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Update docs/standard-library/execution.md
Co-authored-by: Casey Carter <cartec69@gmail.com>
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docs/standard-library/execution.md

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@@ -37,7 +37,7 @@ Parallel algorithms execute on an unspecified number of threads and divide the w
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Specifying `parallel_policy` or `parallel_unsequenced_policy` causes standard library algorithms to run in parallel using the Windows Thread Pool. For more information, see [Thread Pools](/windows/win32/procthread/thread-pools). The number of concurrent threads, and thus the number of "chunks" for data partitioning, is limited to the thread pool default (currently 500).
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Before Windows 11 and Windows Server 2022, applications were limited by default to a single processor group which has 64 logical processors. This limited the number of concurrently executing threads to 64. For more information, see [Processor Groups](/windows/win32/procthread/processor-groups).
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Before Windows 11 and Windows Server 2022, applications were limited by default to a single processor group having at most 64 logical processors. This limited the number of concurrently executing threads to 64. For more information, see [Processor Groups](/windows/win32/procthread/processor-groups).
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Starting with Windows 11 and Windows Server 2022, processes and their threads have processor affinities that by default span all processors in the system, and across multiple groups on machines with more than 64 processors. The limit on the number of concurrent threads is now the total number of logical processors in the system.
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