Bill Allombert on Mon, 26 May 2008 22:19:25 +0200

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Re: Erreur de segmentation ???

On Mon, May 26, 2008 at 11:35:34AM +0200, Olivier Ramare wrote:
> Bill Allombert a écrit :
> >Now of course, the question is whether this is a memory leak in GP,
> >or you are allocating too much memory.
> >  
> Ok, I found it :-)
> This script is not supposed to allocate any (sizeable) memory chunk.
> The main part Walk does not.
> It calls DiscreteValue, which has local variables and this is the
> source of all the stack. The main variable is
> mybiggamma = vector(bigD)  (well, bigD is 2 here)
> and making this variable global saves a lot (but not all: the
> stack still increases somewhat but at a much lower rate).
> If I'm not mistaken, this *is* a memory leak.

I reran your script with PARI 2.4.3SVN (the development version) and 
the memory usage was constant (about 6Mb). So this really start
looking like a memory leak in the stable version.