# CoreCountARM(3) Manual Page

## Name

CoreCountARM - Number of cores on the device

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## Description

`CoreCountARM`

  Decorating a variable with the `CoreCountARM` built-in decoration will make that variable contain the number of cores on the device.

Valid Usage

- VUID-CoreCountARM-CoreCountARM-07595
  The variable decorated with `CoreCountARM` must be declared using the `Input` `Storage` `Class`

- VUID-CoreCountARM-CoreCountARM-07596
  The variable decorated with `CoreCountARM` must be declared as a scalar 32-bit integer value

## See Also

No cross-references are available

## Document Notes

For more information, see the Vulkan Specification

This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.

## Copyright

Copyright 2014-2025 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0