Software

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Penumbra

Key Features

Key capabilities include:
GPU-accelerated pixel counting

Uses graphics processing hardware to perform fast, accurate solar shading calculations based on pixel counting techniques.

High-performance solar analysis

Designed to deliver shading results efficiently enough for use in detailed, timestep-based energy simulation workflows.

Cross-platform CMake project

Configured as a portable CMake-based project, supporting common C++ compilers across Windows, macOS, and Linux.

Open-source and extensible

Distributed as open-source software, enabling inspection, extension, and integration into other modeling tools and research workflows.