Date: Thu, 19 May 2005 14:31:08 -0400 From: Jung-uk Kim <jkim@niksun.com> To: freebsd-arch@freebsd.org Cc: freebsd-amd64@freebsd.org Subject: AMD64 NUMA-awareness? Message-ID: <200505191431.08189.jkim@niksun.com>
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ULE scheduler paper (http://www.usenix.org/publications/library/proceedings/bsdcon03/tech/roberson.html) says: 'SMT introduces a concept of non-uniform processors into ULE which could be extended to support NUMA. The concept of expressing the penalty for migration through the use of separate queues could be further developed to include a local and global load-balancing policy. At the time of this writing, however, FreeBSD does not support any true NUMA capable machines and so this is left until such time that it does.' I am not sure about the meaning of 'true NUMA capable machines' but AMD64 is ccNUMA unless I am completely mistaken, and FreeBSD/amd64 is well-supported. Even multicore processors are available now and Intel is going to release dual-core processors with HTT to make matters worse. Is there anybody working on this? Thanks, Jung-uk Kim
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