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1. 发明申请

US20060045108A1 Half RDMA and half FIFO operations 失效
标题翻译：半RDMA和半FIFO操作
公开(公告)号：US20060045108A1
公开(公告)日：2006-03-02
申请号：US11017406
申请日：2004-12-20
申请人： Robert Blackmore , Fu Chang , Piyush Chaudhary , Kevin Gildea , Jason Goscinski , Rama Govindaraju , Donald Grice , Leonard Helmer , Patricia Heywood , Peter Hochschild , John Houston , Chulho Kim , Steven Martin
发明人： Robert Blackmore , Fu Chang , Piyush Chaudhary , Kevin Gildea , Jason Goscinski , Rama Govindaraju , Donald Grice , Leonard Helmer , Patricia Heywood , Peter Hochschild , John Houston , Chulho Kim , Steven Martin
IPC分类号： H04L12/56
CPC分类号： H04L67/1097
摘要： In a multinode data processing system in which nodes exchange information over a network or through a switch, a structure and mechanism is provided within the realm of Remote Direct Memory Access (RDMA) operations in which DMA operations are present on one side of the transfer but not the other. On the side in which the transfer is not carried out in DMA fashion, transfer processing is carried out under program control; this is in contrast to the transfer on the DMA side which is characteristically carried out in hardware. Usage of these combination processes is useful in programming situations where RDMA is carried out to or from contiguous locations in memory on one side and where memory locations on the other side is noncontiguous. This split mode of transfer is provided both for read and for write operations.
摘要翻译：在其中节点通过网络或通过交换机交换信息的多节点数据处理系统中，在远程直接存储器访问（RDMA）操作的领域内提供了结构和机制，其中DMA操作存在于传输的一侧，但是不是其他的在DMA方式不进行传输的一方，传送处理在程序控制下进行; 这与在硬件上进行特征性的DMA侧的传输相反。这些组合过程的使用对于在一侧执行RDMA到存储器中的连续位置并且另一侧上的存储器位置不连续地执行RDMA的编程情况是有用的。这种分离传输模式为读取和写入操作都提供。

2. 发明申请

US20060045005A1 Failover mechanisms in RDMA operations 失效
标题翻译： RDMA操作中的故障切换机制
公开(公告)号：US20060045005A1
公开(公告)日：2006-03-02
申请号：US11017574
申请日：2004-12-20
申请人： Robert Blackmore , Fu Chang , Piyush Chaudhary , Jason Goscinski , Rama Govindaraju , Leonard Helmer , Peter Hochschild , John Houston , Steven Martin , Donald Grice
发明人： Robert Blackmore , Fu Chang , Piyush Chaudhary , Jason Goscinski , Rama Govindaraju , Leonard Helmer , Peter Hochschild , John Houston , Steven Martin , Donald Grice
IPC分类号： H04J1/16
CPC分类号： H04L1/0079 , G06F11/1443 , H04L1/1809 , H04L2001/0097
摘要： In remote direct memory access transfers in a multinode data processing system in which the nodes communicate with one another through communication adapters coupled to a switch or network, failures in the nodes or in the communication adapters can produce the phenomenon known as trickle traffic, which is data that has been received from the switch or from the network that is stale but which may have all the signatures of a valid packet data. The present invention addresses the trickle traffic problem in two situations: node failure and adapter failure. In the node failure situation randomly generated keys are used to reestablish connections to the adapter while providing a mechanism for the recognition of stale packets. In the adapter failure situation, a round robin context allocation approach is used with adapter state contexts being provided with state information which helps to identify stale packets. In another approach to handling the adapter failure situation counts are assigned which provide an adapter failure number to the node which will not match a corresponding number in a context field in the adapter, thus enabling the identification of stale packets.
摘要翻译：在多节点数据处理系统中的远程直接存储器访问传输中，其中节点通过耦合到交换机或网络的通信适配器彼此通信，节点或通信适配器中的故障可能产生称为流量流量的现象，已经从交换机接收到的数据或者来自网络的数据已经过时，但是可能具有有效分组数据的所有签名。本发明解决了两种情况下的流量流量问题：节点故障和适配器故障。在节点故障情况下，随机生成的密钥用于重新建立与适配器的连接，同时提供用于识别过时数据包的机制。在适配器故障情况下，使用循环上下文分配方法，适配器状态上下文被提供有状态信息，其有助于识别过时的分组。在处理适配器故障情况的另一种方法中，分配了向适配器上下文字段中不匹配相应号码的节点提供适配器故障号，从而能够识别过时的数据包。

3. 发明申请

US20060059282A1 Snapshot interface operations 失效
公开(公告)号：US20060059282A1
公开(公告)日：2006-03-16
申请号：US11017332
申请日：2004-12-20
申请人： Piyush Chaudhary , Jason Goscinski , Rama Govindaraju , Leonard Helmer , Peter Hochschild , Deryck Hong , John Houston , Jang-Soo Lee , Steven Martin , Yuqing Zhu
发明人： Piyush Chaudhary , Jason Goscinski , Rama Govindaraju , Leonard Helmer , Peter Hochschild , Deryck Hong , John Houston , Jang-Soo Lee , Steven Martin , Yuqing Zhu
IPC分类号： G06F13/00
CPC分类号： H04L67/1097
摘要： In a multinode data processing system in which the nodes communicate with one another via communication adapters over a network or switch, the adapters are provided with a dual register mechanism for tracking microcode task status. Upon the issuance of a disruptive command that requires attention from one of the nodes, the task status maintained in one register is copied to the snapshot register. As tasks within the adapter are completed, both registers are updated, thus providing a mechanism for the nodes to determine that all tasks active at the time of the disruptive command have completed. This means that the nodes now have a mechanism for determining, as soon as possible, that all tasks that are active when a disruptive command occurs have completed, thus allowing the data processing node to perform such operations as releasing system memory that is associated with the disruptive command, thus eliminating temporal overhead that can affect performance.

