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" <imikejack...@gmail.com> wrote:
> > On Sep 3, 2013, at 10:23 AM, André Somers <an...@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) > >> > >> _______________________________________________ > >> Interest mailing list > >> Interest@qt-project.org > >> http://lists.qt-project.org/mailman/listinfo/interest > > > > 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 > > _______________________________________________ > Interest mailing list > Interest@qt-project.org > http://lists.qt-project.org/mailman/listinfo/interest >
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