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1. 发明授权

US08392667B2 Deadlock avoidance by marking CPU traffic as special 有权
标题翻译：通过将CPU流量标记为特殊来防止死锁
公开(公告)号：US08392667B2
公开(公告)日：2013-03-05
申请号：US12334394
申请日：2008-12-12
申请人： Samuel H. Duncan , David B. Glasco , Wei-Je Huang , Atul Kalambur , Patrick R. Marchand , Dennis K. Ma
发明人： Samuel H. Duncan , David B. Glasco , Wei-Je Huang , Atul Kalambur , Patrick R. Marchand , Dennis K. Ma
IPC分类号： G06F12/00
CPC分类号： G06F13/4221 , G06F9/3877 , G06F13/1663
摘要： Deadlocks are avoided by marking read requests issued by a parallel processor to system memory as “special.” Read completions associated with read requests marked as special are routed on virtual channel 1 of the PCIe bus. Data returning on virtual channel 1 cannot become stalled by write requests in virtual channel 0, thus avoiding a potential deadlock.
摘要翻译：通过将并行处理器向系统内存发出的读取请求作为特殊标记来避免死锁。与PCIe总线的虚拟通道1相连的读取完成与标记为特殊的读请求相关联。虚拟通道1上返回的数据不能因虚拟通道0中的写入请求而停止，从而避免潜在的死锁。

2. 发明申请

US20100153658A1 Deadlock Avoidance By Marking CPU Traffic As Special 有权
标题翻译：通过将CPU流量标记为特殊来防止死锁
公开(公告)号：US20100153658A1
公开(公告)日：2010-06-17
申请号：US12334394
申请日：2008-12-12
申请人： Samuel H. Duncan , David B. Glasco , Wei-je Huang , Atul Kalambur , Patrick R. Marchand , Dennis K. Ma
发明人： Samuel H. Duncan , David B. Glasco , Wei-je Huang , Atul Kalambur , Patrick R. Marchand , Dennis K. Ma
IPC分类号： G06F12/08
CPC分类号： G06F13/4221 , G06F9/3877 , G06F13/1663
摘要： Deadlocks are avoided by marking read requests issued by a parallel processor to system memory as “special.” Read completions associated with read requests marked as special are routed on virtual channel 1 of the PCIe bus. Data returning on virtual channel 1 cannot become stalled by write requests in virtual channel 0, thus avoiding a potential deadlock.
摘要翻译：通过将由并行处理器发出的读取请求标记为系统内存作为“特殊”来避免死锁。读取完成与读取请求相关联，标记为特殊的请求在PCIe总线的虚拟通道1上路由。虚拟通道1上返回的数据不能因虚拟通道0中的写入请求而停止，从而避免潜在的死锁。

3. 发明授权

US08539130B2 Virtual channels for effective packet transfer 有权
标题翻译：用于有效数据包传输的虚拟通道
公开(公告)号：US08539130B2
公开(公告)日：2013-09-17
申请号：US12873057
申请日：2010-08-31
申请人： David B. Glasco , Dane T. Mrazek , Samuel H. Duncan , Patrick R. Marchand , Ravi Kiran Manyam , Yin Fung Tang , John H. Edmondson
发明人： David B. Glasco , Dane T. Mrazek , Samuel H. Duncan , Patrick R. Marchand , Ravi Kiran Manyam , Yin Fung Tang , John H. Edmondson
IPC分类号： G06F12/00 , G06F11/00
CPC分类号： G06F13/1605
摘要： The invention sets forth a crossbar unit that includes multiple virtual channels, each virtual channel being a logical flow of data within the crossbar unit. Arbitration logic coupled to source client subsystems is configured to select a virtual channel for transmitting a data request or a data packet to a destination client subsystem based on the type of the source client subsystem and/or the type of data request. Higher priority traffic is transmitted over virtual channels that are configured to transmit data without causing deadlocks and/or stalls. Lower priority traffic is transmitted over virtual channels that can be stalled.
摘要翻译：本发明提出了一种包括多个虚拟通道的交叉开关单元，每个虚拟通道是横杠单元内的逻辑数据流。耦合到源客户端子系统的仲裁逻辑被配置为基于源客户端子系统的类型和/或数据请求的类型来选择用于将数据请求或数据分组发送到目的地客户端子系统的虚拟信道。较高优先级的流量通过配置为传输数据而不引起死锁和/或停顿的虚拟通道进行传输。较低优先级的流量可以通过虚拟通道进行传输，可以停滞。

