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Welcome to the Artelys Knitro forum.
If you have any question about Artelys Knitro, feel free to ask the community.
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GOMEZ CASARES IGNACIO
, …
Ignacio Gómez-Casares
3
Apr 3
mip_terminate option not working
Hi Florian, Understood. Thank you! Best, Ignacio El martes, 2 de abril de 2024 a las 18:59:14 UTC+2,
unread,
mip_terminate option not working
Hi Florian, Understood. Thank you! Best, Ignacio El martes, 2 de abril de 2024 a las 18:59:14 UTC+2,
Apr 3
Lothar Löwer
,
Florian Fontan
5
Feb 16
Knitro does not terminate (infinite calculation)
Again, Thank's for the fast reply. My colleague told me that using ms_maxtime worked so far. But
unread,
Knitro does not terminate (infinite calculation)
Again, Thank's for the fast reply. My colleague told me that using ms_maxtime worked so far. But
Feb 16
as sule
,
Florian Fontan
2
12/13/23
Knitro throwing infeasible or suboptimal solution
Hi, Could it be possible for you to share your model with us so we can investigate on it directly?
unread,
Knitro throwing infeasible or suboptimal solution
Hi, Could it be possible for you to share your model with us so we can investigate on it directly?
12/13/23
Mélodie Angeletti
,
Richard Waltz
2
12/4/23
undefined function knitromatlab_mex for inputs of type function_handle
Dear Mélodie, Can you please tell us what operating system you are using? Also, which version of
unread,
undefined function knitromatlab_mex for inputs of type function_handle
Dear Mélodie, Can you please tell us what operating system you are using? Also, which version of
12/4/23
TD
,
Richard Waltz
4
11/24/23
Nonlinear constraints and squaring
Generally, squaring the constraint so that it has the form: [g(x)]^2 = [a(x)]^2 + [b(x)]^2 <= gub^
unread,
Nonlinear constraints and squaring
Generally, squaring the constraint so that it has the form: [g(x)]^2 = [a(x)]^2 + [b(x)]^2 <= gub^
11/24/23
TD
,
Richard Waltz
2
10/23/23
About bounds
Hi, I would suggest only adding the necessary bounds (LB <= x1 and xn <= UB) and not the
unread,
About bounds
Hi, I would suggest only adding the necessary bounds (LB <= x1 and xn <= UB) and not the
10/23/23
TD
,
Richard Waltz
4
9/22/23
About SQP
Hi, Yes, generally the expense of the underlying QP/subspace minimizations depends on the number of
unread,
About SQP
Hi, Yes, generally the expense of the underlying QP/subspace minimizations depends on the number of
9/22/23
Richard Waltz
8/19/23
Re: [Knitro] Errors when knitroampl use AMPL GNU Scientific Library (GSL)
Hi, I assume this is on the Win64 platform? If so, please make sure the dll you are using is also the
unread,
Re: [Knitro] Errors when knitroampl use AMPL GNU Scientific Library (GSL)
Hi, I assume this is on the Win64 platform? If so, please make sure the dll you are using is also the
8/19/23
TD
,
Richard Waltz
3
7/4/23
Contype in API
Thanks, Richard! On Tuesday, 4 July 2023 at 09:09:05 UTC+2 Richard Waltz wrote: Hi, In the current
unread,
Contype in API
Thanks, Richard! On Tuesday, 4 July 2023 at 09:09:05 UTC+2 Richard Waltz wrote: Hi, In the current
7/4/23
TD
,
Richard Waltz
3
6/29/23
NaN and inf behaviour
Thanks a lot for your quick and clear reply, Richard! Got it. Kind regards TD On Friday, 30 June 2023
unread,
NaN and inf behaviour
Thanks a lot for your quick and clear reply, Richard! Got it. Kind regards TD On Friday, 30 June 2023
6/29/23
Richard Waltz
,
Christian
2
5/19/23
Re: [Knitro] Understanding why hessian sparsity is not used w/o exact hessian
Thanks for the explanation! On Friday, May 19, 2023 at 1:43:31 PM UTC-4 Richard Waltz wrote: Hi, The
unread,
Re: [Knitro] Understanding why hessian sparsity is not used w/o exact hessian
Thanks for the explanation! On Friday, May 19, 2023 at 1:43:31 PM UTC-4 Richard Waltz wrote: Hi, The
5/19/23
Ishanth
,
Richard Waltz
2
10/19/22
Request to extend Knitro Solver trailed version - reg
For the future please send these requests to <info-...@artelys.com>. This group is for
unread,
Request to extend Knitro Solver trailed version - reg
For the future please send these requests to <info-...@artelys.com>. This group is for
10/19/22
Qingyi Chen
,
Richard Waltz
2
9/15/22
constraint evaluation and printing level in Knitro's Python Scipy Interface
Dear Qingyi, Thank you for your message and feedback on the Knitro-Scipy interface. We will
unread,
constraint evaluation and printing level in Knitro's Python Scipy Interface
Dear Qingyi, Thank you for your message and feedback on the Knitro-Scipy interface. We will
9/15/22
S. Swamy
,
Colleen Pirman
2
9/9/22
Extension of One month trail version - Reg
Hi Narayana, Can you provide me with your machine ID? Kind Regards, Colleen Pirman Sales &
unread,
Extension of One month trail version - Reg
Hi Narayana, Can you provide me with your machine ID? Kind Regards, Colleen Pirman Sales &
9/9/22
Hanna Schenk
,
Julien Côté-Massicotte
2
8/11/22
write dynamic model in python (coming from ampl)
Hi Hanna, Here is an example on how it could be written in Python. It is not complete, but that
unread,
