PyBind11 Slow Performance
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- C++
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Description
Hi,
I have some c++ code that I want to call from Python, and I followed this guide. However, I was surprised to see the performance of PyBind11 to be slower than not only the CPython implementation but also the vanilla Python performance. (See image attached below for runtimes)
I guess I'm a bit confused, I don't really know if it's something on my side which is causing the PyBind11 to run very slowly, any guidance to point me in the right direction to finding the source of this would be helpful. I followed the guide step by step.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
The report provides only the Visual Studio C++/Python guide and an attached runtime image, with no repository file, test, or reproducible example. Start by reducing the comparison to a minimal PyBind11 benchmark and documenting the build and timing conditions; done means an isolated, reproducible cause or a clearly actionable report.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp, python
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 20/100