4. 发明申请

US20110072177A1 VIRTUAL CHANNELS FOR EFFECTIVE PACKET TRANSFER 有权
标题翻译：用于有效分组传输的虚拟通道
公开(公告)号：US20110072177A1
公开(公告)日：2011-03-24
申请号：US12873057
申请日：2010-08-31
申请人： David B. Glasco , Dane T. Mrazek , Samuel H. Duncan , Patrick R. Marchand , Ravi Kiran Manyam , Yin Fung Tang , John H. Edmondson
发明人： David B. Glasco , Dane T. Mrazek , Samuel H. Duncan , Patrick R. Marchand , Ravi Kiran Manyam , Yin Fung Tang , John H. Edmondson
IPC分类号： G06F13/14 , G06F13/00
CPC分类号： G06F13/1605
摘要： The invention sets forth a crossbar unit that includes multiple virtual channels, each virtual channel being a logical flow of data within the crossbar unit. Arbitration logic coupled to source client subsystems is configured to select a virtual channel for transmitting a data request or a data packet to a destination client subsystem based on the type of the source client subsystem and/or the type of data request. Higher priority traffic is transmitted over virtual channels that are configured to transmit data without causing deadlocks and/or stalls. Lower priority traffic is transmitted over virtual channels that can be stalled.
摘要翻译：本发明提出了一种包括多个虚拟通道的交叉开关单元，每个虚拟通道是横杠单元内的逻辑数据流。耦合到源客户端子系统的仲裁逻辑被配置为基于源客户端子系统的类型和/或数据请求的类型来选择用于将数据请求或数据分组发送到目的地客户端子系统的虚拟信道。较高优先级的流量通过配置为传输数据而不引起死锁和/或停顿的虚拟通道进行传输。较低优先级的流量可以通过虚拟通道进行传输，可以停滞。

5. 发明授权

US09424227B2 Providing byte enables for peer-to-peer data transfer within a computing environment 有权
标题翻译：提供字节可以在计算环境中进行对等数据传输
公开(公告)号：US09424227B2
公开(公告)日：2016-08-23
申请号：US13541633
申请日：2012-07-03
申请人： Samuel H. Duncan , Dennis K. Ma , Wei-Je Huang , Gary Ward
发明人： Samuel H. Duncan , Dennis K. Ma , Wei-Je Huang , Gary Ward
IPC分类号： G06F15/173 , G06F15/167 , G06F15/16 , G06F15/163 , G06F15/17
CPC分类号： G06F15/167 , G06F15/16 , G06F15/163 , G06F15/17 , G06F15/173
摘要： Non-contiguous or tiled payload data are efficiently transferred between peers over a fabric. Specifically, a client transfers a byte enable message to a peer device via a mailbox mechanism, where the byte enable message specifies which bytes of the payload data being transferred via the data packet are to be written to the frame buffer on the peer device and which bytes are not to be written. The client transfers the non-contiguous or tiled payload payload data to the peer device. Upon receiving the payload data, the peer device writes bytes from the payload data into the target frame buffer for only those bytes enabled via the byte enable message. One advantage of the present invention is that non-contiguous or tiled data are transferred over a fabric with improved efficiency.
摘要翻译：非连续或平铺的有效载荷数据可以通过一个结构在对等体之间有效传输。具体来说，客户端通过邮箱机制向对等设备传送字节使能消息，其中字节使能消息指定要经由数据包传送的有效载荷数据的哪些字节将被写入对等设备上的帧缓冲器，以及哪个字节不被写入。客户端将非连续或平铺的有效载荷有效载荷数据传输到对等设备。在接收到有效载荷数据时，对等设备将字节从有效载荷数据写入目标帧缓冲器，以便仅通过字节使能消息使能的字节。本发明的一个优点在于，不连续的或平铺的数据以提高的效率在织物上传送。

