On 07/04/2021 15:27, 'Bruce Allen' via sympy wrote:
Dear Oscar,
Thank you.
On the upside, this shows that sympy has a robust user base -- the bug
was picked up just 20 days ago and here I am stumbling on it
independently.
On the downside, this makes it hard to work on a calculation which
requires large numbers of CPU hours and needs to be checkpointed and
saved.
Do you know of any workarounds? Or is there an alternative to
pickle.save() and pickle.load() for this, which works well with sympy?
The only reason I am using pickle is because it is what popped up when
I googled 'save python data'.
I suppose I would just let it run, and use hibernate rather than
shutdown to switch off - then when you restart the machine the process
will continue where it left off. That certainly works well under Windows
(for calculations of any sort, partially watched videos, etc).
I have the feeling that adding extra steps like pickling is an
invitation for something to go wrong!
David
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