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1. 发明申请

US20080281938A1 Selecting a master node in a multi-node computer system 审中-公开
标题翻译：在多节点计算机系统中选择主节点
公开(公告)号：US20080281938A1
公开(公告)日：2008-11-13
申请号：US11801494
申请日：2007-05-09
申请人： Vikram Rai , Alok Srivastava , Juan Tellez
发明人： Vikram Rai , Alok Srivastava , Juan Tellez
IPC分类号： G06F15/16
CPC分类号： G06F15/177
摘要： Selecting a master node in a multi-node computer system is described. Each node of the multi-node computer system selects a timeout value (e.g., randomly). Each node starts a timer, which is set to expire at the selected timeout value of its corresponding node. The node with the timer that expires earliest broadcasts an election message to the other nodes of the multi-node computer system, which informs the other nodes that the broadcasting node is a candidate for mastership over the multi-node computer system. The other nodes respond to the election message upon receiving it. In the absence of a refusal message from one or more of the other nodes, the candidate is established as master node in the multi-node computer system and wherein the other nodes function as slave nodes therein.
摘要翻译：描述在多节点计算机系统中选择主节点。多节点计算机系统的每个节点选择超时值（例如，随机）。每个节点启动一个定时器，该定时器设置为在其相应节点的选定超时值处有效。具有最早到期的定时器的节点向多节点计算机系统的其他节点广播选举消息，其通知其他节点广播节点是通过多节点计算机系统掌握的候选者。其他节点在接收到选举消息时对其进行响应。在没有来自一个或多个其他节点的拒绝消息的情况下，候选者被建立为多节点计算机系统中的主节点，并且其中其他节点用作其中的从节点。

2. 发明授权

US07814360B2 Synchronizing cluster time to a master node with a faster clock 有权
标题翻译：将集群时间同步到具有更快时钟的主节点
公开(公告)号：US07814360B2
公开(公告)日：2010-10-12
申请号：US11698605
申请日：2007-01-25
申请人： Vikram Rai , Alok Srivastava
发明人： Vikram Rai , Alok Srivastava
IPC分类号： G06F1/12
CPC分类号： H04J3/0641 , H04L69/28
摘要： Synchronizing cluster time is described. Times of one or more nodes in the cluster to a master node of the cluster are synchronized. It is discovered that a node of a cluster has a clock time that is ahead of a master clock time of the master node. In response to discovering the node with the clock time ahead of the master clock time, the master node is replaced with the node ahead thereof in time, which thus becomes a new master node. The clock times of the cluster nodes are synchronized with the clock time of the new master node.
摘要翻译：描述了同步群集时间。集群中的一个或多个节点到集群的主节点的时间同步。发现集群的节点具有在主节点的主时钟时间之前的时钟时间。响应于发现时钟时间超过主时钟时间的节点，主节点被及时地被其前面的节点替换，从而成为新的主节点。集群节点的时钟时间与新主节点的时钟时间同步。

3. 发明申请

US20080183894A1 Synchronizing cluster time 有权
标题翻译：同步群集时间
公开(公告)号：US20080183894A1
公开(公告)日：2008-07-31
申请号：US11698605
申请日：2007-01-25
申请人： Vikram Rai , Alok Srivastava
发明人： Vikram Rai , Alok Srivastava
IPC分类号： G06F15/16 , G06F1/12
CPC分类号： H04J3/0641 , H04L69/28
摘要： Synchronizing cluster time is described. Times of one or more nodes in the cluster to a master node of the cluster are synchronized. It is discovered that a node of a cluster has a clock time that is ahead of a master clock time of the master node. In response to discovering the node with the clock time ahead of the master clock time, the master node is replaced with the node ahead thereof in time, which thus becomes a new master node. The clock times of the cluster nodes are synchronized with the clock time of the new master node.
摘要翻译：描述了同步群集时间。集群中的一个或多个节点到集群的主节点的时间同步。发现集群的节点具有在主节点的主时钟时间之前的时钟时间。响应于发现时钟时间超过主时钟时间的节点，主节点被及时地被其前面的节点替换，从而成为新的主节点。集群节点的时钟时间与新主节点的时钟时间同步。

