[Cbc] Two questions on Cbc Solver with AMPL

[Feng Gao]

Dear Mr. Nannicini:

    Sorry to bother you again...

    I am able to compile AMPL ASL library from source code: "amplsolv.lib"
(both 64-bit and 32-bit)

and

    cbc solver from source code: "cbc.exe" (both 64-bit and 32-bit)

     However, it is unsuccessful to "combine" there two images together,
i.e., it is unsuccessful to build a cbc solver "cbc.exe" embedded with
"amplsolv.lib". Do you have any advice? I am using MS Visual Studio 2010
(the compile is cl.exe).

Thank you very much,

Feng

On Tue, Sep 26, 2017 at 12:27 PM, Feng Gao <mangotree.gf at gmail.com> wrote:

> All right, thank you for the advice.
>
> I am able to get the code.
>
> Best,
>
> Feng
>
> On Tue, Sep 26, 2017 at 12:11 PM, Giacomo Nannicini <giacomo.n at gmail.com>
> wrote:
>
>> There should be a get.ASL file, but it might require cygwin on Windows.
>> I don't know how to get ASL automatically on Windows, I guess my best
>> advice is to look at the get.ASL file and repeat the steps on Windows.
>>
>> If you don't know how to do that, then just get the CBC binaries from
>> the AMPL website.
>>
>> On Mon, Sep 25, 2017 at 11:36 PM, Feng Gao <mangotree.gf at gmail.com>
>> wrote:
>> > All right. I have that folder. But there is ONLY configuration files/
>> > Makefiles in that folder? No need source code?
>> >
>> > Feng
>> >
>> > On Tue, Sep 26, 2017 at 11:24 AM, Giacomo Nannicini <
>> giacomo.n at gmail.com>
>> > wrote:
>> >>
>> >> You can get CBC binaries from the webpage you listed.
>> >>
>> >> To compile ASL with CBC, go to the ThirdPary/ASL folder, and get.ASL.
>> >>
>> >> G
>> >>
>> >> On Mon, Sep 25, 2017 at 11:22 PM, Feng Gao <mangotree.gf at gmail.com>
>> wrote:
>> >> > Dear Giacomo:
>> >> >
>> >> >    Thank you! Can you please let me know where to locate ASL code  or
>> >> > binary
>> >> > image? I searched AMPL website---- opensource section, but could not
>> >> > find
>> >> > them...
>> >> >
>> >> > http://ampl.com/products/solvers/open-source/
>> >> >
>> >> > Thanks,
>> >> >
>> >> > Feng
>> >> >
>> >> > On Mon, Sep 25, 2017 at 8:10 PM, Giacomo Nannicini <
>> giacomo.n at gmail.com>
>> >> > wrote:
>> >> >>
>> >> >> Feng,
>> >> >> I believe you need to compile with the ASL solver, otherwise CBC
>> will
>> >> >> not
>> >> >> have an AMPL interface. Look into ThirdParty/ASL.
>> >> >>
>> >> >> You can probably also get binaries directly from the AMPL website,
>> in
>> >> >> the
>> >> >> open-source solver section.
>> >> >>
>> >> >> Giacomo
>> >> >>
>> >> >> On Sep 24, 2017 10:38 PM, "Feng Gao" <mangotree.gf at gmail.com>
>> wrote:
>> >> >>
>> >> >> Dear Cbc Users:
>> >> >>
>> >> >>       I have two questions regarding to Cbc Solver with AMPL. Please
>> >> >> help.
>> >> >>
>> >> >> 1. I use AMPL + Cbc solve to run a case, however, AMPL issued an
>> error
>> >> >> message "Unable to open a file" where a solution is located. I
>> compiled
>> >> >> the
>> >> >> Cbc solver using VS and the solver is working fine in a stand-alone
>> >> >> mode.
>> >> >>
>> >> >>
>> >> >>
>> >> >> ------------------------------------------------------------
>> ------------------------------------------------------------
>> ---------------------------------
>> >> >> ampl: solve
>> >> >> ampl? ;
>> >> >> Welcome to the CBC MILP Solver
>> >> >> Version: 2.9.9
>> >> >> Build Date: Sep 19 2017
>> >> >>
>> >> >> command line -
>> >> >> C:\COIN\Cbc\Cbc\MSVisualStudio\v10\x64-v100-Release\cbc.exe
>> >> >> C:\Users\Feng\AppData\Local\Temp\at2596 -AMPL (default strategy 1)
>> >> >> Unable to open file C:\Users\Feng\AppData\Local\Temp\at2596
>> >> >> No match for AMPL - ? for list of commands
>> >> >> Total time (CPU seconds):       0.00   (Wallclock seconds):
>>  0.00
>> >> >>
>> >> >> Error executing "solve" command:
>> >> >> can't open C:\Users\Feng\AppData\Local\Temp\at2596.sol
>> >> >>
>> >> >>
>> >> >> ------------------------------------------------------------
>> ------------------------------------------------------------
>> ---------------------------------
>> >> >>
>> >> >> 2. How to set a "MIP GAP" termination criteria in Cbc solver command
>> >> >> line.
>> >> >> The manuals only provide a time limit or the maximal number of
>> >> >> iterations
>> >> >> termination criteria though.
>> >> >>
>> >> >> Thank you very much,
>> >> >>
>> >> >> Feng
>> >> >>
>> >> >>
>> >> >> _______________________________________________
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>> >> >> Cbc at list.coin-or.org
>> >> >>
>> >> >>
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>> >> >
>> >
>> >
>>
>
>
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