Dynamic Feedback Load Balancing

Abstract

A method for rendering a scene across N number of processors is provided. The method includes evaluating performance statistics for each of the processors and establishing load rendering boundaries for each of the processors, the boundaries defining a respective portion of the scene. The method also includes dynamically adjusting the boundaries based upon the establishing and the evaluating.

1 . A method for rendering a scene across N number of processors, comprising:
 evaluating performance statistics for each of the processors;   establishing load rendering boundaries for each of the processors, the boundaries defining a respective portion of the scene; and   dynamically adjusting the boundaries based upon the establishing and the evaluating.   
     
     
         2 . The method of  claim 1 , wherein the processors are graphics processing units (GPUs). 
     
     
         3 . The method of  claim 2 , wherein the evaluating includes calculating a sum of absolute differences of consecutive scene frames. 
     
     
         4 . The method of  claim 3 , wherein the evaluating includes performing a scene change analysis. 
     
     
         5 . The method of  claim 4 , wherein the evaluating, establishing, and adjusting produce accessible historical data. 
     
     
         6 . The method of  claim 5 , wherein the historical data is referenced to perform subsequent renderings. 
     
     
         7 . A computer readable media storing instructions wherein said instructions when executed are adapted to process work items on a processing unit to perform a method for rendering a scene across N number of processors, wherein the method comprises:
 evaluating performance statistics for each of the processors;   establishing load rendering boundaries for each of the processors, the boundaries defining a respective portion of the scene; and   dynamically adjusting the boundaries based upon the establishing and the evaluating.   
     
     
         8 . The computer readable media of  claim 7 , wherein the processors are graphics processing units (GPUs). 
     
     
         9 . The computer readable media of  claim 7 , wherein the evaluating includes calculating a sum of absolute differences of consecutive scene frames. 
     
     
         10 . The computer readable media of  claim 9 , wherein the evaluating includes performing a scene change analysis. 
     
     
         11 . The computer readable media of  claim 10 , wherein the evaluating, establishing, and adjusting produce accessible historical data. 
     
     
         12 . The computer readable media of  claim 11 , wherein the historical data is referenced to perform subsequent renderings. 
     
     
         13 . A computing system, comprising:
 a system memory;   two or more processors coupled to the system memory; and   an execution unit configured to
 evaluate performance statistics for each of the processors; 
 establish load rendering boundaries for each of the processors, the boundaries defining a respective portion of the scene; and 
 dynamically adjust the boundaries based upon the establishing and the evaluating. 
   
     
     
         14 . The computing system of  claim 13 , wherein the processors are graphics processing units (GPUs). 
     
     
         15 . The computing system of  claim 13 , wherein the processors include at least one from the group including graphics processing units (GPUs) and central processing units (CPUs). 
     
     
         16 . The computing system of  claim 13 , wherein the evaluating includes determining frame complexity. 
     
     
         17 . The computing system of  claim 16 , wherein the dynamically adjusting includes at least one from the group including (i) adjusting the boundaries based upon the frame complexity and (ii) changing GPU rendering ratios based upon the frame complexity. 
     
     
         18 . The method of  claim 1 , wherein the establishing includes an analysis of frame complexity. 
     
     
         19 . The method of  claim 18 , wherein the dynamically adjusting includes at least one from the group including (i) adjusting the boundaries based upon the frame complexity and (ii) changing GPU rendering ratios based upon the frame complexity. 
     
     
         20 . The method of  claim 1 , wherein the establishing includes an analysis of rendering prediction data.