Hi, Sorry,
Section 0.4.2 of axiom book => accessing earlier result. It's a little dangerous in term of memory management... Cheers, Greg > -----Message d'origine----- > De : [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] la > part de Vanuxem Grégory > Envoyé : mercredi 22 juin 2005 03:10 > À : Bill Page (E-mail) > Cc : axiom-developer@nongnu.org > Objet : RE: [Axiom-developer] Memory leak in Axiom > > > Hi, > > > -----Message d'origine----- > > De : Page, Bill [mailto:[EMAIL PROTECTED] > > Envoyé : mercredi 22 juin 2005 01:11 > > À : 'Vanuxem Grégory' > > Cc : axiom-developer@nongnu.org > > Objet : RE: [Axiom-developer] Memory leak in Axiom > > > > > > On Tuesday, June 21, 2005 3:43 PM Vanuxem Grégory wrote: > > > > > It seems that there is a memory leak in Axiom; > > > > > > Open a shell, type 'top' and observe residual and virtual memory. > > > > > > Open AXIOMsys and type > > > > > > new(1000,1000,0.0)$Matrix(SF); > > > > > > and repeat this action. > > > > I can not reproduce this error using the Windows version > > of Axiom 0.1.4. This version of Axiom is based GCL 2.6.5. > > On windows I can monitor memory usage with Task Manager, > > Performance tab. > > > > What version of Axiom and operating system are you using > > for your test? What version of GCL was used to build Axiom? > > GCL-2.6.6 on axiom patch 40 > > > > > > A (1000,1000) C double float array takes 7.63 Mb. > > > > > > If I alloc a contiguous storage memory array of 1000x1000, > > > amount of virtual and residual memory augment of 10Mb. It seems > > > it is never released. > > > > > > I haven't found this in gcl. > > > > Could you describe the test you use on GCL? What version of > > gcl are you using? > > (make-array '(1000 1000) :element-type 'long-float :initial-element 0) > > about 50 times > > > > > > > > > Any idea ? > > > > If you repeat this process several times: > > > > Sorry, > 1) Open Axiom > 4) display residual and virtural memory > -- avoid printing > new(1000,1000,0)$Matrix(SF); > -- memory has increased of 10Mb > new(1000,1000,0)$Matrix(SF); > -- memory has increased of 10Mb > new(1000,1000,0)$Matrix(SF); > -- memory has increased of 10Mb > new(1000,1000,0)$Matrix(SF); > -- memory has increased of 10Mb > new(1000,1000,0)$Matrix(SF); > -- memory has increased of 10Mb > new(1000,1000,0)$Matrix(SF); > -- memory has increased of 10Mb > new(1000,1000,0)$Matrix(SF); > -- memory has increased of 10Mb > . > . > . > a lot of times (axiom will crash) => xmalloc failed > > > Cheers, > > Greg > > > > > > For example do this 5 times in a row, do you find that the > > total available memory is constantly decreasing? > > > > If this is not that case, but only occurs on the first > > iteration, then what you might be seeing is some kind of > > executable cacheing being done by the operating system. > > (Does linux do that? Some versions of Windows do. I see > > such an effect under Windows XP.) > > > > Regards, > > Bill Page. > > > > > > > _______________________________________________ > Axiom-developer mailing list > Axiom-developer@nongnu.org > http://lists.nongnu.org/mailman/listinfo/axiom-developer > _______________________________________________ Axiom-developer mailing list Axiom-developer@nongnu.org http://lists.nongnu.org/mailman/listinfo/axiom-developer
