SYSTEM AND METHOD FOR CALIBRATING A TOD CLOCK
    1.
    发明申请
    SYSTEM AND METHOD FOR CALIBRATING A TOD CLOCK 有权
    用于校准时钟的系统和方法

    公开(公告)号:US20090070618A1

    公开(公告)日:2009-03-12

    申请号:US12270179

    申请日:2008-11-13

    IPC分类号: G06F1/00

    摘要: A system, method and computer program product for calibrating a Time Of Day (TOD)-clock in a computing system node provided in a multi-node network. The network comprises an infrastructure of computing devices each having a physical clock providing a time base for executing operations that is stepped to a common oscillator. The system implements steps for obtaining samples of timing values of a computing device in the network, the values including a physical clock value maintained at that device and a TOD-offset value; computing an oscillator skew value from the samples; setting a fine steering rate value as equal to the opposite of the computed oscillator skew value; and, utilizing the fine steering rate value to adjust the physical clock value and correct for potential oscillator skew errors occurring in the oscillator crystal at the computing device.

    摘要翻译: 一种用于在多节点网络中提供的计算系统节点中校准时钟(TOD)时钟的系统,方法和计算机程序产品。 该网络包括计算设备的基础设施,每个设备具有提供用于执行步进到公共振荡器的操作的时基的物理时钟。 该系统实现用于获得网络中计算设备的定时值的采样的步骤,该值包括在该设备处保持的物理时钟值和TOD偏移值; 从样本计算振荡器偏移值; 将精细的转向率值设置为等于所计算的振荡器偏移值的相反; 并且利用精细转向率值来调整物理时钟值并校正在计算装置处发生在振荡器晶体中的潜在的振荡器偏斜误差。

    PERFORMING A PERFORM TIMING FACILITY FUNCTION INSTRUCTION FOR SYNCHRONIZING TOD CLOCKS
    3.
    发明申请
    PERFORMING A PERFORM TIMING FACILITY FUNCTION INSTRUCTION FOR SYNCHRONIZING TOD CLOCKS 有权
    执行同步时钟功能的功能指令同步时钟

    公开(公告)号:US20120173917A1

    公开(公告)日:2012-07-05

    申请号:US13402554

    申请日:2012-02-22

    IPC分类号: G06F1/04 G04C11/00

    CPC分类号: G06F1/14

    摘要: A system, method and computer program product for steering a time-of-day (TOD) clock for a computer system having a physical clock providing a time base for executing operations that is stepped to a common oscillator. The method includes receiving, at a processing unit, a request to change a clock steering rate used to control a TOD-clock offset value for the processing unit, the TOD-clock offset defined as a function of a start time (s), a base offset (b), and a steering rate (r). The unit schedules a next episode start time with which to update the TOD-clock offset value. After updating TOD-clock offset value (d) at the scheduled time, TOD-clock offset value is added to a physical-clock value (Tr) value to obtain a logical TOD-clock value (Tb), where the logical TOD-clock value is adjustable without adjusting a stepping rate of the oscillator.

    摘要翻译: 一种用于转向具有物理时钟的计算机系统的时钟(TOD)时钟的系统,方法和计算机程序产品,该物理时钟提供用于执行步进到公共振荡器的操作的时基。 该方法包括在处理单元处接收用于改变用于控制处理单元的TOD时钟偏移值的时钟转向速率的请求,定义为开始时间的函数的TOD时钟偏移量, 基本偏移(b)和转向率(r)。 该单元安排下一个开始时间来更新TOD时钟偏移值。 在预定时间更新TOD时钟偏移值(d)后,将TOD时钟偏移值加到物理时钟值(Tr)值,以获得逻辑TOD时钟值(Tb),其中逻辑TOD时钟 值可调节,而不需要调整振荡器的步进速率。

    Composition of Decimal Floating Point Data
    4.
    发明申请
    Composition of Decimal Floating Point Data 有权
    十进制浮点数据的组成

    公开(公告)号:US20120047190A1

    公开(公告)日:2012-02-23

    申请号:US13284125

    申请日:2011-10-28

    IPC分类号: G06F7/485 G06F7/483

    摘要: A decimal floating point finite number in a decimal floating point format is composed from the number in a different format. A decimal floating point format includes fields to hold information relating to the sign, exponent and significand of the decimal floating point finite number. Other decimal floating point data, including infinities and NaNs (not a number), are also composed. Decimal floating point data are also decomposed from the decimal floating point format to a different format.

    摘要翻译: 十进制浮点格式的十进制浮点有限数字由不同格式的数字组成。 十进制浮点格式包括用于保存与十进制浮点有限数字的符号,指数和有效数相关的信息的字段。 其他十进制浮点数据也包括无限和无数(不是数字)。 十进制浮点数据也从十进制浮点格式分解成不同的格式。

    SHIFT SIGNIFICAND OF DECIMAL FLOATING POINT DATA
    5.
    发明申请
    SHIFT SIGNIFICAND OF DECIMAL FLOATING POINT DATA 有权
    十进制浮点数据的移动意义

    公开(公告)号:US20110213818A1

    公开(公告)日:2011-09-01

    申请号:US13106188

    申请日:2011-05-12

    IPC分类号: G06F5/01

    摘要: A decimal floating point finite number in a decimal floating point format is composed from the number in a different format. A decimal floating point format includes fields to hold information relating to the sign, exponent and significand of the decimal floating point finite number. Other decimal floating point data, including infinities and NaNs (not a number), are also composed. Decimal floating point data are also decomposed from the decimal floating point format to a different format. For composition and decomposition, one or more instructions may be employed, including a shift significand instruction.

