Shadow pointer directory in an inclusive hierarchical cache

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11977486
APP PUB NO 20230315633A1
SERIAL NO

17712510

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A computer system includes a processor core and a memory system in signal communication with the processor core. The memory system includes a first cache and a second cache. The first cache is arranged at a first level of a hierarchy in the memory system and is configured to store a plurality of first-cache entries. The second cache is arranged at a second level of the hierarchy that is lower than the first level, and stores a plurality of second-cache entries. The first cache maintains a directory that contains information for each of the first-cache entries. The second cache maintains a shadow pointer directory (SPD) that includes one or more SPD entries that maps each of the first-cache entries to a corresponding second cache entry at a lower-level cache location.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • IBM CORPORATION

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Alexander, Gregory William Pflugerville, US 32 89
Berger, Deanna Postles Dunn Hyde Park, US 32 57
Blake, Michael A Wappingers Falls, US 67 908
Branciforte, Richard Joseph Austin, US 9 1
Bronson, Timothy Round Rock, US 14 5
ElSharif, Ashraf Austin, US 7 5
Jacobi, Christian West Park, US 381 3591
Kaltenbach, Markus Tübingen, DE 70 471
Pritchard, Taylor J Austin, US 4 1
Tsai, Aaron Hyde Park, US 56 382

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Nov 7, 2027
7.5 Year Payment $3600.00 $1800.00 $900.00 Nov 7, 2031
11.5 Year Payment $7400.00 $3700.00 $1850.00 Nov 7, 2035
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00