feat(custom_op): use dynamic process number

CHANGELOG.md

@@ -15,6 +15,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- Use dynamic process number in CPU kernels by [@JieRen98](https://github.com/JieRen98) in [#42](https://github.com/metaopt/TorchOpt/pull/42).
 - Read the Docs integration by [@Benjamin-eecs](https://github.com/Benjamin-eecs) and [@XuehaiPan](https://github.com/XuehaiPan) in [#34](https://github.com/metaopt/TorchOpt/pull/34).
 - Update documentation and code styles by [@Benjamin-eecs](https://github.com/Benjamin-eecs) and [@XuehaiPan](https://github.com/XuehaiPan) in [#22](https://github.com/metaopt/TorchOpt/pull/22).
 - Update tutorial notebooks by [@XuehaiPan](https://github.com/XuehaiPan) in [#27](https://github.com/metaopt/TorchOpt/pull/27).