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    • 38. 发明申请
    • Managing Power in a Parallel Computer
    • 在并行计算机中管理电源
    • US20090049317A1
    • 2009-02-19
    • US11840743
    • 2007-08-17
    • Alan GaraThomas M. GoodingTodd A. InglettThomas A. LiebschThomas E. Musta
    • Alan GaraThomas M. GoodingTodd A. InglettThomas A. LiebschThomas E. Musta
    • G06F1/32
    • G06F1/263G06F1/3203
    • Managing power in a parallel computer, the parallel computer including a power supply and a plurality of compute nodes, the plurality of compute nodes powered by the power supply through a plurality of DC-DC converters, each DC-DC converter supplying current to an assigned group of compute nodes, each DC-DC converter having a current sensor. Embodiments include monitoring, by the current sensor, an amount of current supplied by that DC-DC converter to its assigned group of compute nodes; determining, by at least one DC-DC converter, that the amount of current supplied is greater than a predefined threshold value; sending, by the at least one DC-DC converter to the plurality of compute nodes, a global interrupt, including notifying the plurality of compute nodes to reduce power consumption; and reducing, by the plurality of compute nodes in accordance with power consumption ratios, power consumption of the compute nodes.
    • 在并行计算机中管理并行计算机,并行计算机包括电源和多个计算节点,所述多个计算节点由电源通过多个DC-DC转换器供电,每个DC-DC转换器将电流提供给所分配的 一组计算节点,每个DC-DC转换器具有电流传感器。 实施例包括由电流传感器监测由该DC-DC转换器提供给其分配的计算节点组的电流量; 由至少一个DC-DC转换器确定所提供的电流量大于预定阈值; 由所述至少一个DC-DC转换器向所述多个计算节点发送全局中断,包括通知所述多个计算节点以减少功耗; 并且根据功耗比由所述多个计算节点减少所述计算节点的功率消耗。
    • 40. 发明授权
    • Heap/stack guard pages using a wakeup unit
    • 堆/堆栈保护页面使用唤醒单元
    • US08713294B2
    • 2014-04-29
    • US12696817
    • 2010-01-29
    • Thomas M. GoodingDavid L. SatterfieldBurkhard Steinmacher-Burow
    • Thomas M. GoodingDavid L. SatterfieldBurkhard Steinmacher-Burow
    • G06F15/00G06F7/38G06F9/00G06F9/44
    • G06F15/17381G06F9/30072
    • A method and system for providing a memory access check on a processor including the steps of detecting accesses to a memory device including level-1 cache using a wakeup unit. The method includes invalidating level-1 cache ranges corresponding to a guard page, and configuring a plurality of wakeup address compare (WAC) registers to allow access to selected WAC registers. The method selects one of the plurality of WAC registers, and sets up a WAC register related to the guard page. The method configures the wakeup unit to interrupt on access of the selected WAC register. The method detects access of the memory device using the wakeup unit when a guard page is violated. The method generates an interrupt to the core using the wakeup unit, and determines the source of the interrupt. The method detects the activated WAC registers assigned to the violated guard page, and initiates a response.
    • 一种用于在处理器上提供存储器访问检查的方法和系统,包括以下步骤:使用唤醒单元检测对包括一级高速缓存的存储设备的访问。 该方法包括使对应于保护页面的1级缓存范围失效,以及配置多个唤醒地址比较(WAC)寄存器以允许访问所选择的WAC寄存器。 该方法选择多个WAC寄存器中的一个,并建立与保护页相关的WAC寄存器。 该方法配置唤醒单元在所选WAC寄存器访问时中断。 当防护页被违反时,该方法使用唤醒单元检测存储设备的访问。 该方法使用唤醒单元为内核生成中断,并确定中断源。 该方法检测分配给违规保护页面的激活的WAC寄存器,并发起响应。