Forwarded Message
Date: Wed, 7 Feb 2024 16:17:04 -0300
Subject: GLPK doubt
To: help-glpk@gnu.org
From: Nicolas Herculano Pires
> Dear esteemed GNU colleague,
>
> I hope this message finds you well. I am writing to address an issue I
> have encountered with GLPK, albeit it may
On Mon, 2024-01-29 at 12:25 -0500, Derek Huang wrote:
> Hi,
>
> Quick update on this—I tried rebuilding clean again using the
> CMakeLists.txt and realized there is an issue with the glpk_5_0.def
> files in ./w32 and ./w64 since they list glp_netgen_prob as an export,
> but it has no definition
Forwarded Message
Date: Sat, 27 Jan 2024 00:30:37 -0500
Subject: GLPK CMake build configuration (Windows)
To: help-glpk@gnu.org
From: Derek Huang
> Hi,
> My name is Derek Huang; I am currently a quant [developer] at TD
> Securities. I needed to use GLPK at work on Windows but
Forwarded Message
From: Mario Linsenmeyer
To: help-glpk@gnu.org
Subject: Question to GLPK installation
Date: Wed, 13 Dec 2023 19:54:08 +0100
Hello all,
I don't know whether you are still answering at this email address but I
try it.
I have used GLPK during my study time and
Forwarded Message
Date: Mon, 24 Jul 2023 11:55:59 -0300
Subject:
To: help-glpk@gnu.org
From: ANTONIO Carlos Moretti
> Hello,I want to set the parameter presolve in the glp_intopt.
> I have no idea in how to do that.
> Can you,please, help me.
> Thanks in advance
> Antonio
>
Forwarded Message
From: Adolfo Roquero
To: m...@gnu.org
Subject: GLPK
Date: Wed, 5 Jul 2023 12:44:48 +0200
> Dear Mao,
> My name is Adolfo and I have been struggling for the past 2 weeks to
> install the GLPK solver to be used with cvxpy in a docker container. I
> have spent an
Forwarded Message
Date: Sun, 28 May 2023 14:08:46 -0300
Subject: Re: [Fwd: Re: [Fwd: MathProg set vs param]]
Cc: help-glpk@gnu.org, Andrew Makhorin
To: Jeff Kantor
From: Code Raguet
>
> > The ’set’ and ‘param’ statements need to be considered from
> >
Forwarded Message
From: Code Raguet
To: help-glpk@gnu.org
Subject: MathProg set vs param
Date: Sat, 27 May 2023 19:51:01 -0300
> Hi, there!
> I'm new to MathProg (and LP) but I have several years as a software
> developer.
> I would like to understand the semantic differences
On Wed, 2023-03-15 at 13:02 +, Ma, Lingjie wrote:
> Hi, Mr. Mao,
>
> I have some quantile regression type portfolio optimization programs
> which needs to call glpk package in R.
>
> My question is how to call glpk with R?
please see https://en.wikibooks.org/wiki/GLPK/R
>
> Thanks,
>
Forwarded Message
Date: Tue, 17 Jan 2023 20:33:01 -0800
Subject: Integer solutions
To: 'Help-glpk@gnu.org'
From: neillcl...@gmail.com
> Hi,
> If I call glp_simplex without specifying that any variables be
> integers and then call glp_intop it looks like it at least makes the
>
Forwarded Message
Date: Mon, 31 Oct 2022 20:46:36 +Subject: Using the summation
operator with GLPK.To: help-glpk@gnu.org From:
philliprusso So from reading the documentation I
guess that GLPK can read a file in and that there are a number of
formats to be using. So I would
On Thu, 2022-10-27 at 06:02 +, ajit.a.mu...@shell.com wrote:
> Hi,
>
> I am using glpk for an optimisation problem.
> I was wondering if the tool that I have developed needs to
> commercialized, can I use the glpk for the commercial purpose.
Please see
The following article by Katta Murty, "A Problem in Enumerating Extreme
Points, and an efficient Algorithm.", sheds some light on the issue; see
http://www-personal.umich.edu/~murty/segments.pdf
On Sat, 2022-10-15 at 23:24 -0400, Hector Arciniegas wrote:
> Greetings, I don't understand why negative dual values appear in an
> optimal simplex table. Thanks.
Because your constraints are double-bounded, in which case dual values
(= lagrangian multipliers) can have any sign.
