# VK_KHR_cooperative_matrix(3) Manual Page

## Name

VK_KHR_cooperative_matrix - device extension

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## Registered Extension Number

507

## Revision

2

## Ratification Status

Ratified

## Extension and Version Dependencies

VK_KHR_get_physical_device_properties2
or
Vulkan Version 1.1

## SPIR-V Dependencies

- SPV_KHR_cooperative_matrix

## Contact

- Kevin Petit [GitHub]kpet

## Extension Proposal

VK_KHR_cooperative_matrix

## Other Extension Metadata

Last Modified Date

  2023-05-03

Interactions and External Dependencies

  - This extension provides API support for `GLSL_KHR_cooperative_matrix`

Contributors

  - Jeff Bolz, NVIDIA

  - Markus Tavenrath, NVIDIA

  - Daniel Koch, NVIDIA

  - Kevin Petit, Arm Ltd.

  - Boris Zanin, AMD

## Description

This extension adds support for using cooperative matrix types in SPIR-V. Cooperative matrix types are medium-sized matrices that are primarily supported in compute shaders, where the storage for the matrix is spread across all invocations in some scope (usually a subgroup) and those invocations cooperate to efficiently perform matrix multiplies.

Cooperative matrix types are defined by the `SPV_KHR_cooperative_matrix` SPIR-V extension and can be used with the `GLSL_KHR_cooperative_matrix` GLSL extension.

This extension includes support for enumerating the matrix types and dimensions that are supported by the implementation.

## New Commands

- vkGetPhysicalDeviceCooperativeMatrixPropertiesKHR

## New Structures

- VkCooperativeMatrixPropertiesKHR

- Extending VkPhysicalDeviceFeatures2, VkDeviceCreateInfo:

  - VkPhysicalDeviceCooperativeMatrixFeaturesKHR

- Extending VkPhysicalDeviceProperties2:

  - VkPhysicalDeviceCooperativeMatrixPropertiesKHR

## New Enums

- VkComponentTypeKHR

- VkScopeKHR

## New Enum Constants

- `VK_KHR_COOPERATIVE_MATRIX_EXTENSION_NAME`

- `VK_KHR_COOPERATIVE_MATRIX_SPEC_VERSION`

- Extending VkStructureType:

  - `VK_STRUCTURE_TYPE_COOPERATIVE_MATRIX_PROPERTIES_KHR`

  - `VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_COOPERATIVE_MATRIX_FEATURES_KHR`

  - `VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_COOPERATIVE_MATRIX_PROPERTIES_KHR`

## New SPIR-V Capabilities

- CooperativeMatrixKHR

## Issues

## Version History

- Revision 2, 2023-05-03 (Kevin Petit)

  - First KHR revision

- Revision 1, 2019-02-05 (Jeff Bolz)

  - NVIDIA vendor extension

## See Also

No cross-references are available

## Document Notes

For more information, see the Vulkan Specification

This page is a generated document. Fixes and changes should be made to the generator scripts, not directly.

## Copyright

Copyright 2014-2024 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0