    摘要翻译: 十进制浮点格式的十进制浮点有限数字由不同格式的数字组成。 十进制浮点格式包括用于保存与十进制浮点有限数字的符号,指数和有效数相关的信息的字段。 其他十进制浮点数据也包括无限和无数(不是数字)。 十进制浮点数据也从十进制浮点格式分解成不同的格式。 对于组合和分解,可以使用一个或多个指令,包括移位有效指令。

    Perform Floating Point Operation Instruction
    6.
    发明申请
    Perform Floating Point Operation Instruction 有权
    执行浮点运算指令

    公开(公告)号:US20090094441A1

    公开(公告)日:2009-04-09

    申请号:US11868605

    申请日:2007-10-08

    IPC分类号: G06F9/302

    摘要: A method and system are disclosed for executing a machine instruction in a central processing unit. The method comprise the steps of obtaining a perform floating-point operation instruction; obtaining a test bit; and determining a value of the test bit. If the test bit has a first value, (a) a specified floating-point operation function is performed, and (b) a condition, code is set to a value determined by said specified function. If the test bit has a second value, (c) a check is made to determine if said specified function is valid and installed on the machine, (d) if said specified function is valid and installed on the machine, the condition code is set to one code value, and (c) if said specified function is either not valid or not installed on the machine, the condition code is set to a second code value.

    摘要翻译: 公开了用于在中央处理单元中执行机器指令的方法和系统。 该方法包括以下步骤:获得执行浮点运算指令; 获得一个测试位; 并确定测试位的值。 如果测试位具有第一值,则(a)执行指定的浮点运算功能,并且(b)条件将代码设置为由所述指定函数确定的值。 如果测试位具有第二个值,(c)进行检查以确定所述指定的功能是否有效并且安装在机器上,(d)如果所述指定的功能是有效的并且安装在机器上,则设置条件代码 到一个代码值,以及(c)如果所述指定的功能无效或未安装在机器上,则条件代码被设置为第二代码值。

    PERFORMING A PERFORM TIMING FACILITY FUNCTION INSTRUCTION FOR SYCHRONIZING TOD CLOCKS
    7.
    发明申请
    PERFORMING A PERFORM TIMING FACILITY FUNCTION INSTRUCTION FOR SYCHRONIZING TOD CLOCKS 有权
    执行同步时钟功能的功能指令

    公开(公告)号:US20090300401A1

    公开(公告)日:2009-12-03

    申请号:US12540261

    申请日:2009-08-12

    IPC分类号: G06F1/12

    CPC分类号: G06F1/14

    摘要: A system, method and computer program product for performing a Perform Timing Facility (PTFF) instruction for steering a Time of Day (TOD) clock of the computer system for synchronizing the TOD clock with TOD clocks of other computer systems. The computer system comprises a memory; and, a processor in communications with the computer memory. The processor is capable of performing a PTFF instruction comprising: obtaining a function code specified in a first general register, the function code for identifying any one of a query function or a control function to be performed; obtaining, from a second general register, a memory address of a parameter block; responsive to the function code specifying a query function, storing timing information of the computer system in the parameter block according to the specified query function; responsive to the function code specifying a control function, using timing information obtained from the parameter block to perform the specified control function; and setting a condition code value indicating an outcome of the specified function.

    摘要翻译: 一种用于执行用于使TOD时钟与其他计算机系统的TOD时钟同步的计算机系统的时间(TOD)时钟的执行定时设备(PTFF)指令的系统,方法和计算机程序产品。 计算机系统包括存储器; 以及与计算机存储器通信的处理器。 处理器能够执行PTFF指令,包括:获得在第一通用寄存器中指定的功能代码,用于识别要执行的查询功能或控制功能中的任何一个的功能代码; 从第二通用寄存器获取参数块的存储器地址; 响应于指定查询功能的功能代码,根据指定的查询功能将计算机系统的定时信息存储在参数块中; 响应于指定控制功能的功能代码,使用从参数块获得的定时信息来执行指定的控制功能; 并设置指示指定功能的结果的条件代码值。

    PULSE-PER-SECOND ATTACHMENT FOR STP

    公开(公告)号:US20090100197A1

    公开(公告)日:2009-04-16

    申请号:US12246181

    申请日:2008-10-06

    IPC分类号: G06F15/16

    CPC分类号: G06F1/12 G06F1/14

    摘要: A time synchronization apparatus, method and system are provided. In one aspect, the apparatus comprises at least a time of day clock, a first port operable to receive at least first time information using a first time protocol, a second port operable to receive at least second time information using a second time protocol, a third port operable to receive at least a timing signal, and a time stamp register operable to at least capture current value of the time of day clock upon receipt of the timing signal from the third port or the first time information from the first port or combination thereof.

    摘要翻译: 提供了一种时间同步装置,方法和系统。 在一个方面,该装置包括至少一个时钟时钟,第一端口,可操作以使用第一时间协议至少接收第一时间信息;第二端口,可操作以使用第二时间协议接收至少第二时间信息; 第三端口,其可操作以接收至少一个定时信号;以及时间戳寄存器,其可操作以在从第三端口接收到定时信号或来自第一端口或组合的第一时间信息时至少捕获时钟的当前值 其中。