diff options
Diffstat (limited to 'Doc/library/multiprocessing.rst')
| -rw-r--r-- | Doc/library/multiprocessing.rst | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/Doc/library/multiprocessing.rst b/Doc/library/multiprocessing.rst index 2f0f1f8..d19f911 100644 --- a/Doc/library/multiprocessing.rst +++ b/Doc/library/multiprocessing.rst @@ -996,13 +996,13 @@ Miscellaneous This number is not equivalent to the number of CPUs the current process can use. The number of usable CPUs can be obtained with - ``len(os.sched_getaffinity(0))`` + :func:`os.process_cpu_count`. When the number of CPUs cannot be determined a :exc:`NotImplementedError` is raised. .. seealso:: - :func:`os.cpu_count` + :func:`os.cpu_count` and :func:`os.process_cpu_count` .. function:: current_process() @@ -2214,7 +2214,7 @@ with the :class:`Pool` class. callbacks and has a parallel map implementation. *processes* is the number of worker processes to use. If *processes* is - ``None`` then the number returned by :func:`os.cpu_count` is used. + ``None`` then the number returned by :func:`os.process_cpu_count` is used. If *initializer* is not ``None`` then each worker process will call ``initializer(*initargs)`` when it starts. @@ -2249,6 +2249,10 @@ with the :class:`Pool` class. .. versionadded:: 3.4 *context* + .. versionchanged:: 3.13 + *processes* uses :func:`os.process_cpu_count` by default, instead of + :func:`os.cpu_count`. + .. note:: Worker processes within a :class:`Pool` typically live for the complete @@ -2775,7 +2779,7 @@ worker threads rather than worker processes. :meth:`~multiprocessing.pool.Pool.terminate` manually. *processes* is the number of worker threads to use. If *processes* is - ``None`` then the number returned by :func:`os.cpu_count` is used. + ``None`` then the number returned by :func:`os.process_cpu_count` is used. If *initializer* is not ``None`` then each worker process will call ``initializer(*initargs)`` when it starts. |