Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2006-12-12
2006-12-12
To, Doris H. (Department: 2616)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C711S114000, C370S428000
Reexamination Certificate
active
07149218
ABSTRACT:
A method and apparatus for a cache line cut through reduces the latency and memory bandwidth of a data processing system. By cutting through or forwarding a cache line to the next processing element, data that has been read from a local memory into a local cache and altered by a processing element need not be restored to the local memory before it is sent to its destination target processing element. By eliminating the write back to the local memory for direct write through to the destination, performance is increased because the bandwidth and latency are decreased. In a preferred embodiment, the processing elements may be contained within a network processor and the altered data may be a header in one network protocol which needs to be modified to another protocol before transfer of the data along the network. Transfer of the data may be to another network processor, another processing element, or to another memory.
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Broberg, III Robert N.
Byrn Jonathan W.
McBride Chad B.
McClannahan Gary P.
Blount Steve
International Business Machines - Corporation
Ojanen Karuna
To Doris H.
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