cpu_cores is small python library and utility to get the number of "physical" cpu cores (without hyperthreading logical cores) of a linux/osx box.
On Linux, this is not an easy task because of hyperthreaded logical cores included in /proc/cpuinfo. Please, read carefully this excellent post to understand why.
- support Linux (well tested) and OSX (needs some extra tests files), easy to extend to support other OS
- unit tests (> 90% coverage)
- python2 and python3 support
- no dependencies
cpu_cores is at an early stage of development (API can change).
If you have exotic Linux or OSX boxes with plenty of cpu cores, please provides the output of :
# For Linux
cat /proc/cpuinfo
or
# For OSX
/usr/sbin/system_profiler -detailLevel full SPHardwareDataType
pip install cpu_cores
Requirements:
- Python 2.6, 2.7, 3.2 or 3.3
#!/usr/bin/env python
# Import
from cpu_cores import CPUCoresCounter
# We build an instance for the current operating system
instance = CPUCoresCounter.factory()
# Get the number of total real cpu cores
print instance.get_physical_cores_count()
# Get the number of total physical processors
print instance.get_physical_processors_count()
prompt$ get_cpu_physical_cores.py
Number of real physical processors : 1
Number of real physical cores : 2
prompt$ get_cpu_physical_cores.py --single-value=cores
2
prompt$ get_cpu_physical_cores.py --single-value=processors
1