numpy-interop

Implement DLPack and buffer protocols for data exchange between numerical libraries.

Updated Aug 23, 2026
One-click install
npx skills add https://github.com/cuba6112/skillfactory --skill numpy-interop
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: numpy-interop
Source: https://github.com/cuba6112/skillfactory/tree/main/skills/numpy-interop
Command: npx skills add https://github.com/cuba6112/skillfactory --skill numpy-interop

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill enables efficient data sharing between different numerical and tensor libraries (like NumPy, PyTorch, TensorFlow) by leveraging standardized protocols, avoiding costly data copying.

Core Features & Use Cases

  • Cross-Library Data Exchange: Facilitates seamless transfer of data between Python libraries without redundant memory allocation.
  • Custom Array Behavior: Allows custom array-like objects to integrate with NumPy's universal functions (ufuncs).
  • Low-Level Memory Access: Provides access to raw memory pointers for interfacing with C/C++ extensions.
  • Use Case: Transferring a large tensor from a GPU-accelerated PyTorch model to NumPy for CPU-based analysis without copying the entire tensor's data.

Quick Start

Use the numpy-interop skill to convert a PyTorch tensor to a NumPy array.

Frequently Asked Questions about numpy-interop

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I share data between NumPy and PyTorch without copying memory?

You can share data between NumPy and PyTorch without copying memory by using the DLPack standard and buffer protocol. This enables seamless tensor sharing by passing raw memory pointers directly between libraries.

What is the __array_ufunc__ protocol used for in NumPy?

The __array_ufunc__ protocol allows custom array-like objects to integrate with NumPy's universal functions. It enables custom array behavior by overriding how these functions operate on non-NumPy data structures.

How do I convert a GPU PyTorch tensor to a NumPy array for CPU analysis?

To convert a GPU PyTorch tensor to a NumPy array for CPU analysis, you can use standardized data exchange protocols like DLPack. This facilitates cross-library data transfer without redundant memory allocation.

Can custom array-like objects integrate with NumPy universal functions?

Yes, custom array-like objects can integrate with NumPy universal functions by implementing the __array_ufunc__ protocol. This allows custom object compatibility and seamless interaction with NumPy's internal function overriding mechanisms.

What is the best way to access raw memory pointers for C extensions in Python?

The best way to access raw memory pointers for C extensions is by utilizing low-level buffer interfaces. This provides direct memory access for interfacing with C or C++ extensions while avoiding costly data copying.

Does DLPack support efficient tensor sharing across different numerical libraries?

Yes, DLPack supports efficient tensor sharing across different numerical libraries. It provides a standardized protocol for data exchange, allowing interoperability between systems like NumPy and PyTorch without redundant memory allocation.