>
>
> MODELO
Forwarded Message
From: Prabhu Manyem
To: fuk...@math.ethz.ch, Andrew Makhorin , avis@cs.mcgill.c
a
Subject: Linear Program Optimal Extreme Points
Date: Thu, 6 Oct 2022 10:04:22 +1030
Dear Andrew, Komei, David,
I am a retired Maths professor in Adelaide, Australia.
About
Forwarded Message
Date: Sun, 2 Oct 2022 19:14:51 + (UTC)
Subject: Inquiry about using GNU MathProg
Cc: basma Mamdouh
To: help-glpk@gnu.org
From: basma mohamed
Dear GLPK developers and helpers,
After greeting,
I recently started to use lp_solve for optimizing the
Forwarded Message
Date: Fri, 12 Aug 2022 11:18:40 +0800
Subject: For help
To: help-glpk@gnu.org
From: travelor <1085886...@qq.com>
> Hello, I'm having some trouble, could you tell me some parameter
> for GLPK to optimizing many Linear problem?
> I understarded many usage, such
Forwarded Message
From: Pedro Magalhães
To: help-glpk@gnu.org
Subject: MIP solution/optimisation process information
Date: Thu, 14 Jul 2022 10:32:31 +0200
> Hello,
>
> I've recently realised that GLPK/GLPSOL only writes a limited amount
> of
> information to solution files,
Hi Prabhu,
Thank you for your interest in glpk and the link to your article.
I think you may be interested in challenge MIS problems, some of which
were used on testing glpk; see https://oeis.org/A265032/a265032.html .
Best regards,
Andrew Makhorin
On Tue, 2022-07-05 at 10:38 +0930, Prabhu
uild the library in glpk-5.0/setup.job (it
is a plain text file).
Best regards,
Andrew Makhorin
>
> Another way to solve the problem wuld be to make a "header only
> library", by putting all the code in a ".h" file. This is what the
> designers of the
not maintained anymore for
a long time.
Try to look at https://en.wikibooks.org/wiki/GLPK/Python ; this may
help.
Best regards,
Andrew Makhorin
>
> From: Alireza Asadi
> Sent: Thursday, June 30, 2022 7:52 PM
> To: Andrew Makhorin
> Cc: help-glpk@gnu.org
> Subject: Re:
Forwarded Message
From: Christian Prins
To: m...@gnu.org
Subject: GLPK library for Dev-C++
Date: Thu, 30 Jun 2022 11:54:03 +0200
> Dear Andrei,
>
> I am a professor of operations research and industrial engineering at
> the University of Technology of Troyes, France.
>
> I
On Thu, 2022-06-30 at 12:14 +, Alireza Asadi wrote:
> Hi all,
>
> Any idea how to solve this problem? I googled a lot but no luck ☹
Please provide more detailed information. Thanks.
>
>
> Kind regards,
>
> Alireza Asadi
>
>
Forwarded Message
From: Prabhu Manyem
To: Andrew Makhorin , Neill Clift
Subject: GLPK Linear Programming solver
Date: Tue, 28 Jun 2022 14:39:01 +0930
> Hello,
>
> About the GLPK Linear Programming solver 5.0, running Linear
> Programming models:
>
> For so
to the corresponding
routines (see glpk/src/npp/*.c).
Best regards,
Andrew Makhorin
>
> Dr Prabhu Manyem,
> Retired Professor of Applied Mathematics,
> Adelaide Australia
>
Forwarded Message
Date: Fri, 3 Jun 2022 16:46:42 -0500
Subject: GUSEK exercise review support request
To: m...@gnu.org
From: Román Leonardo Rodriguez Florián
> Kind regards Andrew,
>
> I hope you are very well, I would like to ask for your support, if you
> can help me by
atters is that
the solution found is optimal.
>
> Best regards
>
> Harald
>
> Am 29.05.2022 um 18:36 schrieb Andrew Makhorin:
> > Hi Harald,
> >
> >
> > On Sun, 2022-05-29 at 08:39 +0200, Harald Mumm wrote:
> > > Hallo Andrew,
> > >
&g
Forwarded Message
From: Andrew Makhorin
To: Harald Mumm
Subject: Re: GLPK Dualprices
Date: Sun, 29 May 2022 19:36:20 +0300
> Hi Harald,
>
>
> On Sun, 2022-05-29 at 08:39 +0200, Harald Mumm wrote:
> > Hallo Andrew,
> >
> > is it possible, that G
Forwarded Message
From: Harald Mumm
To: m...@gnu.org
Subject: GLPK Dualprices
Date: Sun, 29 May 2022 08:39:28 +0200
> Hallo Andrew,
>
> is it possible, that GLPK sometimes calculates wrong dual prices?
