[Openmp-commits] [PATCH] Allow machine hierarchy expansion

[hfinkel at anl.gov]

In http://reviews.llvm.org/D9900#178569, @tlwilmar wrote:

> Oversubscription.  There's nothing to prevent the user from requesting an arbitrarily large number of threads.


But I thought that the machine hierarchy information represented the physical properties of the machine (cpus, cores, sockets, etc.). How does oversubscription factor into this? And how does that affect the number of levels?


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