[Cbc] Two questions on Cbc Solver with AMPL

[Giacomo Nannicini]

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
>> >>
>> >>
>> >> _______________________________________________
>> >> Cbc mailing list
>> >> Cbc at list.coin-or.org
>> >>
>> >>
>> >> https://urldefense.proofpoint.com/v2/url?u=https-3A__list.coin-2Dor.org_mailman_listinfo_cbc&d=DwICAg&c=Ngd-ta5yRYsqeUsEDgxhcqsYYY1Xs5ogLxWPA_2Wlc4&r=8FaVxIx99H879Ebkij38NpcRZoYLK-7QMl1LqyvBccA&m=8SxEtjHupj81oGZfkVBTmkXuT1qwISmP_eNU8T5zAmQ&s=5qs5HpSbbII0q41Boy-R7lKX6Ba0SWcp3LNU6kqLgDg&e=
>> >>
>> >>
>> >
>
>