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Re: GLPK memory problem


From: Andrew Makhorin
Subject: Re: GLPK memory problem
Date: Wed, 04 May 2022 17:10:57 +0300

On Tue, 2022-05-03 at 13:29 +0200, Domingo Alvarez Duarte wrote:
> Maybe there is a mistake on the previous reply, GLPK is 32/64 bits 
> depending on the compilation/platform/OS on 64 bits operating systems
> it 
> can allocated more than 4GB of memory.


I meant that for indexing arrays glpk routines use variables of type 
int; since int is a 32-bit quantity even in the LP64 programming model,
it is impossible to work with arrays having more than 2^32 elements.
Sorry for misunderstanding.


> 
> Can you use gdb to see how much memory was attempted to allocate ?
> 
> 
> On 3/5/22 13:11, Andrew Makhorin wrote:
> > On Tue, 2022-05-03 at 06:38 +0000, 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 tips?
> > 
> > GLPK is a 32-bit software, so the addressing memory is limited to 4
> > Gb.
> > 
> > 
> > >   
> > > Best,
> > > Georgios
> > >   
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