Multicore processor system and multicore processor

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United States of America Patent

PATENT NO 8762647
APP PUB NO 20120324167A1
SERIAL NO

13238662

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Abstract

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According to one embodiment, a multicore processor system includes: a memory region, and a multicore processor that includes plural cores, a first cache, and a second cache shared between the plural cores. The memory region permits first state in which exclusive use by using the first and second cache is granted to one core, second state in which exclusive use by using the second cache is granted to one core group, and third state in which use by using neither the first cache nor the second cache is granted to all core groups. A kernel unit writes back a first cache to the second cache when a transition of the memory region from the first state to the second state is made, and writes back a second cache to the memory region when a transition of the memory region from the second state to the third state is made.

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Patent Owner(s)

  • KABUSHIKI KAISHA TOSHIBA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Yokosawa, Akira Kanagawa, JP 2 2

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