[Ipopt] print_frequency_iter and print_frequency_time may be set from opt-file only

[Stefan Vigerske]

Hi,

for a list of options that are available via AMPL directly, see
https://coin-or.github.io/Ipopt/OPTIONS.html#OPTIONS_AMPL

Stefan

On 2/29/20 11:35 PM, Gabriel Hackebeil wrote:
> 
> That is expected behavior for Ipopt. If you want to send options-file-only options to Ipopt you can prefix the option name with OF_ and Pyomo will automatically create this file for you and tell Ipopt to use it.
> 
> Gabe
> 
>> On Feb 29, 2020, at 5:28 PM, Vladimir V. Voloshinov <vladimir.voloshinov at gmail.com> wrote:
>>
>> 
>> We are using Ipopt for a long time, but recently I found that some options may be set from options file only.
>>
>> For example, if I have ipopt.opt file with the line
>> print_frequency_iter 100
>> than the command
>> $ ipopt problem.nl -AMPL "option_file_name=ipopt.opt"
>> works fine.
>>
>> But when I try the command
>> $ ipopt problem.nl -AMPL "print_frequency_iter=100"
>> I get the following error message:
>> Ipopt 3.12.13: Unknown keyword "print_frequency_iter"
>>
>> Currently we have Ipopt 3.12.13 (Linux x86_64), ASL(20180528), gcc 7.4.0.
>>
>> Is it a bug of our compilation or "a feature" of Ipopt release?
>>
>> Sincerely yours,
>> Vladimir Voloshinov.
>> _______________________________________________
>> Ipopt mailing list
>> Ipopt at list.coin-or.org
>> https://list.coin-or.org/mailman/listinfo/ipopt
> 
> 
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