New NUMA Support with Windows Server 2008 R2 and Windows 7, Demo2

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The 64-bit versions of Windows 7 and Windows Server 2008 R2 support more than 64 Logical Processors (LP) on a single computer using Non-Uniform Memory Access (NUMA) hardware architectures. New commodity systems are now appearing that leverage NUMA chipset architectures. Many high-end server-class solutions may need to be architected with NUMA awareness in order to achieve linear performance scaling on such systems. Parallel Computing and High Performance Computing solution developers may also find NUMA awareness essential for performance scalability. This is a multi-part series illustrating concepts documented in detail at See the related sessions on Channel9 via



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The Discussion

  • User profile image
    What is the likelhood of a disk device being allocated other than on NUMA node 0 ?

    When the OS starts up (and or when hot added disk devices appear), the OS will creaste a disk device
    (ad device object instance of the drvobj)
    Are these likley to be spread across NUMA nodes ?

  • User profile image
    Answer - if the disk controler/HBA is on a bus connected to a particular NUMA node

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