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    • 16. 发明授权
    • System for assigning and identifying devices on bus within predetermined
period of time without requiring host to do the assignment
    • 用于在预定时间段内在总线上分配和识别设备的系统,而不需要主机进行分配
    • US5544333A
    • 1996-08-06
    • US380473
    • 1995-01-30
    • Giles R. FrazierGary Y. Tsao
    • Giles R. FrazierGary Y. Tsao
    • G06F12/06G06F15/177G06F13/38
    • G06F9/4411G06F12/0669G06F15/177
    • In a computer system having multiple devices on a bus, a method for a first device on the bus to designate its own identifier including the steps of the first device transmitting on the bus a request for a device with a desired identifier to respond, determining that no device on the bus responds to the request, and upon such determination, designating the desired identifier to identify the first device to at least one of the multiple devices on the bus. In addition, in a computer system having multiple devices on a bus, a first device including apparatus for transmitting on the bus a request for a device with a desired identifier to respond, apparatus for determining that no device on the bus responds to the request, and apparatus for, upon such determination, designating the desired identifier to identify at least one of the first device to the multiple devices on the bus.
    • 在具有总线上的多个设备的计算机系统中,一种用于总线上的第一设备的方法来指定其自己的标识符,包括第一设备在总线上发送对具有所需标识符的设备的请求进行响应的步骤,确定 总线上的任何设备都不响应该请求,并且在这样的确定时,指定所需的标识符以将总线上的多个设备中的至少一个设备识别出第一设备。 此外,在具有总线上的多个设备的计算机系统中,第一设备包括用于在总线上发送对具有所需标识符进行响应的设备的请求的设备,用于确定总线上的设备不响应​​该请求的设备, 以及用于在所述确定时指定所述期望标识符以将所述第一设备中的至少一个识别到所述总线上的所述多个设备的装置。
    • 18. 发明授权
    • Hardware performance-monitoring facility usage after context swaps
    • 情景交换后的硬件性能监控设备使用情况
    • US09342432B2
    • 2016-05-17
    • US13313557
    • 2011-12-07
    • Giles R. FrazierBrian R. Mestan
    • Giles R. FrazierBrian R. Mestan
    • G06F11/34
    • G06F11/348G06F2201/865
    • A performance monitoring technique provides task-switch immune operation without requiring storage and retrieval of the performance monitor state when a task switch occurs and provides accurate performance monitoring information. When a hypervisor signals that a task is being resumed and the application privilege level has been entered, it provides an indication, which starts a delay timer. The delay timer is resettable in case a predetermined time period has not elapsed when the next task switch occurs. After the delay timer expires, analysis of the performance monitor measurements is resumed, which prevents an initial state, a state due to execution of the operating system or hypervisor, or a state remaining from a previous task from corrupting the performance monitoring results. The performance monitor may be or include an execution trace unit that collects branch information in a current program execution trace.
    • 性能监控技术提供任务切换免疫操作,而不需要在任务切换发生时存储和检索性能监视状态,并提供准确的性能监视信息。 当管理程序发出信号指示正在恢复任务并且已经输入了应用程序权限级别时,它提供指示,其启动延迟定时器。 在发生下一任务切换的情况下,在没有经过预定时间段的情况下,可以将延迟定时器复位。 在延迟定时器到期后,恢复对性能监视器测量的分析,这阻止了初始状态,由于执行操作系统或管理程序的状态,或者从前一任务中剩余的状态破坏性能监视结果。 性能监视器可以是或包括在当前程序执行跟踪中收集分支信息的执行跟踪单元。
    • 19. 发明授权
    • Providing logical partions with hardware-thread specific information reflective of exclusive use of a processor core
    • 提供逻辑分支与反映独家使用处理器核心的硬件线程特定信息
    • US09069598B2
    • 2015-06-30
    • US13345002
    • 2012-01-06
    • Giles R. FrazierBruce MealyNaresh Nayar
    • Giles R. FrazierBruce MealyNaresh Nayar
    • G06F9/455G06F9/38
    • G06F21/6218G06F9/3012G06F9/3851G06F9/45541G06F9/45558G06F2009/45587
    • Techniques for simulating exclusive use of a processor core amongst multiple logical partitions (LPARs) include providing hardware thread-dependent status information in response to access requests by the LPARs that is reflective of exclusive use of the processor by the LPAR accessing the hardware thread-dependent information. The information returned in response to the access requests is transformed if the requestor is a program executing at a privilege level lower than the hypervisor privilege level, so that each logical partition views the processor as though it has exclusive use of the processor. The techniques may be implemented by a logical circuit block within the processor core that transforms the hardware thread-specific information to a logical representation of the hardware thread-specific information or the transformation may be performed by program instructions of an interrupt handler that traps access to the physical register containing the information.
    • 用于模拟在多个逻辑分区(LPAR)中独占使用处理器核心的技术包括提供响应于LPAR的访问请求的硬件线程依赖状态信息,所述LPAR反映了LPAR访问硬件线程相关的独占使用处理器 信息。 如果请求者是在低于管理程序权限级别的特权级别下执行的程序,则转换响应于访问请求而返回的信息,使得每个逻辑分区将处理器视为处理器的独占使用。 这些技术可以由处理器核心内的逻辑电路块来实现,其将硬件线程特定信息转换为硬件线程特定信息的逻辑表示,或者可以通过将访问陷阱的中断处理程序的程序指令执行 物理寄存器包含信息。