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[New] Initial draft for memory and execution model #505

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This is the start of a proposal for the memory and execution model for HLSL.

@llvm-beanz
[New] Initial draft for memory and execution model
17082b3 
This is the start of a proposal for the memory and execution model for
HLSL.
spall
spall approved these changes Sep 30, 2025
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You use both warp and wave but don't provide a definition for warp. Not sure if it would be better to choose one term or the other.

spall
spall reviewed Sep 30, 2025
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proposals/NNNN-mem-and-exec-model.md
One problem with this model is not having clearly defined memory ordering which
can impact tangle formation. If a thread is allowed to execute the second `if`
body before all threads have finished evaluating the condition, tangle formation
becomes unintuitive.
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is this not just unintuitive but also undefined?

V-FEXrt
V-FEXrt approved these changes Oct 1, 2025
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This is a good description of our options! I'm curious on what your thought are towards picking one. Usually, these docs have an inherent preference, but this one is very matter-of-fact and seems to lack a preference

bogner
bogner approved these changes Oct 16, 2025
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This meets the bar for consideration of the proposal in tree. Please give it a number and update the document header to the newer format before merging.

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@spall spall spall approved these changes

@bogner bogner bogner approved these changes

@V-FEXrt V-FEXrt V-FEXrt approved these changes

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