Acceleration of Radiance for Lighting Simulation by using Parallel Computing with OpenCL
Publication Type
Conference Paper
Date Published
11/2011
Authors
Abstract
This study attempted to accelerate annual daylighting simulations for fenestration systems in Radiance ray-tracing program. The algorithm was optimized to reduce both the redundant data input/output operations and floating-point operations. To further accelerate the simulation speed, calculation for matrices multiplications was implemented in parallel on a graphics processing unit using OpenCL, a cross-platform parallel programming language. Numerical experiments show that combination of above measures can speed up the annual daylighting simulations 101.7 times or 28.6 times when sky vector has 146 or 2306 elements, respectively.
Journal
12th International Conference of the International Building Performance Simulation Association (Building Simulation 2011)
Year of Publication
2011
Organization
Building Technologies Department, Building Technology and Urban Systems Division, Windows and Envelope Materials
Research Areas
Building Façade Solutions, Daylighting Systems, Daylighting Systems:Modeling Daylight, Windows and Daylighting, W and D: Low Energy Facades and Daylighting, BTUS Windows and Daylighting