How to tell if a motherboard is UMA or NUMA?

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http://serverfault.com – I want to build a very parallel (at least 24 cores) AMD opteron (bulldozer) system. I'm looking at some motherboards and I can't figure out if they're UMA or NUMA (uniform memory access vs non-uniform memory access.) Are most multi-socket motherboards one or the other architecture? Here are two I was looking at: Quad socket Tyan: http://www.newegg.com/Product/Product.aspx?Item=N82E16813151219 Dual socket Asus: http://www.newegg.com/Product/Product.aspx?Item=N82E16813131643&Tpk=KGPR... (HowTos)