ImportError: cannot import name 'NumberField' from partially initialized module 'sage.rings.number_field.number_field' (most likely due to a circular import) (/private/var/tmp/sage-9.5-current/local/var/lib/sage/venv-python3.9.9/lib/python3.9/site-packages/sage/rings/number_field/number_field.py) Process SpawnPoolWorker-3: On Wednesday, January 26, 2022 at 1:45:41 PM UTC Alan Stafford wrote:
> SageMath 9.1 works with the 9.5 version of ncpus.py so one can disregard > my tinkering with it. > > On Wednesday, January 26, 2022 at 10:12:33 AM UTC Alan Stafford wrote: > >> I am using Mac OS 12.1 Monterey. The notebook works on Sagemath 9.1 if I >> hack ncpus.py to return 4. >> >> On Tuesday, January 25, 2022 at 10:59:20 PM UTC John H Palmieri wrote: >> >>> 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.) >>> >>> >>> >>> On Tuesday, January 25, 2022 at 12:34:07 PM UTC-8 >>> alan_thoma...@yahoo.co.uk wrote: >>> >>>> Process SpawnPoolWorker-1: Traceback (most recent call last): File >>>> "/private/var/tmp/sage-9.5-current/local/var/lib/sage/venv-python3.9.9/lib/python3.9/multiprocessing/process.py", >>>> >>>> line 315, in _bootstrap self.run() File >>>> "/private/var/tmp/sage-9.5-current/local/var/lib/sage/venv-python3.9.9/lib/python3.9/multiprocessing/process.py", >>>> >>>> line 108, in run self._target(*self._args, **self._kwargs) File >>>> "/private/var/tmp/sage-9.5-current/local/var/lib/sage/venv-python3.9.9/lib/python3.9/multiprocessing/pool.py", >>>> >>>> line 114, in worker task = get() File >>>> "/private/var/tmp/sage-9.5-current/local/var/lib/sage/venv-python3.9.9/lib/python3.9/multiprocessing/queues.py", >>>> >>>> line 368, in get return _ForkingPickler.loads(res) File >>>> "/private/var/tmp/sage-9.5-current/local/var/lib/sage/venv-python3.9.9/lib/python3.9/site-packages/sage/manifolds/differentiable/chart.py", >>>> >>>> line 36, in <module> >>>> On Tuesday, January 25, 2022 at 8:13:20 PM UTC egourg...@gmail.com >>>> wrote: >>>> >>>>> Hi, >>>>> >>>>> Le mardi 25 janvier 2022 à 12:54:57 UTC+1, alan_thoma...@yahoo.co.uk >>>>> a écrit : >>>>> >>>>>> I get errors in this notebook if I set the variable tpar to any value >>>>>> greater than one. (Number of Tensor processing cores.) >>>>>> >>>>>> *http://alan.atstafford.co.uk/Sage9.5Problem.ipynb >>>>>> <http://alan.atstafford.co.uk/Sage9.5Problem.ipynb>* >>>>>> >>>>> >>>>> Your notebook works well with tpar=4 on my Ubuntu computer running >>>>> Sage 9.5.rc4. >>>>> What kind of error do you get? >>>>> >>>>> Eric. >>>>> >>>> -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/d0782dd6-41d5-48da-8b8b-e00bc356e9b6n%40googlegroups.com.
