Contact
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Jeff Bolz jeffbolznv
Other Extension Metadata
- Last Modified Date
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2019-02-05
- Interactions and External Dependencies
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This extension requires
SPV_NV_cooperative_matrix -
This extension provides API support for
GL_NV_cooperative_matrix
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- Contributors
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Jeff Bolz, NVIDIA
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Markus Tavenrath, NVIDIA
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Daniel Koch, NVIDIA
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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_NV_cooperative_matrix
SPIR-V extension and can be used with the
GL_NV_cooperative_matrix
GLSL extension.
This extension includes support for enumerating the matrix types and dimensions that are supported by the implementation.
New Enum Constants
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VK_NV_COOPERATIVE_MATRIX_EXTENSION_NAME -
VK_NV_COOPERATIVE_MATRIX_SPEC_VERSION -
Extending VkStructureType:
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VK_STRUCTURE_TYPE_COOPERATIVE_MATRIX_PROPERTIES_NV -
VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_COOPERATIVE_MATRIX_FEATURES_NV -
VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_COOPERATIVE_MATRIX_PROPERTIES_NV
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Issues
(1) What matrix properties will be supported in practice?
RESOLVED: In NVIDIA’s initial implementation, we will support:
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AType = BType = fp16 CType = DType = fp16 MxNxK = 16x8x16 scope = Subgroup
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AType = BType = fp16 CType = DType = fp16 MxNxK = 16x8x8 scope = Subgroup
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AType = BType = fp16 CType = DType = fp32 MxNxK = 16x8x16 scope = Subgroup
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AType = BType = fp16 CType = DType = fp32 MxNxK = 16x8x8 scope = Subgroup
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.