cuda-c-optimization

Optimize CUDA C kernels for performance, stability, and debugging.

258|48|Updated Jun 22, 2020
One-click install
npx skills add https://github.com/mindspore-ai/akg --skill cuda-c-optimization-mindspore-ai
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: cuda-c-optimization
Source: https://github.com/mindspore-ai/akg/tree/main/akg_agents/python/akg_agents/op/resources/skills/cuda-c/guides/cuda-c-optimization
Command: npx skills add https://github.com/mindspore-ai/akg --skill cuda-c-optimization-mindspore-ai

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

CUDA C 性能优化、数值稳定性和调试排查,帮助开发者提升内核性能和健壮性。

Core Features & Use Cases

  • Performance strategies: optimal block sizes, memory access patterns, and occupancy tuning for common kernels like Element-wise, Reduce, MatMul, and image processing.
  • Numerical stability: techniques for softmax stabilization, safe division and sqrt, and precision-aware accumulation.
  • Debugging & best practices: checks, error handling, and robust kernel design to simplify maintenance and debugging.
  • Use Case: You have a CUDA kernel with heavy arithmetic; apply the guidelines to reduce latency and improve stability across workloads.

Quick Start

Provide a minimal CUDA C kernel and apply the optimization guidelines to achieve better performance and stability.

Frequently Asked Questions about cuda-c-optimization

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

FAQPage Schema
How do I optimize CUDA C kernel performance for matrix multiplication and element-wise operations?

Optimize CUDA C kernel performance by tuning block sizes, memory access patterns, and occupancy for matrix multiplication and element-wise operations. Applying these strategies reduces latency and improves stability across common workloads.

Why does my CUDA kernel have numerical instability during softmax and division operations?

CUDA kernel numerical instability during softmax and division arises from unsafe arithmetic. Implement softmax stabilization, safe division, sqrt checks, and precision-aware accumulation to ensure robust numerical results.

What is the best way to reduce branch divergence in CUDA C kernels?

Reducing branch divergence in CUDA C kernels involves applying robust design guidelines that minimize conditional branching. This approach improves execution efficiency and simplifies subsequent maintenance and debugging.

Does this approach work for debugging memory access patterns in image processing kernels?

Yes, this approach works for debugging memory access patterns in image processing kernels by applying boundary checks, error handling, and robust kernel design guidelines to simplify maintenance and improve stability.

How to handle boundary checks and safe arithmetic in CUDA C reduction kernels?

Handle boundary checks and safe arithmetic in CUDA C reduction kernels by following guidelines for correct boundary validation, safe division, and precision-aware accumulation to prevent errors and ensure numerical stability.