4. 发明授权

US08169856B2 Time synchronization in cluster systems 有权
标题翻译：集群系统中的时间同步
公开(公告)号：US08169856B2
公开(公告)日：2012-05-01
申请号：US12258344
申请日：2008-10-24
申请人： Vikram Rai , Alok Srivastava , Angelo Pruscino , Sameer Joshi
发明人： Vikram Rai , Alok Srivastava , Angelo Pruscino , Sameer Joshi
IPC分类号： G04C13/00 , G04C11/02 , H04L7/00 , G06F15/16
CPC分类号： G06F1/12 , H04J3/0667
摘要： Techniques are described herein for synchronizing cluster time. According to one technique, a master node is appointed in a cluster. Other “slave” nodes periodically synchronize their clocks with the master node. To synchronize its clock with the master node, a slave node sends a timestamped message to the master node, which also timestamps the message and sends the message back to the slave node, which then timestamps the message again. Based on the timestamps, the slave node is able to determine the difference between the master node's clock's time and slave node's clock's time, compensating for the message travel time between master node and slave node. Depending on various circumstances, and based on the determined difference, the slave node adjusts its clock so that the time indicated by the slave node's clock at least begins to approach more closely the time indicated by the master node's clock.
摘要翻译：这里描述了用于同步集群时间的技术。根据一种技术，在簇中指定主节点。其他“从”节点周期性地将其时钟与主节点同步。为了将其时钟与主节点同步，从节点向主节点发送时间戳消息，主节点还对消息进行时间戳，并将消息发送回从节点，从节点再次对消息进行时间戳。基于时间戳，从节点能够确定主节点的时钟和从节点的时钟时间之间的差异，从而补偿主节点和从节点之间的消息传播时间。根据各种情况，并且根据所确定的差异，从节点调整其时钟，使得从节点的时钟指示的时间至少开始接近主节点时钟指示的时间。

5. 发明申请

US20100103781A1 TIME SYNCHRONIZATION IN CLUSTER SYSTEMS 有权
标题翻译：群集系统中的时间同步
公开(公告)号：US20100103781A1
公开(公告)日：2010-04-29
申请号：US12258344
申请日：2008-10-24
申请人： Vikram Rai , Alok Srivastava , Angelo Pruscino , Sameer Joshi
发明人： Vikram Rai , Alok Srivastava , Angelo Pruscino , Sameer Joshi
IPC分类号： G04C11/04
CPC分类号： G06F1/12 , H04J3/0667
摘要： Techniques are described herein for synchronizing cluster time. According to one technique, a master node is appointed in a cluster. Other “slave” nodes periodically synchronize their clocks with the master node. To synchronize its clock with the master node, a slave node sends a timestamped message to the master node, which also timestamps the message and sends the message back to the slave node, which then timestamps the message again. Based on the timestamps, the slave node is able to determine the difference between the master node's clock's time and slave node's clock's time, compensating for the message travel time between master node and slave node. Depending on various circumstances, and based on the determined difference, the slave node adjusts its clock so that the time indicated by the slave node's clock at least begins to approach more closely the time indicated by the master node's clock.
摘要翻译：这里描述了用于同步集群时间的技术。根据一种技术，在簇中指定主节点。其他“从”节点周期性地将其时钟与主节点同步。为了将其时钟与主节点同步，从节点向主节点发送时间戳消息，主节点还对消息进行时间戳，并将消息发送回从节点，从节点再次对消息进行时间戳。基于时间戳，从节点能够确定主节点的时钟和从节点的时钟时间之间的差异，从而补偿主节点和从节点之间的消息传播时间。根据各种情况，根据确定的差异，从节点调整其时钟，使从节点的时钟指示的时间至少开始接近主节点时钟指示的时间。

6. 发明申请

US20090217282A1 PREDICTING CPU AVAILABILITY FOR SHORT TO MEDIUM TIME FRAMES ON TIME SHARED SYSTEMS 审中-公开
标题翻译：预计CPU可用性对于中间时间框架在时间分配系统上
公开(公告)号：US20090217282A1
公开(公告)日：2009-08-27
申请号：US12037233
申请日：2008-02-26
申请人： Vikram RAI , Alok Srivastava , Angelo Pruscino , Sameer Joshi , Sunil Kumar , Sriram Sankaran , Joy Mukherjee
发明人： Vikram RAI , Alok Srivastava , Angelo Pruscino , Sameer Joshi , Sunil Kumar , Sriram Sankaran , Joy Mukherjee
IPC分类号： G06F9/50
CPC分类号： G06F11/3452 , G06F11/3409
摘要： A computer implemented CPU utilization prediction technique is provided. CPU utilization prediction is implemented described in continuous time as an auto-regressive process of the first order. The technique used the inherent autocorrelation between successive CPU measurements. A specific auto-regression equation for predicting CPU utilization is provided. CPU utilization prediction is used in a computer cluster environment. In an implementation, CPU utilization percentage values are used by a scheduler service to manage workload or the distribution of requests over a vast number of CPUs.
摘要翻译：提供了计算机实现的CPU利用预测技术。 CPU利用率预测在连续时间内被实现为一阶自动回归过程。该技术使用连续CPU测量之间的固有自相关性。提供了一种用于预测CPU利用率的特定自回归方程。在计算机集群环境中使用CPU利用率预测。在实现中，调度程序服务使用CPU利用率百分比值来管理工作负载或通过大量CPU分配请求。

