Re: [Help-glpk] glpk 4.50 release information

Hi, Are there some new thoughts about the issue? I don't think this email was answered after it was sent a few months ago. Regards, *Sylvain Fournier* Operations Research Manager *48 3239-2428* WPLEX Software Ltda. Rod SC 401 no. 8600 Corporate Park bloco 5 sala 101 88050-000 Santo Antôn

Re: [Help-glpk] glpk 4.50 release information

Hi Andrew, How is the attempt to solving the bug I reported? I recently downloaded the newest version of GLPK (4.65) and it is still crashing. If it was not solved yet, could you please provide me with the fix you had sent at that time? Thanks! *Sylvain Fournier* Gerente de Pesquisa Operacional

Re: [Help-glpk] multi-knapsack?

Hi Bjørnar, You may find some ideas from the number partitioning problem: https://en.wikipedia.org/wiki/Partition_problem Regards, *Sylvain Fournier* On 26 May 2017 at 01:25, Andrew Makhorin wrote: > On Thu, 2017-05-25 at 13:54 +0200, Bjørnar Ness wrote: > > Hello, glpk > &g

Re: [Help-glpk] GLPK for Windows 4.57, GLPK for Java 1.3.0, and GLPK for C#/CLI 1.1.0 released

It seems to work fine with this option. Thanks Heinrich! *Sylvain Fournier* 2015-12-03 15:16 GMT-02:00 Heinrich Schuchardt : > Hello Sylvain, > > ./configure --help > > proposes: > > --enable-libpathload GLPK library from java.library.path >

Re: [Help-glpk] GLPK for Windows 4.57, GLPK for Java 1.3.0, and GLPK for C#/CLI 1.1.0 released

iss something, such as a compilation parameter that would help me? If not, wouldn't it possible to add (also for Linux) this System.loadLibrary("glpk") before the System.loadLibrary("glpk_java") in glpk.i? I am not sure I was very clear... But I hope you understood anywa

Re: [Help-glpk] GLPK for Windows 4.57, GLPK for Java 1.3.0, and GLPK for C#/CLI 1.1.0 released

Thanks Heinrich! http://sourceforge.net/projects/winglpk/ still contains the old libraries, right? I'll test it after the next update and let you know if there is any problem. And what about providing the Linux libraries in the next releases? *Sylvain Fournier* 2015-11-30 18:54 GMT-

Re: [Help-glpk] GLPK for Windows 4.57, GLPK for Java 1.3.0, and GLPK for C#/CLI 1.1.0 released

iling the libraries when I have to update GLPK, but then I'd like to understand why the libraries are given for Windows and not for Linux. Regards, *Sylvain Fournier* 2015-11-08 23:27 GMT-02:00 Heinrich Schuchardt : > GLPK for Windows 4.57 has been released. It provides 32

Re: [Help-glpk] Suggestions to solve the master problem faster in a Branch-and-Price model.

e basis invalid, wouldn't it?) *Sylvain Fournier* Analista de Pesquisa Operacional *48 3239-2423* WPLEX Software Ltda. Rod SC 401 no. 8600 Corporate Park bloco 5 sala 101 88050-000 Santo Antônio de Lisboa, Florianópolis SC +55 48 3239-2400 wplex.com.br [image: WPLEX] 2014-03-22 4:23 GMT-0

[Help-glpk] Suggestions to solve the master problem faster in a Branch-and-Price model.

00: obj = 8.626295607e+04 infeas = 3.034e-14 (3) *224500: obj = 8.625357631e+04 infeas = 1.348e-14 (3) *225000: obj = 8.625218764e+04 infeas = 1.569e-14 (3) *225500: obj = 8.624515500e+04 infeas = 1.173e-14 (3) *225775: obj = 8.624472901e+04 infeas = 1.272e-14 (3) OPTIMAL SOLUTION FOU

Re: [Help-glpk] Gplk and exception handling

Hello Heinrich, Thanks for the explanations. Best regards, *Sylvain Fournier* Analista de Pesquisa Operacional *48 3239-2423* WPLEX Software Ltda. Rod SC 401 no. 8600 Corporate Park bloco 5 sala 101 88050-000 Santo Antônio de Lisboa, Florianópolis SC +55 48 3239-2400 wplex.com.br [image: WPLEX

Re: [Help-glpk] Gplk and exception handling

veral threads (GmplSwing). Why is it necessary in this case and not in the other examples? *Sylvain Fournier* Analista de Pesquisa Operacional *48 3239-2423* WPLEX Software Ltda. Rod SC 401 no. 8600 Corporate Park bloco 5 sala 101 88050-000 Santo Antônio de Lisboa, Florianópolis SC +55 48 3239

