Re: [Openexr-user] exrmaketiled error

[Florian Kainz]

Hi Martin,

exrmaketiled attempts to read the entire input image at once; the
program is not smart enough to process the image incrementally.

The highest-resolution level of a 20k by 20k 16-bit RGB image
requires about 2.4 GBytes of memory.  The lower-resolution levels
of a mip-mapped image consume another 0.8 GBytes.  To process a
20k by 2k image with exrmaketiled you'll need a computer with
at least 3.5 GBytes of RAM, and you'll probably have to build
the program in in 64-bit mode.

Florian


Martin Breidt wrote:
> Hello again!
>
> While trying to convert a 20k * 20k EXR into a tiled one:
>
>    exrmaketiled.exe -m -v test.exr test_tiled.exr
>
> I get this error message on Windows:
>
>   reading file test.exr
>   bad allocation
>
> Same when using the -r or -o option.
>
> Seems as if the file is too big for exrmaketiled?
>
> Does anyone know some alternative software I could use to produce a 
> tiled EXR?
>
> Thanks!
> Martin
>
>
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