only use thread binding with blas backend #1797
Merged
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Apparently binding threads to a windows processor group is a bad idea if lc0 is used simultaneously with SF for analysis: both engines try to use the same cores.
Since thread binding is only useful for more than 32 threads, in most cases it may be better to let windows handle the allocation.
The only real use case is with the blas backend, so here thread binding is made conditional on
USE_BLAS
. This does not include the eigen backend, but I think this is acceptable as it is mainly intended as a reference implementation.