Re: [Help-glpk] Gplk and exception handling

could you tell me since which version? Thanks! *Sylvain Fournier* Analista de Pesquisa Operacional *48 3239-2423* WPLEX Software Ltda. Rod SC 401 no. 8600 Corporate Park bloco 5 sala 101 88050-000 Santo Antônio de Lisboa, Florianópolis SC +55 48 3239-2400 wplex.com.br [image: WPLEX] 2014-03-10

Re: [Help-glpk] Fwd: Crash running the RELAX-IV algorithm

Hello Heinrich, Thanks, I'll have a look at this paper. And what about the constant GLPKConstants.GLP_JAVA_A_RC ? Regards, -- *Sylvain Fournier* Analista de Pesquisa Operacional *48 3239-2423* WPLEX Software Ltda. Rod SC 401 no. 8600 Corporate Park bloco 5 sala 101 88050-000 Santo Antôn

Re: [Help-glpk] GLPK for Windows 4.49, GLPK for Java 1.0.25

Thanks Heinrich, I'll wait for the Swig fix. -- *Sylvain Fournier* Analista de Pesquisa Operacional *48 3239-2423* WPLEX Software Ltda. Rod SC 401 no. 8600 Corporate Park bloco 5 sala 101 88050-000 Santo Antônio de Lisboa, Florianópolis SC +55 48 3239-2400 wplex.com.br [image: WPLEX] 2

Re: [Help-glpk] GLPK for Windows 4.49, GLPK for Java 1.0.25

Ok, but then how do I get a glp_arc from a SWIGTYPE_p_glp_arc and vice-versa? (same question for glp_graph) Is there some routine like doubleArray_getitem() or intArray_getitem()? In the MinimumCostFlow.java example, there is no glp_graph or glp_arc object. Thanks, -- *Sylvain Fournier* Analista

Re: [Help-glpk] GLPK for Windows 4.49, GLPK for Java 1.0.25

this feature in version 4.47. I look forward to testing the new minimum cost flow algorithm! Cheers, -- *Sylvain Fournier* Analista de Pesquisa Operacional *48 3239-2423* WPLEX Software Ltda. Rod SC 401 no. 8600 Corporate Park bloco 5 sala 101 88050-000 Santo Antônio de Lisboa, Florianópolis SC +55 48

Re: [Help-glpk] Building a graph on the fly

pron > > NEU: FreePhone 3-fach-Flat mit kostenlosem Smartphone! > Jetzt informieren: http://mobile.1und1.de/?ac=OM.PW.PW003K20328T7073a > -- *Sylvain Fournier* Analista de Pesquisa Operacional *48 3239-2423* WPLEX Software Ltda. Rod SC 401 no. 8600 Corporate Park bloco 5 sal

Re: [Help-glpk] [Fwd: Re: Building a graph on the fly]

gt; wrapper, which probably is needed for Java. > > -- > Nigel Galloway > nigel_gallo...@operamail.com > > > On Tue, Apr 17, 2012, at 06:18 PM, Andrew Makhorin wrote: > > Forwarded Message > > From: Sylvain Fournier > > To: Andrew Makhorin

[Help-glpk] Building a graph on the fly

iling list archives, or in the files included in the GLPK distribution (examples and documentation). Did I miss something? Cheers, -- *Sylvain Fournier* Analista de Pesquisa Operacional *48 3239-2423* WPLEX Software Ltda. Rod SC 401 no. 8600 Corporate Park bloco 5 sala 101 88050-000 Santo Antônio

[Help-glpk] Deleting active constraints

point: when I solve the LP again, the first solution (at iteration 0) has a lower objective (all right) but the value of the infeasibility increases. How is it possible that the infeasibility increases although I removed a constraint? I am (still) using the GLPK version 4.38. Best regards, Sy

Re: [Help-glpk] Thread safety of GLPK

do I have to initialize the environment thread pointer? Sylvain Fournier Date: Thu, 15 Apr 2010 14:06:15 +0400 > From: Andrew Makhorin > Subject: Re: [Help-glpk] Thread safety of GLPK > To: "Hammond, Paul" > Cc: help-glpk@gnu.org > Message-ID: <474395093.2010041514

[Help-glpk] Re: Help-glpk Digest, Vol 86, Issue 32

Thanks Xypron and Andrew for solving my problem! This new error routine will be a good reason for me to upgrade my GLPK version. :-) Sylvain Date: Sun, 24 Jan 2010 07:55:22 +0300 > From: Andrew Makhorin > Subject: Re: [Help-glpk] Application crash due to assert in GLPK > To: xypron > Cc: Help-g

