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Supporting Systems That Have More Than 64 Processors

Information for software developers about changes that some software requires to support more than 64 processors on the 64-bit versions of Windows 7.

File name: MoreThan64proc.docx

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The 64-bit versions of Windows 7 support more than 64 logical processors on a single machine. This paper provides information about the changes that some applications and drivers that run on Windows require to support this expanded number of processors.

Included in this white paper:

  • Terminology
  • Architectural Overview
  • Group Creation
  • Group, Process, and Thread Affinity
  • System Thread Pool
  • New and Changed Types and Macros
  • Application Modifications
  • Kernel-mode Driver Modifications



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