Address expansion and contraction in a multithreading computer system

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United States of America Patent

PATENT NO 9921848
SERIAL NO

14226947

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Abstract

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Embodiments relate to address expansion and contraction in a multithreading computer system. According to one aspect, a computer system includes a configuration with a core configurable between a single thread (ST) mode and a multithreading (MT) mode. The ST mode addresses a primary thread and the MT mode addresses the primary thread and one or more secondary threads on shared resources of the core. A multithreading facility is configured to control utilization of the configuration to perform a method that includes accessing the primary thread in the ST mode using a core address value and switching from the ST mode to the MT mode. The primary thread or one of the one or more secondary threads is accessed in the MT mode using an expanded address value, where the expanded address value includes the core address value concatenated with a thread address value.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bradbury, Jonathan D Poughkeepsie, US 270 2075
Busaba, Fadi Y Poughkeepsie, US 218 1677
Farrell, Mark S Pleasant Valley, US 139 2390
Gainey,, Jr Charles W Poughkeepsie, US 140 2328
Greiner, Dan F San Jose, US 272 4307
Heller, Lisa Cranton Rhinebeck, US 70 891
Kubala, Jeffrey P Poughquag, US 82 2075
Osisek, Damian L Vestal, US 153 5128
Schmidt, Donald W Stone Ridge, US 173 2709
Slegel, Timothy J Staatsburg, US 400 5854

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