>
> I send you an example in the attachment, where CPLEX calculates
>
>
>
> On 3/5/22 13:11, Andrew Makhorin wrote:
> > On Tue, 2022-05-03 at 06:38 +, Georgios Avgerinopoulos wrote:
> > > Hey Community!
> > >
> > > Just ran into the following problem
> > >
> > >
> > >
> >
On Tue, 2022-05-03 at 06:38 +, Georgios Avgerinopoulos wrote:
> Hey Community!
>
> Just ran into the following problem
>
>
>
> glp_alloc: no memory available
> Error detected in file ..\src\env\alloc.c at line 91
>
> We've got plenty of memory (both RAM and hard drive).
>
> Any
Forwarded Message
Date: Tue, 19 Apr 2022 10:00:54 +0800Subject: Discussion on GLPKTo: help
-glpk@gnu.orgFrom: jimingyue <20s103...@stu.hit.edu.cn>Dear developer,
Hope you are well!
Recently, I use GLPK to solve a LP problem in my graduation project. My
coefficient matrix is very
Forwarded Message
From: Will Tipton
To: help-glpk@gnu.org
Cc: John Rice
Subject: identifying infeasible problem without using the LP presolver
Date: Mon, 21 Mar 2022 11:15:44 -0400
> Hi help-glpk,
>
> We're using GLPK's simplex algorithm to solve some medium-sized lp
>
Forwarded Message
From: Davor Ocelic
To: m...@gnu.org
Subject: gmpl question
Date: Fri, 17 Dec 2021 10:07:38 +0100
Heya,
I would appreciate minimal help with gmpl if you could:
In the glpk example `assign.mod`, the constraint is that
an agent can have only one task assigned:
On Mon, 2021-11-01 at 11:47 +, Sierra Ansuas, Juan Pablo wrote:
> Hello,
>
> I am trying to write a MPS file and then load it but I appear to be
> doing something wrong.
>
> 1. glp_write_mps(prob, GLP_MPS_FILE,NULL, “file.mps”);
> 2. glp_read_mps(prob, GLP_MPS_FILE, NULL,
Forwarded Message
Date: Sun, 10 Oct 2021 13:58:47 +0200
Subject: Re: Simplifications de glpsol
To: help-glpk@gnu.org
From: guy chevalier
> I translate my precedent email in English :Good morning,
>
> I have a constraint x+y+z<=2 in glpsol model and I would like to know
> if
Forwarded Message
Date: Mon, 27 Sep 2021 19:33:19 -0300
Subject: Guidance for import data in gusek from excel table
To: help-glpk@gnu.org
From: Sagarkumar Patel
> Hello Team,
> I wrote down a program for my final year project. The program works
> perfectly but I want to make
Forwarded Message
Date: Wed, 22 Sep 2021 18:16:56 +
Subject: Presolve
To: help-glpk@gnu.org
From: Javad Ahmadi
>
>
>
>
>
>
>
>
> Does GLPK provide access or output the pre-solve model?
> If so please advise.
>
> Regards, J. Ahmadi
>
>
>
>
>
>
>
> Nothing
Forwarded Message
Date: Thu, 9 Sep 2021 15:49:30 +
Subject: Feeding an initial feasible solution to GLPK for MILP in CVXPy
To: help-glpk@gnu.org
From: "Vasebi, Saeed [JJCUS]"
>
>
>
>
>
>
>
>
> Hi all,
>
> I have a MILP problem in GLPK, using CVXPy library. GLPK
Forwarded Message
Date: Thu, 15 Jul 2021 13:27:24 +0200
Subject: help for gusek
To: help-glpk@gnu.org
From: Adrien T
> Hello,
>
> I would like to use the Gusek solver to optimize a problem but in
> order to avoid a too long calculation I would like to be able to stop
> the
Forwarded Message
From: yege...@sina.com
Reply-to: yege...@sina.com
To: mao
Subject: help for glpk
Date: Sun, 27 Jun 2021 11:57:36 +0800
> Hi Andrew，
> How are you? Sorry for bother you. I have some questions about
> glpk,I will be very appreciated if I can get some help
Forwarded Message
Date: Tue, 22 Jun 2021 09:25:01 +0200
Subject: Constraint not respected
To: help-glpk@gnu.org
From: Gioia Lorusso
> Hi GLPK team,I am using GLPK and I am struggling in understanding why
> an upper bound constraint is not respected.
