On Fri, Aug 19, 2011 at 7:10 PM, Adam Litke <agl@us.ibm.com> wrote:
On 08/19/2011 01:35 AM, Bharata B Rao wrote:
... <topology sockets='1' cores='2' threads='1' nodeid='0' cpus='0-1' mem='size'> <topology sockets='1' cores='2' threads='1' nodeid='1' cpus='2-3' mem='size'> ...
I like the idea of merging this into <topology> to prevent errors with specifying incompatible cpu and numa topologies but I think you can go a step further (assuming my following assertion is valid). Since cpus are assigned to numa nodes at the core level, and you are providing a 'nodeid' attribute, you can infer the 'cpus' attribute using 'cores' and 'nodeid' alone.
For your example above: <topology sockets='1' cores='2' threads='1' nodeid='0' mem='size'> <topology sockets='1' cores='2' threads='1' nodeid='1' mem='size'>
You have 4 cores total, each node is assigned 2. Assign cores to nodes starting with core 0 and node 0.
Sounds good. Unless anyone or any architecture has specific requirements of enumerating CPUs differently across nodes, 'cpus=' is redundant as you observe. Regards, Bharata.