Charles-François Natali <[email protected]> added the comment:

> my computer has 122GB free RAM

122, or 1.22?

> Well, replace cPickle by pickle and it works.

cPickle makes some direct call to malloc()/realloc()/free(), contrarily to 
pickle which uses pymalloc. This could lead to heap fragmentation.

What does the following return ?
$ /usr/bin/time -v python test.py

----------
nosy: +neologix

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