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    • 2. 发明授权
    • Bus access moderation system
    • 总线访问管理系统
    • US07962677B2
    • 2011-06-14
    • US12173211
    • 2008-07-15
    • William A. MaronDiane Garza FlemmingGhadir Robert GholamiMysore Sathyanarayana SrinivasOctavian Florin Herescu
    • William A. MaronDiane Garza FlemmingGhadir Robert GholamiMysore Sathyanarayana SrinivasOctavian Florin Herescu
    • G06F13/00
    • G06F9/485G06F9/4881
    • A method, programmed medium and system are provided in which system bus traffic is moderated with real-time data. The Operating System (OS) is enabled to get information from the firmware (FW) to determine if a resource threshold has been reached. This is accomplished by generating an interrupt to flag the OS when a bus request retry rate has reached a predetermined number. The system firmware plays an integral role in this mechanism, and should be interpreted as a general term which could also include a hypervisor technology. The system firmware will report the bus request retry rate to the operating system by way of, for example, a firmware-generated interrupt. The OS may have something similar to a kernel daemon/service running to intercept the interrupt notice. In the simplest case, the daemon/service will determine if the threshold has been met based on the feedback from the firmware. If so, it will generate a system call that will moderate traffic with an operating system tunable. In one example, the number of simultaneous multithreading (SMT) threads per core will be reduced using a system call. This effectively throttles back the amount of logical threads per core and effectively alleviates the bus request saturation.
    • 提供了一种方法,编程介质和系统,其中系统总线流量由实时数据调节。 操作系统(OS)能够从固件(FW)获取信息,以确定是否已达到资源阈值。 这通过在总线请求重试速率达到预定数量时产生中断来标记OS来实现。 系统固件在此机制中起着不可或缺的作用,应该被解释为一个通用术语,也可以包括管理程序技术。 系统固件将通过例如固件产生的中断来向总线请求重试率报告给操作系统。 操作系统可能与内核守护程序/服务类似,以拦截中断通知。 在最简单的情况下,守护程序/服务将根据固件的反馈来确定阈值是否得到满足。 如果是这样,它将生成一个系统调用,以便通过操作系统可调整来调节流量。 在一个示例中,使用系统调用将减少每个内核的同时多线程(SMT)线程数。 这有效地节省了每个内核的逻辑线程数量,并有效地缓解了总线请求饱和度。
    • 3. 发明申请
    • BUS ACCESS MODERATION SYSTEM
    • 总线访问调制系统
    • US20100017551A1
    • 2010-01-21
    • US12173211
    • 2008-07-15
    • William A. MaronDiane Garza FlemmingGhadir Robert GholamiMysore Sathyanarayana SrinivasOctavian Florin Herescu
    • William A. MaronDiane Garza FlemmingGhadir Robert GholamiMysore Sathyanarayana SrinivasOctavian Florin Herescu
    • G06F13/14
    • G06F9/485G06F9/4881
    • A method, programmed medium and system are provided in which system bus traffic is moderated with real-time data. The Operating System (OS) is enabled to get information from the firmware (FW) to determine if a resource threshold has been reached. This is accomplished by generating an interrupt to flag the OS when a bus request retry rate has reached a predetermined number. The system firmware plays an integral role in this mechanism, and should be interpreted as a general term which could also include a hypervisor technology. The system firmware will report the bus request retry rate to the operating system by way of, for example, a firmware-generated interrupt. The OS may have something similar to a kernel daemon/service running to intercept the interrupt notice. In the simplest case, the daemon/service will determine if the threshold has been met based on the feedback from the firmware. If so, it will generate a system call that will moderate traffic with an operating system tunable. In one example, the number of simultaneous multithreading (SMT) threads per core will be reduced using a system call. This effectively throttles back the amount of logical threads per core and effectively alleviates the bus request saturation.
    • 提供了一种方法,编程介质和系统,其中系统总线流量由实时数据调节。 操作系统(OS)能够从固件(FW)获取信息,以确定是否已达到资源阈值。 这通过在总线请求重试速率达到预定数量时产生中断来标记OS来实现。 系统固件在此机制中起着不可或缺的作用,应该被解释为一个通用术语,也可以包括管理程序技术。 系统固件将通过例如固件产生的中断来向总线请求重试率报告给操作系统。 操作系统可能与内核守护程序/服务类似,以拦截中断通知。 在最简单的情况下,守护程序/服务将根据固件的反馈来确定阈值是否得到满足。 如果是这样,它将生成一个系统调用,以便通过操作系统可调整来调节流量。 在一个示例中,使用系统调用将减少每个内核的同时多线程(SMT)线程数。 这有效地节省了每个内核的逻辑线程数量,并有效地缓解了总线请求饱和度。
    • 6. 发明授权
    • Active accelerated discharge of a capacitive system
    • 电容系统的主动加速放电
    • US06182230B2
    • 2001-01-30
    • US09165959
    • 1998-10-02
    • Ghadir Robert GholamiKhuong Huu Pham
    • Ghadir Robert GholamiKhuong Huu Pham
    • G06F126
    • G06F1/30
    • An active circuit for rapidly discharging stored energy in a capacitive system. The circuit is comprised of a variable impedance circuit, a voltage detector, and a time delay circuit. The variable impedance circuit includes a variable impedance output path configured to be connected between a Vcc bus of the capacitive system and ground. The voltage detector circuit includes an input coupled to the Vcc bus and an output connected to an input of the variable impedance circuit. The voltage detector circuit is configured to maintain the variable impedance output path in a high impedance condition while the Vcc voltage remains above a predetermined minimum value. The time delay circuit is coupled to the input of the variable impedance circuit and configured to maintain the variable impedance output path in a low impedance condition for a duration after the voltage of the Vcc bus drops below the predetermined minimum.
