how does onnxruntime kernel execute，when is to parallelize and when to serialize.

[jiawei-liang]

Describe the issue

how does onnxruntime kernel execute，when is to parallelize and when to serialize in device.
I want to know onnx kernel execute seq in onnxruntime，but I do not find the code to control this，is it always serialize？how does it run，please help me with this。

To reproduce

none

Urgency

No response

Platform

Linux

OS Version

18

ONNX Runtime Installation

Built from Source

ONNX Runtime Version or Commit ID

18

ONNX Runtime API

C++

Architecture

X64

Execution Provider

CUDA

Execution Provider Library Version

No response

[github-actions]

This issue has been automatically marked as stale due to inactivity and will be closed in 30 days if no further activity occurs. If further support is needed, please provide an update and/or more details.