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。

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。

公开(公告)号：US20060075067A1

公开(公告)日：2006-04-06

申请号：US11017359

申请日：2004-12-20

申请人： Robert Blackmore ,  Piyush Chaudhary ,  Jason Goscinski ,  Rama Govindaraju ,  Donald Grice ,  Peter Hochschild ,  John Houston ,  Chulho Kim ,  Steven Martin ,  Rajeev Sivaram ,  Hanhong Xue

发明人： Robert Blackmore ,  Piyush Chaudhary ,  Jason Goscinski ,  Rama Govindaraju ,  Donald Grice ,  Peter Hochschild ,  John Houston ,  Chulho Kim ,  Steven Martin ,  Rajeev Sivaram ,  Hanhong Xue

IPC分类号： G06F15/16

CPC分类号： H04L69/16 ,  G06F12/1081 ,  H04L69/166

摘要： In a multinode data processing system in which nodes exchange information over a network or through a switch, a structure and mechanism are provided which enables data packets to be sent and received in any order. Normally, if in-order transmission and receipt are required, then transmission over a single path is essential to insure proper reassembly. However, the present mechanism avoids this necessity and permits Remote Direct Memory Access (RDMA) operations to be carried out simultaneously over multiple paths. This provides a data striping mode of operation in which data transfers can be carried out much faster since packets of single or multiple RDMA messages can be portioned and transferred over several paths simultaneously, thus providing the ability to utilize the full system bandwidth that is available.

摘要翻译： 在节点通过网络交换信息或通过交换机交换信息的多节点数据处理系统中，提供了能够以任何顺序发送和接收数据分组的结构和机制。 通常，如果需要按顺序传输和接收，则通过单个路径的传输对于确保适当的重新组装是至关重要的。 然而，本机制避免了这种必要性，并且允许在多个路径上同时执行远程直接存储器访问（RDMA）操作。 这提供了数据条带化操作模式，其中数据传输可以执行得更快，因为单个或多个RDMA消息的分组可以同时分配和传输多个路径，从而提供利用可用的全部系统带宽的能力。

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.

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。

公开(公告)号：US20060045099A1

公开(公告)日：2006-03-02

申请号：US11017355

申请日：2004-12-20

申请人： Fu Chung Chang ,  Piyush Chaudhary ,  Jason Goscinski ,  John Houston ,  Steven Martin

发明人： Fu Chung Chang ,  Piyush Chaudhary ,  Jason Goscinski ,  John Houston ,  Steven Martin

IPC分类号： H04L12/56 ,  H04L12/28

CPC分类号： H04L69/16 ,  H04L69/166

摘要： In a multinode data processing system in which nodes exchange information over a network or through a switch, the mechanism which enables out-of-order data transfer via Remote Direct Memory Access (RDMA) also provides a corresponding ability to carry out broadcast operations, multicast operations, third party operations and conditional RDMA operations. In a broadcast operation a source node transfers data packets in RDMA fashion to a plurality of destination nodes. Multicast operation works similarly except that distribution is selective. In third party operations a single central node in a cluster or network manages the transfer of data in RDMA fashion between other nodes or creates a mechanism for allowing a directed distribution of data between nodes. In conditional operation mode the transfer of data is conditioned upon one or more events occurring in either the source node or in the destination node.

摘要翻译： 在节点通过网络交换信息或通过交换机交换信息的多节点数据处理系统中，通过远程直接存储器访问（RDMA）实现无序数据传输的机制也提供了相应的能力来执行广播操作，组播 操作，第三方操作和有条件的RDMA操作。 在广播操作中，源节点以RDMA方式将数据分组传送到多个目的节点。 组播操作的工作方式类似，除了分发是有选择性的。 在第三方操作中，集群或网络中的单个中央节点以RDMA方式在其他节点之间管理数据传输，或者创建一种允许在节点之间定向分发数据的机制。 在条件操作模式中，数据的传输是在源节点或目标节点中发生的一个或多个事件的条件。

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。

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。

公开(公告)号：US20060034167A1

公开(公告)日：2006-02-16

申请号：US10903322

申请日：2004-07-30

申请人： Donald Grice ,  Dominique Heger ,  Steven Martin ,  Johannes Sayre ,  Amor Scheftel ,  Appoloniel Tankeh

发明人： Donald Grice ,  Dominique Heger ,  Steven Martin ,  Johannes Sayre ,  Amor Scheftel ,  Appoloniel Tankeh

IPC分类号： H04L12/26

CPC分类号： G06F15/17375

摘要： A system and method are provided for facilitating zero-copy communications between computing systems of a group of computing systems. The method includes allocating, in a first computing system of the group of computing systems, a pool of privileged communication resources from a privileged resource controller to a communications controller. The communications controller designates the privileged communication resources from the pool for use in handling individual ones of the zero-copy communications, thereby avoiding a requirement to obtain individual ones of the privileged resources from the owner of the privileged resources at setup time for each zero-copy communication.

摘要翻译： 提供了一种用于促进一组计算系统的计算系统之间的零复制通信的系统和方法。 该方法包括在该组计算系统的第一计算系统中将特权通信资源池从特权资源控制器分配给通信控制器。 通信控制器从池中指定用于处理零拷贝通信中的各个的特权通信资源，从而避免在建立时针对每个零拷贝通信从特权资源的所有者获得各个特权资源的要求， 复制通讯。

公开(公告)号：US20060059242A1

公开(公告)日：2006-03-16

申请号：US11017570

申请日：2004-12-20

申请人： Robert Blackmore ,  Steven Martin

发明人： Robert Blackmore ,  Steven Martin

IPC分类号： G06F15/16

CPC分类号： G06F12/1081

摘要： A method is provided for operating a communications adapter employed in a multinode data processing system in a fashion which enhances the performance of remote direct memory access data transfers. The system is provided with pointers and a table which are employed to determine whether or not an address which has been supplied for the transfer has already been mapped to a real address at the source or destination node. The table is also preferably provided with counters which can be incremented or decremented to enable the use of least recently used mechanisms at the upper level protocol layers to more efficiently control the setting and resetting of table entries.