Bonjour svp j'ai besoin de lien de téléchargement de R version la plus récentes. en plus je trouve des difficultés de téléchargement des fonctions de glpk je sais quelle est le problème. prière de m'envoyer aussi une site des téléchargement des fonctions et la procédure à suivre merci pour votre réponse bien cordialement faiza hamdi
2013/7/16 <[email protected]> > Send Help-glpk mailing list submissions to > [email protected] > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.gnu.org/mailman/listinfo/help-glpk > or, via email, send a message with subject or body 'help' to > [email protected] > > You can reach the person managing the list at > [email protected] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Help-glpk digest..." > > > Today's Topics: > > 1. problem with glp_load_matrix (Hector Arciniegas) > 2. Re: problem with glp_load_matrix (Michael Hennebry) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 15 Jul 2013 13:00:06 -0430 > From: Hector Arciniegas <[email protected]> > To: [email protected] > Subject: [Help-glpk] problem with glp_load_matrix > Message-ID: <[email protected]> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Dear friends. > I am using python with glpk (python-glpk_0.4.45-1_i386) under ubuntu > 12.04 for resolve knapsack problems, this work good from 4 to 500 > variables; but for 1000 variables send me the follow message: "Violaci?n > de segmento (`core' generado)", after execute "glp_load_matrix(prob, > 2*items, ia, ja, ar)" > Has somebody one idea about?. Thanks. > Hector. > > > > ------------------------------ > > Message: 2 > Date: Mon, 15 Jul 2013 15:13:14 -0500 (CDT) > From: Michael Hennebry <[email protected]> > To: Hector Arciniegas <[email protected]> > Cc: [email protected] > Subject: Re: [Help-glpk] problem with glp_load_matrix > Message-ID: > <[email protected]> > Content-Type: text/plain; charset="iso-8859-1"; Format="flowed" > > On Mon, 15 Jul 2013, Hector Arciniegas wrote: > > > Dear friends. > > I am using python with glpk (python-glpk_0.4.45-1_i386) under ubuntu > 12.04 > > for resolve knapsack problems, this work good from 4 to 500 variables; > but > > for 1000 variables send me the follow message: "Violaci?n de segmento > > (`core' generado)", after execute "glp_load_matrix(prob, 2*items, ia, ja, > > ar)" > > Has somebody one idea about?. Thanks. > > It looks like an attempt to dereference a null pointer. > That is what malloc returns if it fails. > Does glpk or python use malloc without testing the return value? > My recollection is that glpk uses xmalloc, which is > a wrapper that tests the return value of malloc. > That said, a 1000 variable knapsack problem seems > a little small to be causing memory issues. > > BTW a general MIP solver might not be the > best way to solve your knapsack problems. > That said, if it works well enough, > 'tain't worth much effort to find something better. > > -- > Michael [email protected] > "On Monday, I'm gonna have to tell my kindergarten class, > whom I teach not to run with scissors, > that my fiance ran me through with a broadsword." -- Lily > > ------------------------------ > > _______________________________________________ > Help-glpk mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/help-glpk > > > End of Help-glpk Digest, Vol 128, Issue 7 > ***************************************** >
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