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1. 发明授权

US07865760B2 Use of T4 timestamps to calculate clock offset and skew 有权
标题翻译：使用T4时间戳来计算时钟偏移和偏移
公开(公告)号：US07865760B2
公开(公告)日：2011-01-04
申请号：US12245303
申请日：2008-10-03
申请人： Scott M. Carlson , Michel H. T. Hack , Li Zhang
发明人： Scott M. Carlson , Michel H. T. Hack , Li Zhang
IPC分类号： G06F1/04 , G06F11/00 , H04J3/06
CPC分类号： G06F1/10
摘要： Disclosed are a method and system for calculating clock offset and skew between two clocks in a computer system. The method comprises the steps of sending data packets from a first processing unit in the computer system to a second processing unit in the computer system, and sending the data packets from the second processing unit to the first processing unit. First, second, third and fourth time stamps are provided to indicate, respectively, when the packets leave the first processing unit, arrive at the second processing unit, leave the second processing unit, and arrive at the first processing unit. The method comprises the further steps of defining a set of backward delay points using the fourth time stamps, and calculating a clock offset between clocks on the first and second processing units and clock skews of said clocks using said set of backward delay points.
摘要翻译：公开了一种用于计算计算机系统中两个时钟之间的时钟偏移和偏差的方法和系统。该方法包括以下步骤：将来自计算机系统中的第一处理单元的数据分组发送到计算机系统中的第二处理单元，并将数据分组从第二处理单元发送到第一处理单元。提供第一，第二，第三和第四时间戳以分别指示分组离开第一处理单元时到达第二处理单元，离开第二处理单元并到达第一处理单元。该方法包括以下步骤：使用第四时间戳定义一组后向延迟点;以及使用所述一组后向延迟点，计算第一和第二处理单元上的时钟之间的时钟偏移和所述时钟的时钟偏差。

2. 发明授权

US08869119B2 Preferential execution of method calls in hybrid systems 有权
公开(公告)号：US08869119B2
公开(公告)日：2014-10-21
申请号：US13616417
申请日：2012-09-14
申请人： Michael H. Dawson , Parijat Dube , Liana L. Fong , Yuqing Gao , Xavier R. Guerin , Michel H. T. Hack , Megumi Ito , Graeme Johnson , Nai K. Ling , Yanbin Liu , Xiaoqiao Meng , Pramod B. Nagaraja , Seetharami R. Seelam , Wei Tan , Li Zhang
发明人： Michael H. Dawson , Parijat Dube , Liana L. Fong , Yuqing Gao , Xavier R. Guerin , Michel H. T. Hack , Megumi Ito , Graeme Johnson , Nai K. Ling , Yanbin Liu , Xiaoqiao Meng , Pramod B. Nagaraja , Seetharami R. Seelam , Wei Tan , Li Zhang
IPC分类号： G06F9/44
CPC分类号： G06F9/5027 , G06F9/548 , G06F2209/501 , G06F2209/509 , G06F2209/542 , G06F2209/549 , Y02D10/22
摘要： Affinity-based preferential call technique, in one aspect, may improve performance of distributed applications in a hybrid system having heterogeneous platforms. A segment of code in a program being executed on a processor may be intercepted or trapped in runtime. A platform is selected in the hybrid system for executing said segment of code, the platform determined to run the segment of code with best efficiency among a plurality of platforms in the hybrid system. The segment of code is dynamically executed on the selected platform determined to run the segment of code with best efficiency.

