Re: [Xen-devel] Hwloc with Xen host topology

[Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>]

Hello,

Andrew Cooper, le Thu 02 Jan 2014 20:26:49 +0000, a écrit :
> Cores are numbered per-socket in Xen, while sockets,
> numa nodes and cpus are numbered on an absolute scale.  There is
> currently a gross hack in my hwloc code which adds (socket_id *
> cores_per_socket * threads_per_core) onto each core id to make them
> similarly numbered on an absolute scale.  This is fine for a homogeneous
> system, but not for a hetrogeneous system.

BTW, hwloc does not need these physical ids to be unique, it can cope
with duplication and whatnot.  That said, having a coherent interface at
the Xen layer would be a good thing, indeed :)

Samuel

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