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[NNNN] Wave Matrix saturating accumulation #67

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alan-baker opened this issue Jul 13, 2023 · 0 comments
Open

[NNNN] Wave Matrix saturating accumulation #67

alan-baker opened this issue Jul 13, 2023 · 0 comments
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@tex3d @llvm-beanz @pow2clk
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active proposal Issues relating to active proposals
Milestone
Shader Model Backlog

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@alan-baker
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Which proposal does this relate to?
#61 - WaveMatrix

Describe the issue or outstanding question.
Is it possible to have a saturating accumulation version of MultiplyAccumulate? SPV_KHR_cooperative_matrix has such functionality. Support differs per geometry (similar to the K value) in Vulkan and must be queried in the API. SPIR-V makes it an undefined value if the intermediate matmul overflows prior to the accumulation.

Additional context
It would be awesome if dot4add_u8packed and dot4add_i8packed also had saturating variants.
@alan-baker alan-baker added the active proposal Issues relating to active proposals label Jul 13, 2023
@llvm-beanz llvm-beanz added this to the Shader Model 6.8 milestone Jul 13, 2023
@pow2clk pow2clk removed this from the Shader Model 6.8 milestone Nov 6, 2023
@damyanp damyanp changed the title [SM68] Wave Matrix saturating accumulation [NNNN] Wave Matrix saturating accumulation Aug 8, 2024
@damyanp damyanp modified the milestones: Dormant, Shader Model Backlog Aug 8, 2024
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@tex3d tex3d

@llvm-beanz llvm-beanz

@pow2clk pow2clk

Labels
active proposal Issues relating to active proposals
Projects
HLSL Triage
Status: Triaged
Milestone
Shader Model Backlog
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@tex3d @damyanp @llvm-beanz @alan-baker @pow2clk