公开(公告)号：US11886367B2

公开(公告)日：2024-01-30

申请号：US17545930

申请日：2021-12-08

申请人： ATI Technologies ULC

发明人： Michael E. McLean ,  Philip Ng

IPC分类号： G06F13/372 ,  G06F13/364 ,  G06F9/48 ,  G06F13/40 ,  G06F13/366

CPC分类号： G06F13/372 ,  G06F9/4812 ,  G06F13/364 ,  G06F13/366 ,  G06F13/4059

摘要： An arbitration system receives requests to access a destination during an arbitration window that spans multiple processor clock cycles. During each clock cycle, the destination is monitored to determine whether the destination is suffering from backpressure by receiving more requests than the destination is able to accommodate during the clock cycle. In response to detecting backpressure, a masking index value assigned to a requesting source is incremented, which limits an amount of requests from the source that will be granted destination access during a subsequent arbitration window. Alternatively, in response to detecting an absence of backpressure during an arbitration window, the masking index value is decremented, which increases the amount of requests from the source that will be granted destination access during a subsequent arbitration window. This arbitration process continues for successive arbitration windows, oscillating between incrementing and decrementing the masking index value during the successive arbitration windows.

公开(公告)号：US11868292B1

公开(公告)日：2024-01-09

申请号：US17656710

申请日：2022-03-28

申请人： Amazon Technologies, Inc.

发明人： Lev Vaskevich ,  Noam Katz

IPC分类号： G06F13/366 ,  G06F9/50

CPC分类号： G06F13/366 ,  G06F9/5033

摘要： A plurality of resource requesters may be configured to consume a resource to perform a task. Each of the plurality of resource requesters can be allocated a resource budget to consume the resource to perform the task. An arbiter can select one of the plurality of resource requesters to consume the resource based on an arbitration scheme. When a resource requester is selected, the amount of resource consumed by the resource requester can be deducted from its resource budget. When the resource requester is idle for a number of cycles when selected, the corresponding resource budget can be further reduced to account for the actual amount of resource consumed and wasted by the resource requester, which can provide fairness in resource consumption over few rounds of arbitration.

公开(公告)号：US11074205B2

公开(公告)日：2021-07-27

申请号：US16540053

申请日：2019-08-14

申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION

发明人： Richard L. Arndt ,  Florian Auernhammer ,  Wayne M. Barrett ,  Robert A. Drehmel ,  Guy L. Guthrie ,  Michael S. Siegel ,  William J. Starke

IPC分类号： G06F13/24 ,  G06F13/366 ,  G06F9/38 ,  G06F13/42 ,  G06F13/40

摘要： A snooper of a processing unit connected to processing units via a system fabric receives a first single bus command in a bus protocol that allows sampling over the system fabric of the capability of snoopers to handle an interrupt and returns a first response indicating the capability of the snooper to handle the interrupt. The snooper, in response to receiving a second single bus command in the bus protocol to poll a first selection of snoopers for an availability status to service a criteria specified in the second single bus command, returns a second response indicating the availability of the snooper to service the criteria. The snooper, in response to receiving a third single bus command in the bus protocol to direct the snooper to handle the interrupt, assigns the interrupt to a particular processor thread of a respective selection of the one or more separate selections of processors threads distributed in the processing unit.

公开(公告)号：US20210004341A1

公开(公告)日：2021-01-07

申请号：US16932383

申请日：2020-07-17

申请人： Rambus Inc.

发明人： Bart Trojanowski ,  Michael L. Takefman ,  Maher Amer

IPC分类号： G06F13/362 ,  G06F13/42 ,  G06F13/366 ,  G06F9/30 ,  G06F9/48

摘要： A method of implementing a multi-threaded device driver for a computer system is disclosed. A polling device driver is partitioned into a plurality of driver threads for controlling a device of a computer system. The device has a first device state of an unscouted state and a scouted state, and a second device state of an inactive state and an active state. A driver thread of the plurality of driver threads determines that the first device state of the device state is in the unscouted state, and changes the first state of the device to the scouted state. The driver thread further determines that the second device state of the device is in the inactive state and changes the second device state of the device to the active state. The driver thread executes an operation on the device during a pre-determined time slot configured for the driver thread.

公开(公告)号：US10719466B2

公开(公告)日：2020-07-21

申请号：US16032241

申请日：2018-07-11

申请人： Rambus Inc.

