Opportunistic consumer instruction steering based on producer instruction value prediction in a multi-cluster processor

Opportunistic consumer instruction steering based on producer instruction value prediction in a multi-cluster processor is disclosed. A processor provides producer instructions and consumer instructions to a steering circuit that steers the program instructions to clusters of instruction execution c...

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Hauptverfasser: Perais, Arthur, Tekmen, Yusuf Cagatay, Priyadarshi, Shivam, Al Sheikh, Rami Mohammad, Kothinti Naresh, Vignyan Reddy
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creator Perais, Arthur
Tekmen, Yusuf Cagatay
Priyadarshi, Shivam
Al Sheikh, Rami Mohammad
Kothinti Naresh, Vignyan Reddy
description Opportunistic consumer instruction steering based on producer instruction value prediction in a multi-cluster processor is disclosed. A processor provides producer instructions and consumer instructions to a steering circuit that steers the program instructions to clusters of instruction execution circuits. An input value provided to a consumer instruction may be a produced value of a producer instruction, creating a dependency. The steering circuit steers a producer instruction to a first cluster and, in response to receiving the consumer instruction and the predicted value of the producer instruction, provides the predicted value to at least a second cluster and steers the consumer instruction to the second cluster for execution with the predicted value as the input value. A consumer instruction can be executed in a different cluster than a producer instruction without a cluster-to-cluster latency penalty, which allows the instruction loads to be better balanced among the clusters for higher processor throughput.
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subjects CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
title Opportunistic consumer instruction steering based on producer instruction value prediction in a multi-cluster processor
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