4. 发明申请

US20060047771A1 RDMA server (OSI) global TCE tables 有权
标题翻译： RDMA服务器（OSI）全局TCE表
公开(公告)号：US20060047771A1
公开(公告)日：2006-03-02
申请号：US11017456
申请日：2004-12-20
申请人： Robert Blackmore , Piyush Chaudhary , Jason Goscinski , Leonard Helmer , John Houston , Steven Martin
发明人： Robert Blackmore , Piyush Chaudhary , Jason Goscinski , Leonard Helmer , John Houston , Steven Martin
IPC分类号： G06F15/16
CPC分类号： H04L67/1097 , H04L67/12 , H04L69/14 , H04L69/326
摘要： In remote direct memory access (RDMA) transfers in a multinode data processing system in which the nodes communicate with one another through communication adapters coupled to a switch or network, there is a need for the system to ensure efficient memory protection mechanisms across jobs. A method is thus desired for addressing virtual memory on local and remote servers that is independent of the process ID on the local and/or remote node. The use of global Translation Control Entry (TCE) tables that are accessed/owned by RDMA jobs and are managed by a device driver in conjunction with a Protocol Virtual Offset (PVO) address format solves this problem.
摘要翻译：在多节点数据处理系统中的远程直接存储器访问（RDMA）传输中，其中节点通过耦合到交换机或网络的通信适配器彼此通信，所以系统需要确保跨作业的有效的存储器保护机制。因此，需要一种方法来解决本地和远程服务器上与本地和/或远程节点上的进程ID无关的虚拟内存。使用由RDMA作业访问/拥有并由设备驱动程序与协议虚拟偏移（PVO）地址格式一起管理的全局翻译控制条目（TCE）表解决了此问题。

5. 发明申请

US20060045109A1 Early interrupt notification in RDMA and in DMA operations 审中-公开
标题翻译： RDMA和DMA操作中的早期中断通知
公开(公告)号：US20060045109A1
公开(公告)日：2006-03-02
申请号：US11017573
申请日：2004-12-20
申请人： Robert Blackmore , Leonard Helmer , Patricia Heywood , John Houston , Steven Martin
发明人： Robert Blackmore , Leonard Helmer , Patricia Heywood , John Houston , Steven Martin
IPC分类号： H04L12/28
CPC分类号： H04L67/1097 , H04L69/32
摘要： In a multinode data processing system in which data is transferred, via direct memory access (DMA) or in remote direct memory access (RDMA), from a source node to at least one destination node through communication adapters coupling each node to a network or switch, a method is provided in which interrupt handling is overlapped with data transfer so as to allow interrupt processing overhead to run in parallel at the destination node with the movement of data to provide performance benefits. The method is also applicable to situations involving multiple interrupt levels corresponding to multithreaded handling capabilities.
摘要翻译：在通过直接存储器访问（DMA）或远程直接存储器访问（RDMA））传输数据的多节点数据处理系统中，通过将每个节点耦合到网络或交换机的通信适配器，从源节点到至少一个目的地节点提供了一种方法，其中中断处理与数据传输重叠，以便允许中断处理开销在目的地节点上并行运行，随着数据的移动而提供性能优势。该方法也适用于涉及多线程处理能力的多个中断级别的情况。

6. 发明申请

US20050091390A1 Speculative method and system for rapid data communications 有权
标题翻译：快速数据通信的投机方法和系统
公开(公告)号：US20050091390A1
公开(公告)日：2005-04-28
申请号：US10692496
申请日：2003-10-24
申请人： Leonard Helmer , Patricia Heywood , Paul Dinicola , Steven Martin , Gregory Salyer , Carol Soto
发明人： Leonard Helmer , Patricia Heywood , Paul Dinicola , Steven Martin , Gregory Salyer , Carol Soto
IPC分类号： G06F15/16 , G06F15/17
CPC分类号： G06F15/17
摘要： A system and method that utilizes a dedicated transmission queue to enable expedited transmission of data messages to adaptive “nearest neighbor” nodes within a cluster. Packet descriptors are pre-fetched by the communications adapter hardware during the transmission of the preceding data element and setup for the next transmission is performed in parallel with the transmission of the preceding data element. Data elements of a fixed length that is equal to the cache line size of the communication hardware can optionally be used to provide optimized transfer between computer memory and communications hardware. The data receiving processing can also be optimized to recognize and handle cache line size data elements.
摘要翻译：一种使用专用传输队列来实现数据消息到集群内的自适应“最近邻”节点的快速传输的系统和方法。在传输前面的数据元素期间，通信适配器硬件预取数据包描述符，并且与先前数据元素的传输并行执行用于下一个传输的建立。可以可选地使用等于通信硬件的高速缓存行大小的固定长度的数据元素来提供计算机存储器和通信硬件之间的优化传输。数据接收处理也可以被优化以识别和处理高速缓存行大小的数据元素。

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