[Pkg-octave-devel] Bug#779943: Bug#779943: octave: Enable large arrays: Build octave such that it can use arrays larger than 2 GB
John W. Eaton
jwe at octave.org
Fri Mar 6 17:07:39 UTC 2015
On 03/06/2015 10:57 AM, Fabrice Allibe wrote:
> Package: octave
> Version: 3.8.2-4
> Severity: wishlist
>
> Dear Maintainer,
>
> the size of a single Octave array cannot exceed 2 GB of memory because octave is not built with "--enable-64" flag
I'm not disputing that a version of Octave built with 64-bit indexing
enabled would be useful, but on a system with 64-bit pointers and 32-bit
indexing, the limit for any array is approximately 2^32 *elements* not
2GB of memory. The actual amount of memory allocated and used can be
larger than than 2GB. This is explained in the Octave manual pages that
you linked to:
> www.gnu.org/software/octave/doc/interpreter/Compiling-Octave-with-64_002dbit-Indexing.html
Also, there can be multiple arrays of up to this size.
jwe
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