Providing thread fairness by biasing selection away from a stalling thread using a stall-cycle counter in a hyper-threaded microprocessor
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United States of America Patent
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May 7, 2013
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app pub date -
Nov 8, 2010
filing date -
Apr 9, 2007
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Abstract
A method and apparatus for providing fairness in a multi-processing element environment is herein described. Mask elements are utilized to associated portions of a reservation station with each processing element, while still allowing common access to another portion of reservation station entries. Additionally, bias logic biases selection of processing elements in a pipeline away from a processing element associated with a blocking stall to provide fair utilization of the pipeline.
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