> I have submitted a
Forwarded Message
From: Dario Strbenac
To: help-glpk@gnu.org
Subject: Include Examples in Documentation Showing Usage
Date: Wed, 9 Jun 2021 07:00:09 +
Good day,
The README and INSTALL files contain only details to compile the
software. Could there be a vignette provided
On Sat, 2021-06-05 at 12:16 +0200, Tadeus Prastowo wrote:
> Hello,
>
> After downloading GLPK 5.0 tarball, I see some PDF notes written in
> Russian in the directory ./glpk-5.0/doc/notes.
>
> By any chance, are the English translations of the PDF notes available
> somewhere?
AFAIK google has
On Thu, 2021-03-04 at 17:47 +0100, Heinrich Schuchardt wrote:
> On 3/4/21 4:44 PM, Antti Lehtila wrote:
> > Hi,
> >
> > I think it works fully as documented, and so *per design*. Singleton
> > rows are treated as column bounds by the preprocessor. See
> > documentation
> > for
On Tue, 2021-01-26 at 16:36 +0100, Alexandre Garreau wrote:
> Le mardi 26 janvier 2021, 16:12:24 CET Domingo Alvarez Duarte a écrit
> :
> > Where is GLPK 6.0 available ?
> >
> > It's the first time I hear of it, and it's not available at
> > https://ftp.gnu.org/gnu/glpk/ .
>
> Mine is below 5.0
On Tue, 2021-01-26 at 16:12 +0100, Domingo Alvarez Duarte wrote:
> Where is GLPK 6.0 available ?
Sorry, I meant 5.0 :)
>
> It's the first time I hear of it, and it's not available at
> https://ftp.gnu.org/gnu/glpk/ .
>
> On 26/1/21 15:57, Andrew Makhorin wrote:
> >
iquer[o] >= 1;
>
> solve;
>
> #display duree, planches, profit;
> printf "Il faut fabriquer :\n";
> printf{i in objets} "%f objet(s) %d\n", aFabriquer[i], i;
> printf "Il faut fabriquer :%f\n", result;
>
> data;
>
> param N := 5;
Forwarded Message
From: Alexandre Garreau
To: help-glpk@gnu.org
Subject: What is this format?
Date: Tue, 26 Jan 2021 11:46:03 +0100
Hello,
In my university, they use cplex for teaching linear programming, and
I’d
like not to install anything proprietary on my computer, but I
Forwarded Message
From: Mahmut Yavuzer
To: help-glpk@gnu.org
Subject: GLPK usage for Eclipse C++ project
Date: Wed, 6 Jan 2021 14:31:28 +
Hi,
I have downloaded glpk-4.65 unpacked to the directory C:\progs\glpk-
4.65.
I have added environment variable
Forwarded Message
Date: Mon, 4 Jan 2021 23:23:17 +
Subject: Question for infeasible LP problem
To: help-glpk@gnu.org
From: "Du, Jeanette"
>
>
>
>
>
>
>
>
> Hello,
>
> I am relatively new to GLPK LP solver. Is there a way to find out the
> constraint(s) that cause
.html
This bug is not fixed yet, because both ssx_chuzc and ssx_chuzr will be
replaced by new versions.
>
> This one
> https://github.com/mingodad/GLPK/commit/c7abf466f0e31b3eeb1cf1bfd2b7c0
> dc8e05edad
> apparently I've got a the mailing list link wrongly.
>
> Cheers !
>
orts fixed by the changes above? Thank you.
Andrew Makhorin
On Wed, 2020-12-02 at 11:27 -0300, Germán Ferrari wrote:
> Hi.
>
> I couldn't find the MathProg grammar in EBNF
You can find all the grammar productions actually used by parsing
routines in comments to these routines;
see glpk/src/mpl/mpl1.c and mpl2.c.
For example:
On Tue, 2020-11-24 at 18:59 +, Manuel Castro wrote:
> Hi there,
>
> I am wondering how I can use an if statement to turn a constraint on
> or off.
> For example in my problem I have the following constraint:
>
> subject to linctr14 {i in PeriodsCount: i == 1}: StorageEnergy[i] =
>
On Tue, 2020-11-24 at 19:11 +, Manuel Castro wrote:
> Hi there,
>
> I am currently using gusek as an IDE to model and run GLPK.
