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[ExecuTorch][WebGPU] Add fused SDPA (sdpa_with_kv_cache) with dynamic input_pos #20086

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[ExecuTorch][WebGPU] Add fused SDPA (sdpa_with_kv_cache) with dynamic input_pos #20086

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JulianCloudNTH Jun 6, 2026
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JulianCloudNTH Jun 9, 2026
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JulianCloudNTH Jun 9, 2026
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JulianCloudNTH Jun 9, 2026
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1 change: 1 addition & 0 deletions backends/webgpu/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,7 @@ set(WEBGPU_SRCS
runtime/ops/add/BinaryOp.cpp
runtime/ops/rms_norm/RmsNorm.cpp
runtime/ops/update_cache/UpdateCache.cpp
runtime/ops/sdpa/Sdpa.cpp
runtime/ops/select_as_symint/SelectAsSymint.cpp
)

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3 changes: 3 additions & 0 deletions backends/webgpu/runtime/WebGPUGraph.h
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Expand Up @@ -105,6 +105,9 @@ class WebGPUGraph {
int64_t get_int(int id) const {
return ints_[id];
}
bool get_bool(int id) const {
return bools_[id];
}

// Live-scalar (SymInt) API; mirrors the Vulkan SymInt/ParamsBuffer UBO.
// set_symint writes the buffer + marks dirty only if the value changed.
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