6. 发明授权

US07451259B2 Method and apparatus for providing peer-to-peer data transfer within a computing environment 有权
标题翻译：用于在计算环境内提供对等数据传输的方法和装置
公开(公告)号：US07451259B2
公开(公告)日：2008-11-11
申请号：US11005451
申请日：2004-12-06
申请人： Samuel H. Duncan , Wei-Je Huang , John H. Edmondson
发明人： Samuel H. Duncan , Wei-Je Huang , John H. Edmondson
IPC分类号： G06F13/36 , G06F13/00
CPC分类号： H04L49/901 , H04L49/90 , H04L49/9073
摘要： A method and apparatus for providing peer-to-peer data transfer through an interconnecting fabric. The method and apparatus enable a first device to read and/or write data to/from a local memory of a second device by communicating read and write requests across the interconnectivity fabric. Such data transfer can be performed even when the communication protocol of the interconnectivity fabric does not permit such transfers.
摘要翻译：一种用于通过互连结构提供对等数据传输的方法和装置。该方法和装置使得第一设备能够通过在互连结构上传递读取和写入请求来向/从第二设备的本地存储器读取和/或写入数据。即使当互连结构的通信协议不允许这样的传输时，也可以执行这种数据传送。

7. 发明授权

US07275123B2 Method and apparatus for providing peer-to-peer data transfer within a computing environment 有权
标题翻译：用于在计算环境内提供对等数据传输的方法和装置
公开(公告)号：US07275123B2
公开(公告)日：2007-09-25
申请号：US11005150
申请日：2004-12-06
申请人： Samuel H. Duncan , Wei-Je Huang , John H. Edmondson
发明人： Samuel H. Duncan , Wei-Je Huang , John H. Edmondson
IPC分类号： G06F13/36 , G06F13/00
CPC分类号： H04L12/66
摘要： A method and apparatus for providing peer-to-peer data transfer through an interconnecting fabric. The method and apparatus enable a first device to read and/or write data to/from a local memory of a second device by communicating read and write requests across the interconnectivity fabric. Such data transfer can be performed even when the communication protocol of the interconnectivity fabric does not permit such transfers.
摘要翻译：一种用于通过互连结构提供对等数据传输的方法和装置。该方法和装置使得第一设备能够通过在互连结构上传递读取和写入请求来向/从第二设备的本地存储器读取和/或写入数据。即使当互连结构的通信协议不允许这样的传输时，也可以执行这种数据传送。

8. 发明授权

US08547993B1 Asynchronous interface for communicating between clock domains 有权
标题翻译：用于在时钟域之间通信的异步接口
公开(公告)号：US08547993B1
公开(公告)日：2013-10-01
申请号：US11463682
申请日：2006-08-10
申请人： Lincoln G. Garlick , Richard A. Silkebakken , Prakash G. Apte , Paolo E. Sabella , Samuel H. Duncan , Dennis K. Ma , Sean J. Treichler
发明人： Lincoln G. Garlick , Richard A. Silkebakken , Prakash G. Apte , Paolo E. Sabella , Samuel H. Duncan , Dennis K. Ma , Sean J. Treichler
IPC分类号： H04L12/66 , H04L29/06
CPC分类号： H04L29/06 , G06F13/4226
摘要： Methods, apparatuses, and systems are presented for performing asynchronous communications involving using an asynchronous interface to send signals between a source device and a plurality of client devices, the source device and the plurality of client devices being part of a processing unit capable of performing graphics operations, the source device being coupled to the plurality of client devices using the asynchronous interface, wherein the asynchronous interface includes at least one request signal, at least one address signal, at least one acknowledge signal, and at least one data signal, and wherein the asynchronous interface operates in accordance with at least one programmable timing characteristic associated with the source device.
摘要翻译：呈现用于执行涉及使用异步接口在源设备和多个客户端设备之间发送信号的异步通信的方法，设备和系统，源设备和多个客户端设备是能够执行图形的处理单元的一部分所述源设备使用所述异步接口耦合到所述多个客户端设备，其中所述异步接口包括至少一个请求信号，至少一个地址信号，至少一个确认信号和至少一个数据信号，并且其中异步接口根据与源设备相关联的至少一个可编程定时特性进行操作。

