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    • 3. 发明授权
    • State machine controlled dynamic distributed computing
    • 状态机控制动态分布式计算
    • US08984327B1
    • 2015-03-17
    • US13721902
    • 2012-12-20
    • Parveen JainSatya RamachandranSushil ThomasAnupam Singh
    • Parveen JainSatya RamachandranSushil ThomasAnupam Singh
    • G06F11/00H04L12/24
    • H04L41/5025H04L41/5009H04L41/5054H04L43/16H04L67/10H04L67/16
    • A computer readable storage medium with executable instructions specifies the execution of a state machine operating across a set of computing nodes in a distributed computing system. The executable instructions execute a set of operators, where the execution of each operator is under the control of a state machine that periodically invokes pause control states to pause the execution of an operator in response to a violation of a service level agreement specifying an operating condition threshold within the distributed computing system. Partitions of input data are formed that are worked on independently within the distributed computing system. A set of data batches associated with the input data is processed. Data partition control states to process the partitions associated with the set of data batches are specified. Key control states to process a set of keys associated with a data partition of the partitions are defined.
    • 具有可执行指令的计算机可读存储介质指定在分布式计算系统中跨越一组计算节点操作的状态机的执行。 可执行指令执行一组运算符,其中每个运算符的执行在状态机的控制下,周期性地调用暂停控制状态来暂停操作者的执行以响应违反指定操作条件的服务级别协议 分布式计算系统内的阈值。 形成了在分布式计算系统内独立工作的输入数据分区。 处理与输入数据相关联的一组数据批处理。 指定用于处理与该组数据批次关联的分区的数据分区控制状态。 定义用于处理与分区的数据分区相关联的一组密钥的密钥控制状态。
    • 6. 发明授权
    • State machine controlled dynamic distributed computing
    • 状态机控制动态分布式计算
    • US08090974B1
    • 2012-01-03
    • US12366958
    • 2009-02-06
    • Parveen JainSatya RamachandranSushil ThomasAnupam Singh
    • Parveen JainSatya RamachandranSushil ThomasAnupam Singh
    • G06F11/00
    • H04L41/5025H04L41/5009H04L41/5054H04L43/16H04L67/10H04L67/16
    • A computer readable storage medium with executable instructions specifies the execution of a state machine operating across a set of computing nodes in a distributed computing system. The executable instructions execute a set of operators, where the execution of each operator is under the control of a state machine that periodically invokes pause control states to pause the execution of an operator in response to a violation of a service level agreement specifying an operating condition threshold within the distributed computing system. Partitions of input data are formed that are worked on independently within the distributed computing system. A set of data batches associated with the input data is processed. Data partition control states to process the partitions associated with the set of data batches are specified. Key control states to process a set of keys associated with a data partition of the partitions are defined.
    • 具有可执行指令的计算机可读存储介质指定在分布式计算系统中跨越一组计算节点操作的状态机的执行。 可执行指令执行一组运算符,其中每个运算符的执行在状态机的控制下,周期性地调用暂停控制状态来暂停操作者的执行以响应违反指定操作条件的服务级别协议 分布式计算系统内的阈值。 形成了在分布式计算系统内独立工作的输入数据分区。 处理与输入数据相关联的一组数据批处理。 指定用于处理与该组数据批次关联的分区的数据分区控制状态。 定义用于处理与分区的数据分区相关联的一组密钥的密钥控制状态。
    • 8. 发明授权
    • Open loop cooling system and method for downhole tools
    • 开环冷却系统和井下工具的方法
    • US09256045B2
    • 2016-02-09
    • US13502547
    • 2009-11-04
    • Anupam Singh
    • Anupam Singh
    • G02B7/04G02B7/02H02K41/035E21B36/00G03B13/34
    • G02B7/04E21B36/001G02B7/023G02B7/026G03B13/34H02K33/02H02K41/0356H04N5/2254
    • A downhole tool (100) including an open loop cooling system (110) having a pressurized container (120) disposed within a tool string, and has a refrigerant (122). The cooling system further includes a tank (150) in fluid communication with the pressurized container (120), and a heat exchanger (160) associated with tank (150), where the heat exchanger exchanges heat between the refrigerant (122) and a downhole payload (164). The cooling system further includes a low pressure apparatus that creates a low pressure region proximate the pressurized container. The low pressure apparatus can include a venturi (180). The venturi has a drilling mud passage (188) therethrough, and drilling mud flowing through a convergence (186) creates a low pressure adjacent the tank (150).
    • 一种井下工具(100),其包括开放式冷却系统(110),其具有设置在工具列内的加压容器(120),并具有制冷剂(122)。 冷却系统还包括与加压容器(120)流体连通的罐(150)和与罐(150)相关联的热交换器(160),其中热交换器在制冷剂(122)和井下 有效载荷(164)。 冷却系统还包括低压设备,其在靠近加压容器的地方产生低压区域。 低压装置可以包括文丘里管(180)。 文氏管具有穿过其中的钻井泥浆通道(188),并且流过会聚(186)的钻井泥浆在储罐(150)附近产生低压。
    • 9. 发明申请
    • Hybrid optimization strategies in automatic SQL tuning
    • 自动SQL调优中的混合优化策略
    • US20100030758A1
    • 2010-02-04
    • US12221131
    • 2008-07-30
    • Peter BelknapKhaled YagoubKarl DiasBenoit DagevilleThierry CruanesAnupam Singh
    • Peter BelknapKhaled YagoubKarl DiasBenoit DagevilleThierry CruanesAnupam Singh
    • G06F17/30
    • G06F17/30463G06F17/30306G06F17/30471
    • Systems, methods, and other embodiments associated with hybrid optimization strategies in automatic SQL tuning are described. One example method includes receiving a first (e.g., cost-based) execution plan for a user structured query language statement (User SQL) from a first (e.g., cost-based) optimizer. The example method may also include receiving a second (e.g., rules-based) execution plan for the User SQL from a second, different (e.g., rules-based) query optimizer. The method may include identifying a preferred execution plan based on data produced by test executing the execution plans in a reproduced execution environment that reproduces at least a portion of an execution environment in which the user SQL runs. The method may also include controlling a database to execute the User SQL using the preferred execution plan.
    • 描述了与自动SQL调优中的混合优化策略相关联的系统,方法和其他实施例。 一个示例性方法包括从第一(例如基于成本的)优化器接收用户结构化查询语言语句(User SQL)的第一(例如基于成本的)执行计划。 示例性方法还可以包括从第二不同(例如,基于规则的)查询优化器接收针对用户SQL的第二(例如基于规则的)执行计划。 该方法可以包括基于在再现执行用户SQL运行的执行环境的至少一部分的再现执行环境中执行执行计划的测试产生的数据来识别优选执行计划。 该方法还可以包括控制数据库以使用优选的执行计划来执行User SQL。