feat(cambricon): enable TaskTopo graph capture - #1434
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Avoid queue synchronization while CNRT is capturing, while preserving the synchronous eager-execution contract outside capture. Record descriptor-owned metadata with cnrtMemcpyAsync_V2 and pass temporary elementwise input pointers as kernel arguments so captured graphs can safely reuse frozen workspaces across batch shapes. Initialize the Cambricon runtime and freeze cached allocations when they become visible to captured graphs so memory trimming cannot invalidate recorded pointers.
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Avoid queue synchronization while CNRT is capturing, while preserving the synchronous eager-execution contract outside capture.
Record descriptor-owned metadata with cnrtMemcpyAsync_V2 and pass temporary elementwise input pointers as kernel arguments so captured graphs can safely reuse frozen workspaces across batch shapes.
Initialize the Cambricon runtime and freeze cached allocations when they become visible to captured graphs so memory trimming cannot invalidate recorded pointers.