Counting processors

[Pauldoo]

Hi,
Is a way in python to obtain the total number of processors present in
the system?

os.platform doesn't seem to contain anything useful.

 

[wittempj]

I don't think there is direct method. On Linux you can inspect file
/proc/cpuinfo to determine the installed cpus.

 

[Benji York]

Is a way in python to obtain the total number of processors present in
the system?

I don't know of a platform independent way. If you specify one or more
platforms, I'm sure someone will be able to help.

 

[Pauldoo]

Yeh well I know of /proc/cpuinfo (due to linux's hacked up non-unix
/proc, *grumble*) and the NUMBER_OF_PROCESSORS environment variable on
windows. I was just hoping for a slightly more platform independant
way of doing it.

 

[Alan Kennedy]

[Pauldoo]

Is a way in python to obtain the total number of processors present in
the system?

On windows,

List Processor Information.
Description: Returns information about the processors installed on a
computer.

http://www.microsoft.com/technet/scriptcenter/scripts/Python/hardware/basic/hwbapy01.mspx

 

[k pur]

You can use

print os.sysconf("SC_NPROCESSORS_CONF")

works on Linux


krishan

 

[MrJean1]

Or maybe

os.sysconf('SC_NPROCESSORS_ONLN')

Usually, the value returned by os.sysconf('SC_NPROCESSORS_ONLN') and
os.sysconf('SC_NPROCESSORS_CONF') are the same, but if they do differ,
os.sysconf('SC_NPROCESSORS_ONLN') is the reliably figure.


/Jean Brouwers

PS) This applies to Linux and Solaris, at least.

 

[Mike Meyer]

You can use

print os.sysconf("SC_NPROCESSORS_CONF")

works on Linux

Works on FreeBSD as well. It hooks up to the sysconf C call. That's a
Posix call, so this should work portably across Posix systems. I know
Windows can be made Posix compliant, but I'm no sure how much of that
functionality you get out of the box.

<mike