Electrical computers and digital data processing systems: input/ – Access arbitrating
Reexamination Certificate
2005-12-12
2008-12-23
Myers, Paul R (Department: 2111)
Electrical computers and digital data processing systems: input/
Access arbitrating
C710S052000, C710S054000, C710S260000, C711S154000
Reexamination Certificate
active
07469309
ABSTRACT:
Methods and apparatus for peer-to-peer data transfers in a computing environment provide configurable control over the number of outstanding read requests by one peer device to another. A requesting peer device includes a control register that stores a high-watermark value associated with requests to a target peer device. Each time a read request to the target peer device is generated, the number of such requests already outstanding is compared to the high-water mark. The request is blocked if the number of outstanding requests exceeds the high-water mark and remains blocked until such time as the number of outstanding requests no longer exceeds the high-water mark. Different high-water marks can be associated with different combinations of requesting and target devices.
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Duncan Samuel Hammond
Huang Wei-Je
Kanekal Radha
Misiura Brian T
Myers Paul R
Nvidia Corporation
Townsend and Townsend / and Crew LLP
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