multipage tiff split: libgomp: Thread creation failed ...

[macias]

I try to convert multipage tiff file into single files. No problem with relatively small source file, but when the file is getting bigger convert fails with the message:

libgomp: Thread creation failed: Resource temporarily unavailable

Tiff file is ok, I can read it using Gimp and extract single pages one by one. And here is also maybe my wish to this bug. From what I see I understand IM/convert creates a lot of temporary files, around 70MB per file (single "frame", "page"), and then tries to "convert" them. Such approach will eventually kill every computer -- if possible please convert each frame within tiff one by one. This allows manipulation in memory (70MB is ok for every computer) and faster execution.

ImageMagick-6.5.2-7
libgomp44-4.4.0_20090508-2.1

[magick]

You can convert one frame at a time yourself. For example:

• convert 'image.tif[15]' image-15.jpg

Set MAGICK_THREAD_LIMIT to 1 to reduce the number of threads ImageMagick consumes or build ImageMagick with --disable-openmp to disable threading completely.

[macias]

Thank you very much for the information. The only solution for me is splitting one by one, because with env. variable set to = 1 or with rebuild of IM, I still encounter problem with computer resources:
* computer is nearly frozen
* a lot of temporary files are created

At the end convert was killed (by kernel I assume). This happened also when threads were active (with previous, default, settings).

[magick]

Add '-limit area 1' to your command line as the first option. Its possible the TIFF delegate library is consuming loads of memory. It depends on the characteristics of your TIFF image.