Very large file conversion

[hmedia]

Hi.

I need to do some large image scaling, for example from 4096 x 4096 px up to 131072 x 131072 px using cubic interpolation. My question is whether ImageMagick works with mmaped files or something, thus not requiring the files to be loaded completely into memory first?

[magick]

See http://www.imagemagick.org/script/architecture.php. ImageMagick can cache pixels to disk rather than memory for large images. Use -limit area 1mb, for example, to force image pixels to disk for anything but the smallest images.