[Help-glpk] Application crash due to assert in GLPK

lication in order to treat it appropriately? Thanks, Sylvain Fournier ___ Help-glpk mailing list Help-glpk@gnu.org http://lists.gnu.org/mailman/listinfo/help-glpk

Re: [Help-glpk] RE: Feature request - option to flush output

direction, only for the GLPK routines? I see that there is a routine glp_term_hook, but I'd like to see an example (in Java) of how to use it in the case of the Java interface developed by Xypron ( http://winglpk.sourceforge.net/). 2009/9/14 Michael Hennebry > On Mon, 14 Sep 2009,

[Help-glpk] RE: Feature request - option to flush output

Extending the subject, is it possible with GLPK to redirect this output to a file instead of stdout? > Date: Mon, 14 Sep 2009 19:47:20 +0400 > From: "Hart, William E" > Subject: RE: [Help-glpk] Feature request - option to flush output > To: help-glpk@gnu.org > Message-ID: <467045031.20090914194.

Re: [Help-glpk] Compiling GLPK for Java under Linux

For the time being, my branch-and-bound algorithm is not optimal. Anyway, I won't need an optimal solution (it may be difficult to reach it due to the size of the problems I am facing). So even if my branch-and-bound algorithm was correct, as I have to stop the run before the optimal solution, I ma

Re: [Help-glpk] Compiling GLPK for Java under Linux

Thanks for the link, from now on I won't expect the same behavior for Windows and Linux when solving a linear model. But what about the difference in the number of digits? 2009/6/23 Andrew Makhorin > > I am getting back to this subject because I am facing a small > > problem using GLPK both on W

[Help-glpk] Compiling GLPK for Java under Linux

lvain 2009/6/1 Sylvain Fournier > I just tested it (only the target "all" of the Makefile), and it seems to > work well. Many thanks Xypron! > I have to point out that I had to make small changes in the Makefile to > make it work: > In the first call to libtool (gcc ... s

[Help-glpk] Re: Help-glpk Digest, Vol 78, Issue 31

PDT) > From: xypron > Subject: [Help-glpk] Compiling GLPK for Java under Linux > To: Help-glpk@gnu.org > Message-ID: <23804217.p...@talk.nabble.com> > Content-Type: text/plain; charset=us-ascii > > > Hello Sylvain > > Sylvain Fournier wrote: > > &g

Re: [Help-glpk] GLPK 4.38 for Java under Linux

I already thought of this way of getting rid of a variable. But keeping all the variables in the model, even bounded to 0, won´t slow down the simplex method? (there may be quite a lot of "removed" variables) 2009/5/27 Andrew Makhorin > Rather than to "physically" remove a basic column from the

Re: [Help-glpk] GLPK 4.38 for Java under Linux

ID: <23686380.p...@talk.nabble.com> > Content-Type: text/plain; charset=us-ascii > > > Hello Sylvain, > > Sylvain Fournier wrote: > > > > I then saw that there is a glpk_4_38_java library available ( > > http://winglpk.sourceforge.net/), I tried it on

Re: [Help-glpk] GLPK 4.38 for Java under Linux

2009/5/23 Andrew Makhorin > > > Lpx_warm_up will be replaced by glp_warm_up, which will provide the > same functionality. > > Thanks for the quick and detailed answer. I will keep using the warm up functionality, because I don´t really have an idea of which variable(s) should enter the basis. Syl

[Help-glpk] GLPK 4.38 for Java under Linux

If you want more information, feel free to ask! Sylvain Fournier > Date: Sat, 2 May 2009 16:32:01 +0300 > From: Andrew Makhorin > Subject: [Help-glpk] glpk 4.38 release information > To: help-glpk@gnu.org > Message-ID: <1566961953.20090502163...@gnu.org> > Content-

[Help-glpk] Re: Help-glpk Digest, Vol 77, Issue 8

The problem is that I am using GLPK on Linux, and I need a .so file rather than .dll. Sylvain > > Date: Tue, 07 Apr 2009 17:07:07 +0200 > From: Denis Debarbieux > Subject: RE : [Help-glpk] Obtain the variables values in a GLPK 4.8 >JavaInterface > To: help-glpk@gnu.org > Message-ID:

[Help-glpk] Obtain the variables values in a GLPK 4.8 Java Interface

Hello, I am currently using GLPK with the Java interface developped and made available in the following website: http://bjoern.dapnet.de/glpk/ When I solve a LP and I want to retrieve the values of the solution (using getColPrim() and getColDual(), for example), these values (they are of type doub