9. 发明授权

US09442759B2 Concurrent execution of independent streams in multi-channel time slice groups 有权
标题翻译：在多通道时间片组中并发执行独立流
公开(公告)号：US09442759B2
公开(公告)日：2016-09-13
申请号：US13316334
申请日：2011-12-09
申请人： Samuel H. Duncan , Lacky V. Shah , Sean J. Treichler , Daniel Elliot Wexler , Jerome F. Duluk, Jr. , Philip Browning Johnson , Jonathon Stuart Ramsay Evans
发明人： Samuel H. Duncan , Lacky V. Shah , Sean J. Treichler , Daniel Elliot Wexler , Jerome F. Duluk, Jr. , Philip Browning Johnson , Jonathon Stuart Ramsay Evans
IPC分类号： G06F9/46 , G06F13/00 , G06F9/48 , G06F9/38
CPC分类号： G06F9/4881 , G06F9/3851 , G06F9/461
摘要： A time slice group (TSG) is a grouping of different streams of work (referred to herein as “channels”) that share the same context information. The set of channels belonging to a TSG are processed in a pre-determined order. However, when a channel stalls while processing, the next channel with independent work can be switched to fully load the parallel processing unit. Importantly, because each channel in the TSG shares the same context information, a context switch operation is not needed when the processing of a particular channel in the TSG stops and the processing of a next channel in the TSG begins. Therefore, multiple independent streams of work are allowed to run concurrently within a single context increasing utilization of parallel processing units.
摘要翻译：时间片组（TSG）是共享相同上下文信息的不同工作流（本文称为“信道”）的分组。属于TSG的信道集合以预定的顺序被处理。然而，当通道在处理过程中停顿时，可以切换具有独立工作的下一个通道来完全加载并行处理单元。重要的是，由于TSG中的每个信道共享相同的上下文信息，当TSG中的特定信道的处理停止并且TSG中的下一个信道的处理开始时，不需要上下文切换操作。因此，允许多个独立的工作流在单个上下文中同时运行，增加并行处理单元的利用率。

10. 发明授权

US07024509B2 Passive release avoidance technique 失效
公开(公告)号：US07024509B2
公开(公告)日：2006-04-04
申请号：US09944515
申请日：2001-08-31
申请人： Samuel H. Duncan , Steven Ho
发明人： Samuel H. Duncan , Steven Ho
IPC分类号： G06F13/36
CPC分类号： H03K5/19 , G06F13/24 , G06F13/4081 , G06F2213/2402
摘要： A system and method avoids passive release of interrupts in a computer system. The computer system includes a plurality of processors, a plurality of input/output (I/O) devices each capable of issuing interrupts, and an I/O bridge interfacing between the I/O devices and the processors. Interrupts, such as level sensitive interrupts (LSIs), asserted by an I/O device coupled to a specific port of the I/O bridge are sent to a processor for servicing by an interrupt controller, which also sets an interrupt pending flag. Upon dispatching the respective interrupt service routine, the processor generates two ordered messages. The first ordered message is sent to the I/O device that triggered the interrupt, informing it that the interrupt has been serviced. The second ordered message directs the interrupt controller to clear the respective interrupt pending flag. Both messages are sent, in order, to the particular I/O bridge port to which the subject I/O device is coupled. After forwarding the first message to the I/O device, the bridge port forwards the second message to the interrupt controller so that the interrupt can be deasserted before the interrupt pending flag is cleared.

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