta <indrajitsg at gmail.com>:
>
> Still no luck. :( Copied all the dlls and lib files to the Frameworks
> folder. I made sure that Frameworks is in search path. Am giving up for
> tonight.
>
> Regards,
> Indrajit
>
>
> On Sat, Nov 22, 2014 at 10:45 PM, Mike Steglich <
> mike.steglich at th-wildau.de> wrote:
>
>> The entry *ScipFileName =
>> ../Thirdparty/scip/scip-3.1.0.win.x86.msvc.opt.spx.ld.exe* is fine.
>>
>> As mentioned before, please move the required libs
>> (scip-3.1.0.win.x86.msvc.opt.spx.ld.dll and
>> scip-3.1.0.win.x86.msvc.opt.spx.ld.lib)  into Cmpl/Frameworks …
>>
>> Am 22.11.2014 um 18:08 schrieb Indrajit Sen Gupta <indrajitsg at gmail.com>:
>>
>> These are the three files that I have in /Thirdparty/SCIP/
>>
>> scip-3.1.0.win.x86.msvc.opt.spx.ld.dll
>> scip-3.1.0.win.x86.msvc.opt.spx.ld.exe
>> scip-3.1.0.win.x86.msvc.opt.spx.ld.lib
>>
>> And this is the line in /bin/cmpl.opt
>>
>> ScipFileName = ../Thirdparty/SCIP/scip-3.1.0.win.x86.msvc.opt.spx.ld.exe
>>
>> Regards,
>> Indrajit
>>
>>
>>
>> On Sat, Nov 22, 2014 at 10:20 PM, Mike Steglich <
>> mike.steglich at th-wildau.de> wrote:
>>
>>> The following entries are working on my Windows test system:
>>>
>>> CbcPath = ../Thirdparty/CBC/
>>> GlpkPath =  ../Thirdparty/GLPK/
>>> ScipFileName = ../Thirdparty/scip/scip.exe
>>> CplexFileName =
>>>
>>>
>>> It works as expected when I include the CMPL header entry *%arg -solver
>>> scip* in my model.
>>>
>>> Please copy the required DLLs into CMPL/Frameworks or in another folder
>>> that is in the search path.
>>>
>>> This should work similar for Cplex.
>>>
>>> Cheers,
>>>
>>> Mike
>>>
>>>
>>>
>>> Am 22.11.2014 um 16:41 schrieb Indrajit Sen Gupta <indrajitsg at gmail.com
>>> >:
>>>
>>> I tried all of the above and some more - but none worked.
>>>
>>> I tried putting ../../ before the path to filename. So the full path
>>> would look like: ../../AMPL/ampl/cplex.exe
>>>
>>> I even copied cplex.exe and cplex1260.dll into a folder under Thirdparty
>>> and tried running it with filename path as: ../Thirdparty/CPLEX/cplex.exe
>>>
>>> Regards,
>>> Indrajit
>>>
>>>
>>> On Sat, Nov 22, 2014 at 3:02 PM, Mike Steglich <
>>> mike.steglich at th-wildau.de> wrote:
>>>
>>>> Hi Indrajit,
>>>>
>>>> It is unfortunately not possible to use drive letters to specify where
>>>> Cplex is located.  Furthermore please use / instead of \. e.g.
>>>> /DPF/Ampl/ampl/cplex.exe.
>>>>
>>>> Cheers,
>>>>
>>>> Mike
>>>>
>>>>
>>>>
>>>> > Am 22.11.2014 um 09:29 schrieb Kamil Figiela <kfigiela at agh.edu.pl>:
>>>> >
>>>> > Probably it should say:
>>>> >
>>>> > CplexFileName = D:\DPF\AMPL\ampl\cplex.exe
>>>> >
>>>> > Best,
>>>> > Kamil
>>>> >
>>>> >> Wiadomość napisana przez Indrajit Sen Gupta <indrajitsg at gmail.com>
>>>> w dniu 22 lis 2014, o godz. 05:56:
>>>> >>
>>>> >> Hi Mike,
>>>> >>
>>>> >> I have a CPLEX demo version which came with AMPL demo version. I
>>>> tried to use this solver with the option:
>>>> >>
>>>> >> %arg -solver cplex
>>>> >>
>>>> >> and with the following line in cmpl.opt file:
>>>> >>
>>>> >> CplexFileName = D:\DPF\AMPL\ampl\
>>>> >>
>>>> >> This is the path to the folder where cplex.exe is located. When I
>>>> try to execute a model it says
>>>> >>
>>>> >> Error (interfaces): can not connect the solver: Cplex ->
>>>> >>
>>>> >> Any idea why this is happening?
>>>> >>
>>>> >> Regards,
>>>> >> Indrajit
>>>> >>
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>>>> >
>>>> >
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