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A dynamic load balancing algorithm for sort-first rendering clusters

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3 Author(s)
Chang Hui ; Sch. of Autom. Sci. & Electr. Eng., Beihang Univ., Beijing, China ; Lei Xiaoyong ; Dai Shuling

Load balancing determines the performance and scalability of sort-first rendering clusters. A dynamic load balancing algorithm based on deferred shading is presented. The proposed algorithm is based on the 2-pass rendering character of deferred shading to predict the rendering load distribution among the screen space. Utilizing fragment shaderings and alpha blending in GPU, the proposed algorithm can achieve per-pixel load distribution as a gray image in real-time. The paper also presented the screen space division strategy and the optimization methods to the proposed algorithm. Experiments show that the proposed algorithm can achieve dynamic load-balancing with little additional computation. Compared with other load balancing strategies, the proposed algorithm can distribute rendering load more uniformly among the rendering node and improve system's render performance prominently.

Published in:

Computer Science and Information Technology, 2009. ICCSIT 2009. 2nd IEEE International Conference on

Date of Conference:

8-11 Aug. 2009