Comment #7 on issue 3222 by asmeu...@gmail.com: Memory problems with the
cache
http://code.google.com/p/sympy/issues/detail?id=3222
I completely agree. There was some discussion on the mailing list about
this issue a month or two ago. The idea is to make the cache more local, so
that it does its job for individual computations, but is cleared in
between. Unfortunately, Tom, the person who was discussing it, was not
accepted for GSoC (he was accepted by another organization), so this may
not be fixed anytime soon. You can read his GSoC proposal
https://github.com/sympy/sympy/wiki/GSOC-2013-Application-Tom-Bachmann:-Removing-the-old-assumptions-module
to see what the ideas were.
Of course, a much more tractable solution for right now would be to
automatically clear the cache when it reaches a certain size. Do you know
how to efficiently and accurately check how much memory is used by a Python
object?
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