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[webgpu] Use LazyRelease for prepack allocator #27077

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Merged
fs-eire merged 5 commits into from
Jan 24, 2026
Merged

[webgpu] Use LazyRelease for prepack allocator #27077

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823367d
[webgpu] Use LazyRelease for prepack allocator
qjia7 Jan 20, 2026
31c6fcb
Use specific prepack buffer manager
qjia7 Jan 21, 2026
0b0bc84
Revert "Use specific prepack buffer manager"
qjia7 Jan 21, 2026
6851509
flush after prepack
qjia7 Jan 21, 2026
5573064
Update onnxruntime/core/providers/webgpu/webgpu_kernel.cc
qjia7 Jan 22, 2026
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6 changes: 3 additions & 3 deletions onnxruntime/core/providers/webgpu/webgpu_context.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -138,10 +138,10 @@ void WebGpuContext::Initialize(const WebGpuContextConfig& config) {
config.buffer_cache_config.uniform.mode,
config.buffer_cache_config.query_resolve.mode);

// create initializer buffer manager. cache is always disabled for initializer buffer manager
// create initializer buffer manager.
initializer_buffer_mgr_ = BufferManagerFactory::Create(*this,
BufferCacheMode::Disabled,
BufferCacheMode::Disabled,
BufferCacheMode::LazyRelease,
BufferCacheMode::LazyRelease,
BufferCacheMode::Disabled);

// create program manager
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4 changes: 4 additions & 0 deletions onnxruntime/core/providers/webgpu/webgpu_kernel.cc
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Expand Up @@ -49,6 +49,10 @@ Status WebGpuKernel::PrePack(const Tensor& tensor, int input_idx, AllocatorPtr /

Status s = PrePackInternal(context, tensor, input_idx, ep_.PrepackAllocator(), is_packed);

// Flush pending commands to ensure GPU buffer creations are completed.
// This allows the initializer buffer manager to release temporary buffers and reduce memory usage.
webgpu_context_.Flush(webgpu_context_.InitializerBufferManager());
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if (webgpu_context_.ValidationMode() >= ValidationMode::Full) {
ORT_RETURN_IF_ERROR(webgpu_context_.PopErrorScope());
}
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