> I use the following statement to read from CSV file.
>
> table tab_plant IN "CSV" "plants.csv" : I <- [plant], a ~ capacity;
>
> This assumes that the file is
Forwarded Message
From: Diederik Veenendaal
To: help-glpk@gnu.org
Subject: 4.60 script not working in 4.65
Date: Tue, 10 Nov 2020 09:28:13 +0100
> Dear Andrew,
> Thank you for providing GLPK. I'm trying to share a knapsack ILP
> script that works on my computer with someone
Forwarded Message
From: "Andraschko, Bernhard"
To: help-glpk@gnu.org
Subject: Portable version
Date: Mon, 2 Nov 2020 07:21:45 +
> Hi,
>
> I'm currently working for the Chair of Symbolic Computation in Passau
> and help developing ApCoCoA-2, a computer algebra framework
Forwarded Message
From: Manuel Castro
To: help-glpk@gnu.org
Subject: Help w. Constraint Please
Date: Sat, 24 Oct 2020 09:02:40 -
> Hi there,
>
> I would be thankful if you could help me in clarifying my questions
> below.
> I really appreciate your support. Many thanks in
Forwarded Message
From: Manuel Castro
To: help-glpk@gnu.org
Subject: Help please
Date: Sat, 17 Oct 2020 17:02:16 -
> Hi there,
>
> I have the following constraint:
>
>
> subject to linctr20 {i in 1..365}:
> sum {j in (i - 1) * 48 + 1..(i * 48)}
or not, I known that in the
> general case it is not, but for me it is a desirable behavior, and I
> think that the software should be as close to that behavior as
> possible.
>
> El sáb, 26-09-2020 a las 15:40 +0300, Andrew Makhorin escribió:
> >
> > In case of TeX it is impor
Forwarded Message
From: Jeffrey Kantor
To: Chris Matrakidis
Cc: Domingo Alvarez Duarte , help-glpk@gnu.org
Subject: Re: Solver performance solving examples/life_goe.mod
Date: Sat, 26 Sep 2020 10:23:18 -0400
> Will there be a point where the GLPK package will be opened for
>
On Sat, 2020-09-26 at 09:51 +0200, Manuel Muñoz Márquez wrote:
> > Why do you want glpk to produce absolutely identical results on
> > different platforms? This has no practical sense.
> >
>
> I think this is a desirable behavior. If your are solving a real
> problem it look very weird if you
On Sat, 2020-09-26 at 13:54 +0200, Domingo Alvarez Duarte wrote:
> Hello !
>
> Testing GLPK I left it solving examples/lie_goe.mod for more than 2
> hours and it didn't found a solution (wasm and native) then I stopped
> then and tried with cplex/gurobi/xpress/scip all of then gives a
>
> Something doesn't match for me, because I'm compiling GLPK/glpsol
> with and without optmization and get the same reported cuts:
>
> Cuts on level 0: gmi = 5; mir = 44; cov = 20; clq = 3; !! *
> the same
> =
> Cuts on level 0: gmi = 5; mir = 44; cov = 20; clq = 3; *
> the
On Fri, 2020-09-25 at 10:04 +0200, Domingo Alvarez Duarte wrote:
> Hello Michael !
>
> Thank you for reply !
>
> I'll take into account the use of possible wider float format for
> intermediary values using something like your suggestion of
> redefinable
> type like "glp_double_t" (actually in
m and native.
>
> On x86_64 "--cuts" improves in wasm but degrade in native.
>
> I hope this could give hints to improve GLPK solver performance by
> inspecting the decision's criteria and eventually find a better ones.
>
> Anyone can give any idea with this data
ta as a rule produces different results
on different platforms.
>
> Cheers !
>
> On 21/9/20 15:08, Andrew Makhorin wrote:
> > > Does someone can give a possible explanation ?
> >
> > floating-point computations
>
>
> Does someone can give a possible explanation ?
floating-point computations
On Wed, 2020-09-09 at 18:17 -0300, yami...@cock.li wrote:
> Hey,
>
> I'm trying to make a program that populates a binary matrix keeping
> as
> many blank lines as possible, e.g.
>
> > 00|
> > 11|
> > 10|
>
> instead of
>
> > 10|
> > 10|
> > 10|
>
>
> Since I know the sum of the lines won't
On Sat, 2020-08-29 at 15:29 +0200, Domingo Alvarez Duarte wrote:
> Hello !