3. 发明申请

US20130239128A1 PREFERENTIAL EXECUTION OF METHOD CALLS IN HYBRID SYSTEMS 有权
标题翻译：混合系统中方法调用的优先执行
公开(公告)号：US20130239128A1
公开(公告)日：2013-09-12
申请号：US13616417
申请日：2012-09-14
申请人： Michael H. Dawson , Parijat Dube , Liana L. Fong , Yuqing Gao , Xavier R. Guerin , Michel H. T. Hack , Megumi Ito , Graeme Johnson , Nai K. Ling , Yanbin Liu , Xiaoqiao Meng , Pramod B. Nagaraja , Seetharami R. Seelam , Wei Tan , Li Zhang
发明人： Michael H. Dawson , Parijat Dube , Liana L. Fong , Yuqing Gao , Xavier R. Guerin , Michel H. T. Hack , Megumi Ito , Graeme Johnson , Nai K. Ling , Yanbin Liu , Xiaoqiao Meng , Pramod B. Nagaraja , Seetharami R. Seelam , Wei Tan , Li Zhang
IPC分类号： G06F9/46
CPC分类号： G06F9/5027 , G06F9/548 , G06F2209/501 , G06F2209/509 , G06F2209/542 , G06F2209/549 , Y02D10/22
摘要： Affinity-based preferential call technique, in one aspect, may improve performance of distributed applications in a hybrid system having heterogeneous platforms. A segment of code in a program being executed on a processor may be intercepted or trapped in runtime. A platform is selected in the hybrid system for executing said segment of code, the platform determined to run the segment of code with best efficiency among a plurality of platforms in the hybrid system. The segment of code is dynamically executed on the selected platform determined to run the segment of code with best efficiency.
摘要翻译：基于亲和度的优惠呼叫技术在一个方面可以提高具有异构平台的混合系统中的分布式应用的性能。在处理器上执行的程序中的一段代码可能在运行时被拦截或被捕获。在混合系统中选择用于执行所述代码段的平台，所述平台被确定为以混合系统中的多个平台中的最佳效率运行代码段。在所选择的平台上动态地执行代码段，以确保以最佳效率运行代码段。

4. 发明授权

US08788689B2 Techniques for improved clock offset measuring 有权
标题翻译：改进时钟偏移测量技术
公开(公告)号：US08788689B2
公开(公告)日：2014-07-22
申请号：US13554000
申请日：2012-07-20
申请人： Steven E. Froehlich , Michel H. T. Hack , Xiaoqiao Meng , Li Zhang
发明人： Steven E. Froehlich , Michel H. T. Hack , Xiaoqiao Meng , Li Zhang
IPC分类号： G06F15/16
CPC分类号： H04J3/0667 , H04L47/10
摘要： In an exemplary aspect, method, apparatus, and program products are disclosed suitable for clock offset determination. One method includes performing a number of exchanges of at least single bytes with another network node, where values of the single bytes are different for the exchanges. The method also includes capturing and storing timestamps for each of the number of exchanges performed on the network node. A second method includes capturing and saving arrival timestamps for each of a number of timing messages in a set of timing messages received from another network node. This second method also includes sending the timestamps to at least the another node in response to completion of the set of timing messages.
摘要翻译：在示例性方面，公开了适用于时钟偏移确定的方法，装置和程序产品。一种方法包括与另一个网络节点执行至少单个字节的多个交换，其中单个字节的值对于交换机是不同的。该方法还包括捕获和存储在网络节点上执行的每个交换机的时间戳。第二种方法包括捕获并保存从另一网络节点接收的一组定时消息中的多个定时消息中的每一个的到达时间戳。该第二种方法还包括响应于该组定时消息的完成向至少另一个节点发送时间戳。

5. 发明授权

US08843894B2 Preferential execution of method calls in hybrid systems 有权
标题翻译：在混合系统中优先执行方法调用
公开(公告)号：US08843894B2
公开(公告)日：2014-09-23
申请号：US13417878
申请日：2012-03-12
申请人： Michael H. Dawson , Parijat Dube , Liana L. Fong , Yuqing Gao , Xavier R. Guerin , Michel H. T. Hack , Megumi Ito , Graeme Johnson , Nai K. Ling , Yanbin Liu , Xiaoqiao Meng , Pramod B. Nagaraja , Seetharami R. Seelam , Wei Tan , Li Zhang
发明人： Michael H. Dawson , Parijat Dube , Liana L. Fong , Yuqing Gao , Xavier R. Guerin , Michel H. T. Hack , Megumi Ito , Graeme Johnson , Nai K. Ling , Yanbin Liu , Xiaoqiao Meng , Pramod B. Nagaraja , Seetharami R. Seelam , Wei Tan , Li Zhang
IPC分类号： G06F9/45
CPC分类号： G06F9/5027 , G06F9/548 , G06F2209/501 , G06F2209/509 , G06F2209/542 , G06F2209/549 , Y02D10/22
摘要： Affinity-based preferential call technique, in one aspect, may improve performance of distributed applications in a hybrid system having heterogeneous platforms. A segment of code in a program being executed on a processor may be intercepted or trapped in runtime. A platform is selected in the hybrid system for executing said segment of code, the platform determined to run the segment of code with best efficiency among a plurality of platforms in the hybrid system. The segment of code is dynamically executed on the selected platform determined to run the segment of code with best efficiency.
摘要翻译：基于亲和度的优惠呼叫技术在一个方面可以提高具有异构平台的混合系统中的分布式应用的性能。在处理器上执行的程序中的一段代码可能在运行时被拦截或被捕获。在混合系统中选择用于执行所述代码段的平台，所述平台被确定为以混合系统中的多个平台中的最佳效率运行代码段。在所选择的平台上动态地执行代码段，以确保以最佳效率运行代码段。

