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New Extensions
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79 lines
2.3 KiB
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79 lines
2.3 KiB
Plaintext
include::{generated}/meta/VK_NV_cooperative_matrix.txt[]
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*Last Modified Data*::
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2019-02-05
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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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This extension adds support for using cooperative matrix types in SPIR-V.
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Cooperative matrix types are medium-sized matrices that are primarily
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supported in compute shaders, where the storage for the matrix is spread
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across all invocations in some scope (usually a subgroup) and those
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invocations cooperate to efficiently perform matrix multiplies.
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Cooperative matrix types are defined by the
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{spirv}/NV/SPV_NV_cooperative_matrix.html[`SPV_NV_cooperative_matrix`]
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SPIR-V extension and can be used with the
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https://github.com/KhronosGroup/GLSL/blob/master/extensions/nv/GLSL_NV_cooperative_matrix.txt[`GL_NV_cooperative_matrix`]
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GLSL extension.
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This extension includes support for enumerating the matrix types and
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dimensions that are supported by the implementation.
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=== New Object Types
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None.
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=== New Enum Constants
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* Extending elink:VkStructureType:
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** ename:VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_COOPERATIVE_MATRIX_FEATURES_NV
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** ename:VK_STRUCTURE_TYPE_COOPERATIVE_MATRIX_PROPERTIES_NV
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** ename:VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_COOPERATIVE_MATRIX_PROPERTIES_NV
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=== New Enums
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* elink:VkScopeNV
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* elink:VkComponentTypeNV
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=== New Structures
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* Extending slink:VkPhysicalDeviceFeatures2:
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** slink:VkPhysicalDeviceCooperativeMatrixFeaturesNV
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* Extending slink:VkPhysicalDeviceProperties2:
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** slink:VkPhysicalDeviceCooperativeMatrixPropertiesNV
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* slink:VkCooperativeMatrixPropertiesNV
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=== New Functions
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* flink:vkGetPhysicalDeviceCooperativeMatrixPropertiesNV
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=== New SPIR-V Capabilities
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* <<spirvenv-capabilities-table-cooperativeMatrix,CooperativeMatrixNV>>
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=== Issues
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(1) What matrix properties will be supported in practice?
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RESOLVED: In NVIDIA's initial implementation, we will support:
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* AType = BType = fp16 CType = DType = fp16 MxNxK = 16x8x16 scope =
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Subgroup
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* AType = BType = fp16 CType = DType = fp16 MxNxK = 16x8x8 scope =
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Subgroup
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* AType = BType = fp16 CType = DType = fp32 MxNxK = 16x8x16 scope =
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Subgroup
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* AType = BType = fp16 CType = DType = fp32 MxNxK = 16x8x8 scope =
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Subgroup
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=== Version History
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* Revision 1, 2019-02-05 (Jeff Bolz)
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- Internal revisions
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