发明人： Bart Trojanowski ,  Michael L. Takefman ,  Maher Amer

IPC分类号： G06F9/30 ,  G06F13/362 ,  G06F13/42 ,  G06F13/366 ,  G06F9/48

摘要： A polling device driver is partitioned into a plurality of driver threads for controlling a device of a computer system. The device has a first device state of an unscouted state and a scouted state, and a second device state of an inactive state and an active state. A driver thread of the plurality of driver threads determines that the first device state of the device state is in the unscouted state, and changes the first state of the device to the scouted state. The driver thread further determines that the second device state of the device is in the inactive state and changes the second device state of the device to the active state. The driver thread executes an operation on the device during a pre-determined time slot configured for the driver thread.

公开(公告)号：US10572422B2

公开(公告)日：2020-02-25

申请号：US15970677

申请日：2018-05-03

申请人： Microchip Technology Incorporated

发明人： Morten Werner Lund ,  Odd Magne Reitan ,  Lloyd Clark

IPC分类号： G06F13/26 ,  G06F13/366 ,  G06F13/372 ,  G06F13/37 ,  G06F13/374 ,  G09G5/00 ,  G06F13/42 ,  G06F9/54 ,  G06F3/041 ,  G06F13/364

摘要： The present disclosure relates generally to serial communication links and, more specifically, to events communicated on serial communication links and the timing of those events. The events may be communicated according to a prioritization process.

公开(公告)号：US20200050569A1

公开(公告)日：2020-02-13

申请号：US16473561

申请日：2016-12-30

申请人： Intel Corporation

发明人： Gaspar MORA PORTA ,  Michael A PARKER ,  Roberto PENARANDA CEBRIAN ,  Albert S. CHENG ,  Francesc GUIM BERNAT

IPC分类号： G06F13/40 ,  H04L12/801 ,  H04L12/937 ,  G06F13/366

摘要： In some embodiments, the invention involves using a weighted arbiter switch to provide fairness in passing input streams through a plurality of input ports to an output port. The weighted arbiter switches may be combined in a hierarchical architecture to enable routing through many levels of switches. Each input port has an associated flow counter to count input stream traffic through the input port. An arbiter switch uses the flow counts and weights from arbiter switches at a lower level in the hierarchy to generate a fairly distributed routing of input streams through the output port. Other embodiments are described and claimed.

公开(公告)号：US20190377696A1

公开(公告)日：2019-12-12

申请号：US16006705

申请日：2018-06-12

申请人： International Business Machines Corporation

发明人： Sarvesh S. Patel ,  Subhojit Roy ,  Kushal S. Patel

IPC分类号： G06F13/366 ,  G06F13/42

摘要： A computer program product, according to one embodiment, includes a computer readable storage medium having program instructions embodied therewith. The computer readable storage medium is not a transitory signal per se. Moreover, the program instructions are readable and/or executable by a controller to cause the controller to perform a method which includes: receiving a same input/output request along more than one communication paths, and evaluating a workload associated with each of the communication paths. A communication path having a lowest workload associated therewith is selected. Moreover, information corresponding to the input/output request as well as a status are sent along the selected communication path. The status sent indicates that the selected communication path was chosen to satisfy the input/output request. A special status indicating that none of the remaining communication paths were chosen to satisfy the input/output request is also sent along each of the remaining communication paths.

公开(公告)号：US20190303326A1

公开(公告)日：2019-10-03

申请号：US16368358

申请日：2019-03-28

申请人： Provino Technologies, Inc.

发明人： Shailendra DESAI ,  Mark PEARCE ,  Amit JAIN ,  Rutul BHATT

IPC分类号： G06F13/366 ,  G06F13/362 ,  G06F9/48 ,  G06F9/46

摘要： Arbitrating among portions of multiple transactions and transmitting a winning portion over one of a multiplicity of virtual channels associated with an interconnect on a clock cycle-by-clock cycle basis. By repeatedly performing the above each clock cycle, winning portions are interleaved and transmitted over the multiplicity of virtual channels over multiple clock cycles respectively.

公开(公告)号：US20190154409A1

公开(公告)日：2019-05-23

申请号：US16257723

申请日：2019-01-25

申请人： Axon Enterprise, Inc.

发明人： Siddharth Heroor ,  Magne H. Nerheim

IPC分类号： F41H13/00 ,  H05C1/04 ,  H04W12/06 ,  H04L29/06 ,  G06F21/44 ,  G06F21/32 ,  G06F13/366 ,  G06F13/36 ,  H05C1/00 ,  G06F13/40

摘要： A conducted electrical weapon (“CEW”) launches wire-tethered electrodes from multiple cartridges to provide a current through a human or animal target to impede locomotion of the target. The CEW includes a handle and one or more deployment units. A handle and each deployment unit include a processing circuit and memory. The processing circuit of a handle may communicate with the processing circuit of the one or more deployment units. The processing circuit in a deployment unit may confirm receipt of a message from the processing circuit in a handle. A handle may provide operation and usage data to a deployment unit for storage. A handle may receive data from a deployment unit.