scheduler: note in README thoughts on NUMA affinities
scheduler: note in README thoughts on NUMA affinities

NUMA is a complex complex topic.  It is non-trivial to write userpace
code that has NUMA awareness and gets deterministically better performance
than just doing nothing, when run on arbitrary hardware.  The latter point
there being what you get in an abstracted general purpose compute cloud.

For some basic interesting use cases, we have an idea of how to do
something useful, without forcing the poor app writers to code to specific
knowledge of compute node internal topologies.

Signed-off-by: Tim Pepper <8dbd764830e941d092a1cb7fa16423169acc0b04@linux.intel.com>

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