GetNumaNodeCount

Function Declaration


ULONG GetNumaNodeCount();

Parameters

This function does not take any parameters.

Return Value

Type	Description
`ULONG`	The number of NUMA nodes in the system. If the system does not support NUMA, this function returns 1.

Remarks

Note: NUMA (Non-Uniform Memory Access) is a computer memory design used in parallel computing in which memory access time depends on the memory location relative to the processor. In a NUMA system, processors have faster access to some memory locations than others. This is in contrast to Uniform Memory Access (UMA), where all processors have the same memory access time.

This function is part of the System Information API group.
It allows applications to query the system's NUMA topology to optimize memory allocation and thread scheduling for performance.
If the system is not NUMA-aware, the function will return 1, indicating a single logical NUMA node.

Requirements


Header	`winuser.h` (include `windows.h`)
Library	`User32.lib`
DLL	`User32.dll`
Minimum supported client	Windows Vista
Minimum supported server	Windows Server 2008

Function Declaration

Parameters

Return Value

Remarks

Requirements

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