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Subject: Re: [hwloc-devel] CPU affinity of OS Devices?
From: Guy Streeter (streeter_at_[hidden])
Date: 2012-11-06 17:55:58


On 11/06/2012 03:53 PM, Brice Goglin wrote:
> Hello Guy,
>
> I don't think OS devices ever had a cpuset. All objects that are not
> things where you can bind processes usually have NULL cpusets. So when
> you have a PCI or OS device, you walk up the obj->parent pointer until
> you find an object with a non-NULL cpuset. That's the affinity you're
> looking for.
>
> You can use hwloc_get_non_io_ancestor_obj() (in hwloc/helper.h) to find
> the first parent with non-NULL cpuset.
>
> Brice
>

I didn't mean to imply that they had gone away. My question is how do I
specify a binding like "not on the same CPU that is handling the Ethernet
interrupts"?

thanks,
--Guy