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--bind=balanced distributes threads across cores in a balanced way, not across sockets. From what I can see from the bitmasks - all is correct. This is not a bug.
We need a distribution mode that allows pus to be assigned across numa-domains in a balanced or scattered way. It is not clear to me that the balanced/scatter modes are of any use in their current form. Can we simply redefine them or should we create new modes that give the distribution I would like?
on a dual socket node with 18 cores per socket and 2 hyperthreads, there are 72 threads
should give a pu mask
but it actually gives
and in fact
should give the same pu mask, but with a different thread numbering for each pu (0213 or 0123 depending on your choice).
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