>
> With this commit I'm close for a proof of concept of GMPL with multi
> problem, multi solve, repeat and let statements.
>
> The let needs work for the dependence hell when update a parameter.
>
> The multi solve
> While trying to implement multi solve statements I found that in GMPL
> the display of an objective function after solving do not show the
> optimal value.
BTW, glpsol warns about that:
[...]
38 lines were read
Generating Reduced_Cost...
Generating Width_Limit...
Model has been successfully
> While trying to implement multi solve statements I found that in GMPL
> the display of an objective function after solving do not show the
> optimal value.
Please see
http://en.wikibooks.org/wiki/GLPK/Troubleshooting#Objective_shift_term_ignored_when_exported
On Tue, 2020-08-25 at 22:12 +0200, Domingo Alvarez Duarte wrote:
> Hello !
>
> I'm experimenting with allow local set/param declarations inside
> scoped
> blocks (for/if/then/else), it's the base to possibly experiment
> further
> with problem/callback/function declarations you can
> Probably something like MPL (Math Programming
> Language) developed by G.Dantzig in 70's is what you would like to
> have;
> see https://dl.acm.org/doi/10.1145/800184.810495 .
>
I've got a scanned copy of this Tech. Report (May 1968, 92 pages); so if
someone is interested, I can post it via
Forwarded Message
From: Jeffrey Kantor
To: Andrew Makhorin
Cc: "Meketon, Marc" , Domingo Alvarez
Duarte , help-glpk@gnu.org
Subject: Re: Adding if/then/else statement to GMPL
Date: Mon, 24 Aug 2020 12:38:42 -0500
> Respectfully, and I very much appreciate the c
am; see https://lilypond.org/ ), where the domain-
specific part is built over the Scheme programming language (a dialect
of Lisp): in normal circumstances the user writes all things with
domain-specific constructions, but if something unusual is needed,
he/she may write things on a lower level directly in Scheme.
Andrew Makhorin
Forwarded Message
From: Jeffrey Kantor
To: "Meketon, Marc"
Cc: Andrew Makhorin , Domingo Alvarez Duarte , help-glpk@gnu.org
Subject: Re: Adding if/then/else statement to GMPL
Date: Mon, 24 Aug 2020 09:54:33 -0500
> This would be another vote for extending GM
On Sun, 2020-08-23 at 15:36 +0200, Domingo Alvarez Duarte wrote:
> Hello !
>
> Also I've added the break/continue statements here
> https://github.com/mingodad/GLPK/commit/9d70a37b16bd377722eeb3880fcf86
> bb3b812118
>
>
> Again any comment/suggestion is welcome !
>
> Cheers !
>
>
>
On Sun, 2020-08-16 at 11:53 +0200, Domingo Alvarez Duarte wrote:
> Hello !
>
> I just found a class of models that can exhibit a huge memory usage
> difference depending on if we add or not add parameter missing values
> when there is a default value declaration for then.
>
> See this model
On Mon, 2020-08-10 at 14:28 +0200, Domingo Alvarez Duarte wrote:
> Hello !
>
> Replacing usages of AVL tree by SplayTree I found that AVL tree
> silently
> accepts duplicate keys on "avl_insert_node" see example bellow, there
> is
> only one way to find by key "avl_find_node" which make it
On Sat, 2020-08-01 at 11:26 +0200, Domingo Alvarez Duarte wrote:
> Hello !
>
> This is my fourth time trying to replace the actual TUPLE struct
> representation https://github.com/mingodad/GLPK/tree/new-tuple and
> I'm
> struggling again in understand/rewrite some parts of the code,
> mainly
>
On Tue, 2020-07-28 at 20:58 +0530, Biplab Kanti Sen wrote:
> Thanks for your kind response. Is it possible to get the exact time
> in millisecond ? Is there any wayout to change the format spec "%.1f"
> ? I need to know the exact time required for solving the problem. I
> need this value for a
On Tue, 2020-07-28 at 19:48 +0530, Biplab Kanti Sen wrote:
> Sir/Madam,
>
> I am Biplab kanti sen, would like to state you that, I use GLPK to
> solve linear programs. I found that, one of my program is
> successfully running, but the execution time is showing as "Time
> used: 0.0 sec". Is there
On Fri, 2020-07-24 at 13:04 -0500, Michael Hennebry wrote:
> On Fri, 24 Jul 2020, Andrew Makhorin wrote:
>
> > The issue can be illustrated by the following example:
> >
> > for (i = 0; i < 100; i++)
> > for (j = 0; j < 100; j++)
> > for (k
On Sat, 2020-07-25 at 13:35 +0200, Domingo Alvarez Duarte wrote:
> Hello !
