Adding :
import multiprocessing as mp
if mp.get_start_method != 'fork' : mp.set_start_method('fork')
Lets one rerun the notebook without restarting the kernel.
One can delete the line:
os.environ['SAGE_NUM_THREADS'] = '4'
On Thursday, January 27, 2022 at 5:59:36 PM UTC Alan Stafford wrote:
> That works. I get all cores used.
> On Thursday, January 27, 2022 at 1:20:26 PM UTC [email protected] wrote:
>
>> Le mardi 25 janvier 2022 à 23:59:20 UTC+1, John H Palmieri a écrit :
>>
>>> Are you using OS X? Could this possibly be due to how Python handles
>>> multiprocessing on OS X vs. other platforms? (See
>>>
>>> https://docs.python.org/3/library/multiprocessing.html#contexts-and-start-methods,
>>>
>>> in particular the comment "On macOS, the *spawn* start method is now
>>> the default" and https://bugs.python.org/issue33725.)
>>>
>>>
>> Thank you John for pointing this!
>>
>> Alan, could you try to run your notebook after having added the following
>> lines at the top of it?
>>
>> import multiprocessing as mp
>> mp.set_start_method('fork')
>>
>> Eric.
>>
>
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