Replicate network weights only to used NUMA nodes
On a system with multiple NUMA nodes, this patch avoids unneeded replicated
(e.g. 8x for a single threaded run), reducting memory use in that case.
Lazy initialization forced before search.
Passed STC:
https://tests.stockfishchess.org/tests/view/
66a28c524ff211be9d4ecdd4
LLR: 2.96 (-2.94,2.94) <-1.75,0.25>
Total: 691776 W: 179429 L: 179927 D: 332420
Ptnml(0-2): 2573, 79370, 182547, 78778, 2620
closes https://github.com/official-stockfish/Stockfish/pull/5515
No functional change