>
> Trying to change the actual TUPLE structure by:
>
>
>
> #ifndef TUPLE_SIZE_T
> #define TUPLE_SIZE_T int
> #endif
> struct TUPLE
> {
> TUPLE_SIZE_T size;
> TUPLE_SIZE_T refcount;
> SYMBOL
> if (j == i+1 && j == j+2)
>
Must read
if (j == i+1 && k == j+2)
p;& j == j+2)
foo(i, j, k);
Would you expect the C compiler to optimize this fragment in order not
to perform obvious excessive computations?
Andrew Makhorin
> Do you have any tests or know someone that has then and can share
> then ?
> (Preferable in a public repository.)
>
>
You might try models from glpk/examples.
>
> After doing some experimentation I think I found an easy way to
> eliminate unnecessary set copies here is a commit on
> https://github.com/mingodad/GLPK/commit/6f3da6ab31ca8d710f706f60635e5
> b17cf2ded40,
> also see bellow, glpsol now uses 1/3 of the memory and is slight
> faster:
mber of set element copies (see bellow).
Please note that most of the copies might be temporary quantities
that exist (allocated in the memory) only during evaluation of the
(sub)expressions involving these quantities.
Best regards,
Andrew Makhorin
OST/libglpk-java-
> 1.12.0/swig'
> make[1]: *** [all-recursive] Error 1
> make[1]: Leaving directory `/storage2/APPS/MOST/libglpk-java-1.12.0'
> make: *** [all] Error 2
>
>
>
> I have following dependencies installed:
> > glpsol --version
> GLPSOL: GLPK LP/M
Forwarded Message
From: sahani rathnasiri
To: help-glpk@gnu.org
Subject: Need help in Fixing GUSEK Code
Date: Fri, 10 Apr 2020 19:08:39 +1000
> Hi All,
>
> I am running code in GUSEK and I need to define three indexes. I am
> getting a syntax error. Please help me fix this.
>
On Wed, 2020-03-04 at 15:29 +0100, Jacopo Pierotti (Optimisation)
wrote:
> Dear Mao,
>
> my name is Jacopo Pierotti and I am a PhD candidate in
> Optimization.
>
> I'm writing you because I am working on heuristic solutions for MILP.
> To
> test my algorithm, I would like to know what kind
Forwarded Message
From: Jonas Stenberg
To: help-glpk@gnu.org
Subject: Intellij syntax highlighting
Date: Wed, 12 Feb 2020 13:56:25 +
> In case anyone is interested: I have created a config file that
> brings
> syntax highlighting for GLPK model files to Intellij.
>
>
ould help with this),
however I will be unable to work on it at least to the end of this
year.
Best regards,
Andrew Makhorin
>
> Best regards
>
> Heinrich
>
Forwarded Message
From: sysad...@gnu.org
To: help-glpk@gnu.org
Subject: Fyi: this list, help-glpk, just had it's subject [tag] and
footer removed
Date: Thu, 24 Oct 2019 16:17:36 -0400
The Free Software Foundation has changed the GNU Mailman settings on
this list. The short
Forwarded Message
From: Reza Rafiee
To: m...@gnu.org
Subject: Installation of software
Date: Sat, 6 Apr 2019 16:30:11 +0430
> Dear GLPK team,
> I have downloaded GLPK package (version 4.65) and wanted to run it on
> a 64-bit windows. However, I could not find the steps to
Forwarded Message
From: Marc Garcia
To: help-glpk@gnu.org
Subject: Project development
Date: Tue, 2 Apr 2019 12:02:16 +0100
Hi there,
I'd like to get involved with glpk development, and I found the
information on the website: https://www.gnu.org/software/glpk/ but I'm
used to
rom hkp server keys.gnupg.net
gpg: key 5981E818: "Andrew Makhorin " not changed
gpg: Total number processed: 1
gpg: unchanged: 1
C:\Users\wangp>gpg --verify glpk-4.32.tar.gz.sig
gpg: can't open `glpk-4.32.tar.gz.sig'
gpg: verify signatures failed: file open error
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