[Interest] 64 bit capable QVector

[Mehmet İpek]

You can use QLinkedList if it is convenient for your algorithm. Btw, size
limit of QVector is 2^31 in 64 bit platforms too?
On Sep 3, 2013 5:34 PM, "Michael Jackson" <imikejackson at gmail.com> wrote:

>
> On Sep 3, 2013, at 10:23 AM, André Somers <andre at familiesomers.nl> wrote:
>
> > Op 3-9-2013 16:12, Michael Jackson schreef:
> >> I am curious as to what Qt class (if any) folks use for memory
> allocations larger then 2^31 elements? We write some software that analyzes
> large scientific data sets and I am trying to figure out if I should stick
> with std::vector in a few spots or go with something else. We have our own
> Array class for most of the codes but in a few places we just use a
> std::vector for convenience. If anyone has any thoughts that would be great
> to hear those.
> >>
> >> --
> >> Mike Jackson
> >> dream3d.bluequartz.net  (github.com/dream3d/DREAM3D)
> >>
> >> _______________________________________________
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> >
> > I think you should not use vectors for such huge date structures in any
> > case. It is not reasonable to expect that you can even allocate such
> > huge continious blocks of memory I think. When handling so much data, I
> > think you probably need custom data structures too.
> >
> > André
>
> It is reasonable to expect we can allocate the amounts of RAM that we want
> to allocate. The machines that run the software should have adequate RAM to
> do the allocations. We have machines ranging from 16GB min to 32GB standard
> to a few with 128GB. I was a bit surprised to find that QVector is
> essentially 32 bit limited. But, as you state, the way we might possibly
> use it is not within the use case for QVector.
>
> Thank you
> Mike Jackson
>
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