Updates:
Summary: Memory problems with the cache
Status: Valid
Comment #3 on issue 3222 by asmeu...@gmail.com: Memory problems with the
cache
http://code.google.com/p/sympy/issues/detail?id=3222
Great. Like I said, you'll probably want to use judicious calls to
clear_cache() rather than just disabling it completely, as some parts of
SymPy can be quite slow without the cache.
I'm going to leave this issue open. There are two issues with the cache
here. One is that it keeps references to objects alive, even if there are
no other references. We could solve this by using weakrefs.
The second is that the size of the cache grows without bound. We should
consider putting a cap on the cache size, and performing some kind of
cleanup if it gets too large.
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