Advanced Micro Devices, Inc.
SOFTWARE-CONTROLLED VARIABLE WAVEFRONT SIZE EXECUTION AT GPU

Abstract:

A system includes a processor configured to operate in at least a first mode and a second mode. In the first mode the first processor operates to execute an instruction for an entire wavefront before executing a next instruction for the entire wavefront. In the second mode the processor operates to execute a set instructions for a portion of a wavefront before executing the set instructions for another portion of the same wavefront. The system further includes a memory coupled to the processor. The memory is configured to store a shader program for execution by the processor, wherein the shader program includes at least one indication associated with one of the first mode or the second mode. The processor is further to implement one of the first mode or the second mode while executing the shader program responsive to the at least one indication present in the first shader program.