On 10/6/07, Lawrence Oluyede <[EMAIL PROTECTED]> wrote:
> John <[EMAIL PROTECTED]> wrote:
> > Is there a way to find the number of processors on a machine (on linux/
> > windows/macos/cygwin) using python code (using the same code/cross
> > platform code)?
>
> >From processing <http://cheeseshop.python.org/pypi/processing/0.34> :
A few reiterated notes inline, from my previous message.
> def cpuCount():
> '''
> Returns the number of CPUs in the system
> '''
> if sys.platform == 'win32':
> try:
> num = int(os.environ['NUMBER_OF_PROCESSORS'])
The user can do bad things to this environment variable, but it's
probably ok most of the time. (Hey, they change it, they pay the
consequences).
> else:
> try:
> num = os.sysconf('SC_NPROCESSORS_ONLN')
This is really bad on linux. You really want to parse /proc/cpuinfo
because HT 'cpus' are almost useless, and can be bad in situations
where you try to treat them as general purpose cpus.
--
Nick
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