Questions and postings pertaining to the development of ImageMagick, feature enhancements, and ImageMagick internals. ImageMagick source code and algorithms are discussed here. Usage questions which are too arcane for the normal user list should also be posted here.
magick: unable to extend pixel cache `Siker' @ fatal/cache.c/CacheSignalHandler/3182.
"Siker" simply means "success" in my native language and the "locale" settings of my Linux system is set to my native language. However I don't know how can that word is getting to that place.
Its likely you are writing the pixels to /tmp which is running out of space. Use another area on your disk that has plenty of free space (see temporary-path in the policy.xml file.