7. 发明授权

US08903846B2 Method and apparatus for integrating data from external sources into a database system 有权
标题翻译：将数据从外部数据源整合到数据库系统中的方法和装置
公开(公告)号：US08903846B2
公开(公告)日：2014-12-02
申请号：US10798545
申请日：2004-03-11
申请人： Alok Srivastava
发明人： Alok Srivastava
IPC分类号： G06F7/00 , G06F17/30
CPC分类号： G06F17/30557 , G06F17/30342
摘要： Techniques used in a relational database system for defining subclasses of built-in classes and thereby achieving columns in database tables which contain polymorphic objects of the built-in classes. The methods for the subclasses are contained in named packages. A table in the database system's schema relates the package name to a storage location managed by the relational database system that contains the compiled code for the package. When a method from the package is invoked, a dynamic linker uses the name and the table to locate the compiled code and then executes the compiled code. One thing that can be done with subclasses is to use a database system to automatically connect a Web user with a server of streaming data. The connection thus established is made by the server of streaming data to the Web user and thus bypasses the database system.
摘要翻译：在关系数据库系统中使用的技术，用于定义内置类的子类，从而实现包含内置类的多态对象的数据库表中的列。子类的方法包含在命名的包中。数据库系统架构中的表将包名称与关系数据库系统管理的存储位置相关联，该存储位置包含该包的编译代码。当调用来自包的方法时，动态链接器使用名称和表来定位编译的代码，然后执行编译的代码。可以用子类完成的一件事是使用数据库系统来自动连接Web用户与流数据的服务器。由此建立的连接由流数据服务器发送给Web用户，从而绕过数据库系统。

8. 发明授权

US08847639B1 Waveform generator 有权
标题翻译：波形发生器
公开(公告)号：US08847639B1
公开(公告)日：2014-09-30
申请号：US14141466
申请日：2013-12-27
申请人： Alok Srivastava , Shrestha Priya
发明人： Alok Srivastava , Shrestha Priya
IPC分类号： H03B28/00 , H04L7/04 , H04L7/00
CPC分类号： G06F1/0321
摘要： A waveform generator for providing an analog output signal to a target device includes a look-up-table (LUT) that stores a plurality of binary address values and a digital-to-analog converter (DAC) that generates the analog output signal. The waveform generator receives an input trigger signal from the target device when the target device is ready to receive the analog output signal. The waveform generator generates a synchronized input trigger signal and aligns the analog output signal with the synchronized input trigger signal by reloading the LUT with a binary address value of zero.
摘要翻译：用于向目标设备提供模拟输出信号的波形发生器包括存储多个二进制地址值的查找表（LUT）和产生模拟输出信号的数模转换器（DAC）。当目标设备准备好接收模拟输出信号时，波形发生器从目标设备接收输入触发信号。波形发生器产生同步输入触发信号，并通过以二进制地址值为零重新加载LUT，将模拟输出信号与同步输入触发信号对准。

9. 发明授权

US08588082B2 Network testing using control plane and data plane convergence 有权
标题翻译：网络测试采用控制平面和数据平面融合
公开(公告)号：US08588082B2
公开(公告)日：2013-11-19
申请号：US12565412
申请日：2009-09-23
申请人： Noah Gintis , Alok Srivastava , Victor Alston , Dean Lee
发明人： Noah Gintis , Alok Srivastava , Victor Alston , Dean Lee
IPC分类号： H04J1/16
CPC分类号： H04L43/50
摘要： There is disclosed a system and method for implementing a control plane/data plane test to evaluate the performance of a device under test upon the occurrence of a critical event. The method may be performed by a network testing system.
摘要翻译：公开了一种用于实现控制平面/数据平面测试以在发生关键事件时评估被测设备的性能的系统和方法。该方法可以由网络测试系统执行。

10. 发明授权

US08510796B2 Method for application-to-application authentication via delegation 有权
标题翻译：通过委托进行应用程序到应用程序认证的方法
公开(公告)号：US08510796B2
公开(公告)日：2013-08-13
申请号：US12020203
申请日：2008-01-25
申请人： Alok Srivastava , Rafiul Ahad
发明人： Alok Srivastava , Rafiul Ahad
IPC分类号： G06F7/04
CPC分类号： G06F21/6218 , G06Q10/06
摘要： Apparatus, methods, and computer program products are disclosed that present a delegated-right to a delegation system by a service-application provisioned with the delegation system. The delegated-right enables the service-application to perform an operation/access on behalf of a delegator-user. The method then attempts to perform the operation/access.
摘要翻译：披露了通过配备有授权系统的服务应用程序呈现授权系统的委托权的装置，方法和计算机程序产品。委托权允许服务应用程序代表委托人 - 用户执行操作/访问。该方法然后尝试执行操作/访问。

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