I just wonder if anyone knows what state the linux NUMA implementation is at. I looked on some linux numa sites but it seems very dated (many 2001 and 2004 the latest). I had a discussion with a friend about how good numa is on linux and his opinion is that we should run x86 Solaris on all opterons or replace the 4way with UP system since numa is so immature under linux. Anyone who has some facts in this area ? /ps