    • 用于在容性系统中快速放电存储的能量的有源电路。 该电路由可变阻抗电路,电压检测器和时间延迟电路组成。 可变阻抗电路包括可变阻抗输出路径,其被配置为连接在电容系统的Vcc总线与地之间。 电压检测器电路包括耦合到Vcc总线的输入端和连接到可变阻抗电路的输入端的输出端。 电压检测器电路被配置为将可变阻抗输出路径保持在高阻抗状态,同时Vcc电压保持在预定的最小值以上。 时间延迟电路耦合到可变阻抗电路的输入,并被配置为在Vcc总线的电压下降到预定最小值之前的持续时间内将可变阻抗输出路径保持在低阻抗状态。
    • 8. 发明授权
    • Method for determining if a delay required before proceeding with the detected interrupt and exiting the interrupt without clearing the interrupt
    • 确定在执行检测到的中断和退出中断之前是否需要延迟而不清除中断的方法
    • US06629252B1
    • 2003-09-30
    • US09428405
    • 1999-10-28
    • Ghadir Robert GholamiChetan MehtaJohn Daniel Upton
    • Ghadir Robert GholamiChetan MehtaJohn Daniel Upton
    • G06F1342
    • G06F9/4812G06F13/24
    • A method and system for servicing an interrupt is presented. An interrupt handler associated with a detected interrupt is invoked, and a determination is made as to whether to instantiate a delay before further servicing of the detected interrupt. If a delay is neccesary before the detected may be fully serviced, a delay counter is initialized to a first predetermined value. The interrupt handler then exits without fully servicing the detected interrupt. During subsequent invocations, the interrupt handler decrements the delay counter and checks whether the delay counter has reached a second predetermined value. The interrupt handler is repeatedly invoked while the interrupt remains pending and while the delay counter does not equal the second predetermined value, the interrupt handler may then fully service the interrupt and clear the interrupt.
    • 介绍了一种用于维护中断的方法和系统。 调用与检测到的中断相关联的中断处理程序,并且确定是否在检测到的中断的进一步服务之前实例化延迟。 如果在检测到的可能被完全服务之前需要延迟,则将延迟计数器初始化为第一预定值。 然后中断处理程序退出而不完全检查检测到的中断。 在随后的调用期间,中断处理器递减延迟计数器并检查延迟计数器是否已达到第二预定值。 中断处理程序在中断保持挂起的同时被重复调用,而延迟计数器不等于第二个预定值,则中断处理程序可以完全服务中断并清除中断。
    • 9. 发明授权
    • Circuit for rapidly charging a system net
    • 电路快速充电系统网
    • US06297678B1
    • 2001-10-02
    • US09428402
    • 1999-10-28
    • Ghadir Robert Gholami
    • Ghadir Robert Gholami
    • H03K302
    • H03K19/09429H03K19/01714
    • An electronic system, precharge circuit, and method for precharging system net. The system includes a plurality of devices. Each of the devices includes at least one I/O pin driven by an driver circuit. The system further includes a system net connected to at least one of the I/O pins of each of the plurality of devices. A precharge circuit suitable for connecting to the system net is provided. The precharge circuit includes a sense stage and a charging stage. The sense stage is configured to receive the system net voltage as an input and adapted to sense a system net voltage transition. The charging stage is connected to the system net and configured to receive an output of the sense stage. The sense stage is configured to activate the charging stage in response to detecting a system net voltage transition. The charging stage, upon activation, is configured to provide a current path between a supply voltage and the system net for a specified duration. After the specified duration, the current path is disabled.
    • 一种电子系统,预充电电路和系统网预充电方法。 该系统包括多个装置。 每个设备包括由驱动器电路驱动的至少一个I / O引脚。 该系统还包括连接到多个设备中的每一个的至少一个I / O引脚的系统网络。 提供了适于连接到系统网络的预充电电路。 预充电电路包括感测级和充电级。 感测级被配置为接收系统净电压作为输入并且适于感测系统净电压转换。 充电阶段连接到系统网络,并配置为接收感测级的输出。 感测级被配置为响应于检测到系统净电压转换来激活充电阶段。 充电阶段在激活时被配置成在电源电压和系统网之间提供指定持续时间的电流路径。 在指定的持续时间后,当前路径被禁用。