公开(公告)号：US20180159789A1

公开(公告)日：2018-06-07

申请号：US15370529

申请日：2016-12-06

Applicant: Silicon Graphics International Corp.

Inventor： Joseph G. Tietz ,  Russell L. Nicol

IPC: H04L12/873 ,  H04L12/931 ,  H04L12/801

CPC classification number: H04L47/527 ,  H04L47/39 ,  H04L49/70

Abstract: This patent application relates generally to a shared-credit arbitration circuit for use in arbitrating access by a number of virtual channels to a shared resource managed by a destination (arbiter) based on credits allotted to each virtual channel, in which only the destination is aware of the availability of a shared pool of resources, and the destination selectively provides access to the shared pool by the virtual channels and returns credits to the source(s) associated with the virtual channels when shared resources are used so that the source(s) are unaware of the destination's use of the shared resources and are unhindered by the destination's use of shared resources. Among other things, this can significantly reduce the complexity of the source(s) and the required handshaking between the source(s) and the destination.

公开(公告)号：US20180159800A1

公开(公告)日：2018-06-07

申请号：US15370508

申请日：2016-12-06

Applicant: Silicon Graphics International Corp.

Inventor： Joseph G. Tietz ,  Eric C. Fromm

IPC: H04L12/937 ,  H04L29/06 ,  H04L29/08 ,  H04L12/833 ,  H04L12/26

Abstract: This patent application relates generally to an age-based arbitration circuit for use in arbitrating access by a number of data streams to a shared resource managed by a destination (arbiter), in which age-based determinations are performed at the input sources of the data streams in order to designate certain packets as high-priority packets based on packet ages, and the destination expedites processing of the high-priority packets. Among other things, this approach offloads the age-based determinations from the destination, where they otherwise can cause delays in processing packets.

公开(公告)号：US20180159799A1

公开(公告)日：2018-06-07

申请号：US15370485

申请日：2016-12-06

Applicant: Silicon Graphics International Corp.

Inventor： Joseph G. Tietz ,  Eric C. Fromm

IPC: H04L12/937

CPC classification number: H04L49/254

Abstract: This patent application relates generally to a predictive arbitration circuit for use in arbitrating access by a number of data streams to a shared resource managed by a destination (arbiter), where each data stream is associated with a number of sources competing for the shared resource, and the destination provides access to the shared resource based on the number of sources competing for the shared resource rather than just on the number of data streams. Among other things, this approach can more fairly distribute access to the shared resource among the competing sources.

公开(公告)号：US20180157604A1

公开(公告)日：2018-06-07

申请号：US15370545

申请日：2016-12-06

Applicant: Silicon Graphics International Corp.

Inventor： Joseph G. Tietz

IPC: G06F13/16 ,  G06F13/40

CPC classification number: G06F13/1642 ,  G06F13/4022

Abstract: This patent application relates generally to a scripted arbiter in which arbitration processing is controlled through a script executed by the arbiter, where the script determines the type of arbitration used in each successive arbitration cycle. Among other things, the scripted arbiter can support various types of arbitration and can be programmed, even dynamically, for different types and sequences of arbitration. Such scripted arbitration may be particularly useful in a switch such as a crossbar switch.