Author: Jay Urbanski
Date: 20:49:39 02/05/06
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On February 05, 2006 at 06:10:55, Vasik Rajlich wrote: >On February 04, 2006 at 12:19:33, dhanial wrote: > >>What is the best hash table settings for rybka for 10 to 15 min games and for 1 >>to 3 min games. > >For all time controls, as high as possible, provided that there is no swapping >to disk. > >Vas This is not actually true on all systems. For instance, if you have dual processor Opteron it would behoove you to keep the hash size to under half your physical memory at least, because Opteron systems are NUMA and access to memory attached to the non-local CPU is higher than latency to memory attached to the CPU your process is running on. It's about 60-80ns latency for local memory and about 100-120ns for 1-hop away.
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