LOAD BALANCING AT A GRAPHICS PROCESSING UNIT
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United States of America Patent
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Issued Date -
Jun 23, 2016
app pub date -
Dec 19, 2014
filing date -
Dec 19, 2014
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Abstract
A GPU of a processor performers load balancing by enabling and disabling CUs based on the GPU's processing load. A power control module identifies a current processing load of the GPU based on, for example, an activity level of one or more modules of the GPU. The power control module also identifies an expected future processing load of the GPU based on, for example, a number of threads (wavefronts) scheduled to be executed at the GPU. Based on a combination of the current processing load and the expected future processing load, the power control module sets the number of CUs of the GPU that are enabled and the number that are disabled (e.g. clock gated or power gated). By changing the number of enabled CUs based on processing load, the power control module maintains performance at the GPU while conserving power.
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