Tim Peters added the comment:
Just noting that the `multiprocessing` module can be used instead. In the
example, add
import multiprocessing as mp
and change
with concurrent.futures.ProcessPoolExecutor() as executor:
to
with mp.Pool() as executor:
That's all it takes. On my 4-core Win10 box (8 logical cores), that continued
to work fine even when passing 1024 to mp.Pool() (although it obviously burned
time and RAM to create over a thousand processes).
Some quick Googling strongly suggests there's no reasonably general way to
overcome the Windows-defined MAXIMUM_WAIT_OBJECTS=64 for implementations that
call the Windows WaitForMultipleObjects().
----------
nosy: +tim.peters
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<http://bugs.python.org/issue26903>
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