[Paraview] PV and the STL: memory allocation issue

[Fred Fred]

Yes this is exactly what I want.
The aim of this data structure is to maintain, for each pixel of an image, a list (which could be empty) of all points included in the corresponding area (ie (x,y,z) lists, which are coded as vtkstd::vector<double>).
So later in the code I initialize this structure as follow:

    fill(this->grid.begin(), this->grid.end(), vtkstd::vector<vtkstd::vector<double> >());

and then I add points in each list as follow:

    vtkstd::vector<double> pt2D;
    pt2D.push_back(pt[0]);
    pt2D.push_back(pt[1]);
    this->grid[*it].push_back(pt2D);

One more time, something may be wrong but it works well with VTK.

Date: Thu, 17 Sep 2009 20:01:25 +0100
Subject: Re: [Paraview] PV and the STL: memory allocation issue
From: paul.m.edwards at gmail.com
To: stan1313 at hotmail.fr
CC: berk.geveci at kitware.com; paraview at paraview.org

I think there is another problem with your code and it just fails in that place - you are probably overwriting memory somewhere.  By having a vector<vector<vector<double> > > > and then just allocating the first to size of x*y, you will result in a vector or length x*y each containing empty vector<vector<double> >'s.  Are you sure this is what you want? (if that makes sense)

If you post the code I will look.
Regards,Paul
2009/9/17 Fred Fred <stan1313 at hotmail.fr>






Yes this is exactly the line of code that fails, I put printf();getchar(); items before and after (sorry I do not use a debugger).
Ok I may send the code but I doubt it could help because, this line is clear and I checked the argument (=100), so what?


Date: Thu, 17 Sep 2009 16:34:29 +0100
Subject: Re: [Paraview] PV and the STL: memory allocation issue
From: paul.m.edwards at gmail.com

To: stan1313 at hotmail.fr
CC: berk.geveci at kitware.com; paraview at paraview.org


Are you running this through a debugger?  And, is that the line that it is failing on?  Finally, can you post the PV code that is failing?

Regards,
Paul


2009/9/17 Fred Fred <stan1313 at hotmail.fr>







Hmmm, doubtful since in my test this->grid_xsize == this->grid_ysize == 10 !!

> Date: Thu, 17 Sep 2009 08:11:43 -0400
> Subject: Re: [Paraview] PV and the STL: memory allocation issue
> From: berk.geveci at kitware.com


> To: stan1313 at hotmail.fr
> CC: paraview at paraview.org
> 

> In all likelihood, the allocation is failing because the process is
> unable to allocate the memory you ask it to. I am not surprised that
> this  happens in ParaView not in VTK because ParaView tends to


> allocate a fair number of small objects probably segmenting the memory
> somewhat. Did you try a 64 bit ParaView?
> 
> On Wed, Sep 16, 2009 at 11:16 AM, Fred Fred <stan1313 at hotmail.fr> wrote:


> > I use the STL through vtkstd:
> >
> >   vtkstd::vector<vtkstd::vector<vtkstd::vector<double> > > grid;
> >   [...]
> >   this->grid.clear();
> >   this->grid = vtkstd::vector<vtkstd::vector<vtkstd::vector<double> >


> >>(this->grid_xsize*this->grid_ysize);
> >
> > It works well on VTK but on PV I can this error at run time:
> >
> >   terminate called after throwing an instance of 'std::bad_alloc'


> >   what():  St9bad_alloc
> >
> > If I change the initialization line by:
> >
> >   this->grid.resize(this->grid_xsize*this->grid_ysize);
> >
> > I get another message:


> >
> >   terminate called after throwing an instance of 'std::length_error'
> >   what():  vector::_M_fill_insert
> >
> > which means that the memory allocation by the vtkstl library crashes.


> > Does anybody know about this issue?
> >
> >
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