Mandelbrot - Performance prompt for testing new code generator tool

prompt-mandelbrot-test.md

You are a senior Go engineer.

Implement a high-performance Go program that calculates the Mandelbrot set and renders it as a PNG image.

Requirements:

• Use pure Go standard library only.
• Support configurable image size, max iterations, and output filename via CLI flags.
• Parallelize computation using goroutines and worker pools.
• Optimize memory allocations and avoid unnecessary copying.
• Generate a grayscale PNG output.
• Add benchmarks for the core computation.
• Add unit tests for escape-time calculations.
• Organize code cleanly with:
  • cmd/
  • internal/
  • pkg/
• Include a README explaining:
  • architecture
  • concurrency model
  • optimization decisions
  • how to run benchmarks

Extra challenge:

• Add SIMD-like optimization ideas in comments.
• Compare static vs dynamic worker scheduling.
• Print total render time and pixels/sec.

The code should be production-quality and compile with: go build ./...

Then explain:

1. Time complexity
2. Memory behavior
3. Concurrency tradeoffs
4. Possible GPU offloading approaches