Socket core level; System ID; Cores in partitions

[Nidhi Ram]

Is there a programmatic way to determine the processor core-level? For instance, I would like to be able to detect the difference between single-core processors and dual-core processors.
Also, is there a way to retrieve the system ID for a given machine? I am looking for an identifier that will remain constant across all of the virtual partitions of 1 machine.
Finally, is it true that 2 cores of 1 processor can be assigned to different virtual partitions?

[IT_2007]

you can find system serial number following command:

echo "sel path 'system' ; info; wait infolog" |cstm|grep -i "system serial number"

This link would be helpful to understand about dual-core CPUs
http://docs.hp.com/en/5991-6605/apbs05.html