write dynamic model in python (coming from ampl)
Hi Hanna, Here is an example on how it could be written in Python. It is not complete, but that
8/11/22
zhenwei lin
,
Richard Waltz
2
7/30/22
linux matlab install problem
Thank you for notifying us. We will fix it soon. Best regards, Richard Waltz From: knitro@
unread,
linux matlab install problem
Thank you for notifying us. We will fix it soon. Best regards, Richard Waltz From: knitro@
7/30/22
Jiarui Liu
,
Richard Waltz
6
1/21/22
Knitro_nlp stops at NaN values
Hi, It may be that your version of Knitro pre-dates the inclusion of that example. Attached is the
unread,
Knitro_nlp stops at NaN values
Hi, It may be that your version of Knitro pre-dates the inclusion of that example. Attached is the
1/21/22
Moe Koubar
1/20/22
Knitro Trial license
Hello, Hope you are doing well. I am trying to install a trial license of Knitro however I didn't
unread,
Knitro Trial license
Hello, Hope you are doing well. I am trying to install a trial license of Knitro however I didn't
1/20/22
Sofia Iarilina
,
Richard Waltz
3
1/17/22
Radius of the trust-region
Thank you! вт, 18 янв. 2022 г. в 02:27, Richard Waltz <richar...@artelys.com>: Yes,
unread,
Radius of the trust-region
Thank you! вт, 18 янв. 2022 г. в 02:27, Richard Waltz <richar...@artelys.com>: Yes,
1/17/22
Mark L. Stone
,
Richard Waltz
3
12/31/21
Specifying custom feasibility tolerance in MATLAB extendedFeatures
Fantastic. Thanks. On Friday, December 31, 2021 at 1:19:16 PM UTC-5 Richard Waltz wrote: Hi, When
unread,
Specifying custom feasibility tolerance in MATLAB extendedFeatures
Fantastic. Thanks. On Friday, December 31, 2021 at 1:19:16 PM UTC-5 Richard Waltz wrote: Hi, When
12/31/21
Lothar Löwer
,
Richard Waltz
2
11/11/21
"Iteration limit reached. Current point is infeasible" - are both messages true?
Dear Lothar, Certainly if the solution satisfies your requirements as being "feasible enough
unread,
"Iteration limit reached. Current point is infeasible" - are both messages true?
Dear Lothar, Certainly if the solution satisfies your requirements as being "feasible enough
11/11/21
Abdelrahman Ayad
, …
richard.waltz
4
9/1/21
Reading NEOS output solution
This is the default initial gap value used to represent infinity. It means that Knitro was unable to
unread,
Reading NEOS output solution
This is the default initial gap value used to represent infinity. It means that Knitro was unable to
9/1/21
asiny...@nes.ru
, …
Jiaxu Li
6
4/9/21
Iteration info is not displaying in Matlab
Thanks a lot. The problem is solved by updating the Matlab version and simplifying the model. ^_^ 在
unread,
Iteration info is not displaying in Matlab
Thanks a lot. The problem is solved by updating the Matlab version and simplifying the model. ^_^ 在
4/9/21
Lisa Neu
,
Richard Waltz
2
12/16/20
Set type of finite differences for variables separately
Hi Lisa, Unfortunately, this functionality is not currently available in Knitro. I agree it could be
unread,
Set type of finite differences for variables separately
Hi Lisa, Unfortunately, this functionality is not currently available in Knitro. I agree it could be
12/16/20
Abdulrahman Aldeek
,
Richard Waltz
2
11/9/20
Extratcing heuristic soultion of MINLP
One question is whether your model is convex or non-convex. If your model is non-convex, then Knitro
unread,
Extratcing heuristic soultion of MINLP
One question is whether your model is convex or non-convex. If your model is non-convex, then Knitro
11/9/20
zhaoyon...@gmail.com
,
m.gabay
2
6/29/20
Buy Knitro
Hello, Please contact our commercial team at info-...@artelys.com Br Le lundi 29 juin 2020 à 09:42
unread,
Buy Knitro
Hello, Please contact our commercial team at info-...@artelys.com Br Le lundi 29 juin 2020 à 09:42
6/29/20
lothar...@googlemail.com
,
Richard Waltz
9
5/29/20
Need some help about error messages.
Hi Lothar, We just released Knitro 12.2 today, which uses an updated version of the AMPL Solver
unread,
Need some help about error messages.
Hi Lothar, We just released Knitro 12.2 today, which uses an updated version of the AMPL Solver
5/29/20
alexey_s...@berkeley.edu
,
Richard Waltz
7
5/15/20
How to interrupt knitro_nlp in Matlab correctly?
Yes, it seems to work. Thanks a lot! Alexey On Fri, May 15, 2020 at 11:09 AM Richard Waltz <
unread,
How to interrupt knitro_nlp in Matlab correctly?
Yes, it seems to work. Thanks a lot! Alexey On Fri, May 15, 2020 at 11:09 AM Richard Waltz <
5/15/20
Philip Womble
, …
m.gabay
9
4/22/20
Slow/no initialization in Knitro 12.0 for moderately sized problem?
Indeed, my mistake. Thank you Philip, we look into it and we'll keep you updated. Le mercredi 22
unread,
Slow/no initialization in Knitro 12.0 for moderately sized problem?
Indeed, my mistake. Thank you Philip, we look into it and we'll keep you updated. Le mercredi 22
4/22/20
allofe...@gmail.com
,
Richard Waltz
4
4/20/20
Duality gap and limit time
Since you mention a .run file, I'm guessing you are using Knitro through AMPL. A user option such
unread,
Duality gap and limit time
Since you mention a .run file, I'm guessing you are using Knitro through AMPL. A user option such
4/20/20