6. 发明授权

US08533355B2 Techniques for improved clock offset measuring 有权
标题翻译：改进时钟偏移测量技术
公开(公告)号：US08533355B2
公开(公告)日：2013-09-10
申请号：US12610430
申请日：2009-11-02
申请人： Steven E. Froehlich , Michel H. T. Hack , Xiaoqiao Meng , Li Zhang
发明人： Steven E. Froehlich , Michel H. T. Hack , Xiaoqiao Meng , Li Zhang
IPC分类号： G06F15/16
CPC分类号： H04J3/0667 , H04L47/10
摘要： In an exemplary aspect, method, apparatus, and program products are disclosed suitable for clock offset determination. One method includes performing a number of exchanges of at least single bytes with another network node, where values of the single bytes are different for the exchanges. The method also includes capturing and storing timestamps for each of the number of exchanges performed on the network node. A second method includes capturing and saving arrival timestamps for each of a number of timing messages in a set of timing messages received from another network node. This second method also includes sending the timestamps to at least the another node in response to completion of the set of timing messages.
摘要翻译：在示例性方面，公开了适用于时钟偏移确定的方法，装置和程序产品。一种方法包括与另一个网络节点执行至少单个字节的多个交换，其中单个字节的值对于交换机是不同的。该方法还包括捕获和存储在网络节点上执行的每个交换机的时间戳。第二种方法包括捕获并保存从另一网络节点接收的一组定时消息中的多个定时消息中的每一个的到达时间戳。该第二种方法还包括响应于该组定时消息的完成向至少另一个节点发送时间戳。

7. 发明授权

US08055929B2 Method and apparatus for maintaining time in a computer system 失效
标题翻译：在计算机系统中保持时间的方法和装置
公开(公告)号：US08055929B2
公开(公告)日：2011-11-08
申请号：US12186658
申请日：2008-08-06
申请人： Steven Froehlich , Michel H. T. Hack , Xiaoqiao Meng , Li Zhang
发明人： Steven Froehlich , Michel H. T. Hack , Xiaoqiao Meng , Li Zhang
IPC分类号： G06F1/12 , G06F1/00 , G06F1/04 , G06F1/14
CPC分类号： G06F1/14
摘要： A computer system is arranged with a circular buffer that includes a piecewise linear map from a high-resolution counter arranged to maintain International Atomic Time. The piecewise linear map includes a current leg that is currently being used and also a future leg that will be used in the future. The future leg is computed while the current leg is still being used.
摘要翻译：计算机系统布置有循环缓冲器，其包括布置成保持国际原子时间的高分辨率计数器的分段线性映射。分段线性映射包括当前正在使用的当前分支，以及将来将要使用的未来分支。当前腿仍在使用时计算未来的腿。

8. 发明申请

US20130235992A1 PREFERENTIAL EXECUTION OF METHOD CALLS IN HYBRID SYSTEMS 有权
公开(公告)号：US20130235992A1
公开(公告)日：2013-09-12
申请号：US13417878
申请日：2012-03-12
申请人： Michael H. Dawson , Parijat Dube , Liana L. Fong , Yuqing Gao , Xavier R. Guerin , Michel H. T. Hack , Megumi Ito , Graeme Johnson , Nai K. Ling , Yanbin Liu , Xiaoqiao Meng , Pramod B. Nagaraja , Seetharami R. Seelam , Wei Tan , Li Zhang
发明人： Michael H. Dawson , Parijat Dube , Liana L. Fong , Yuqing Gao , Xavier R. Guerin , Michel H. T. Hack , Megumi Ito , Graeme Johnson , Nai K. Ling , Yanbin Liu , Xiaoqiao Meng , Pramod B. Nagaraja , Seetharami R. Seelam , Wei Tan , Li Zhang
IPC分类号： H04M3/42
CPC分类号： G06F9/5027 , G06F9/548 , G06F2209/501 , G06F2209/509 , G06F2209/542 , G06F2209/549 , Y02D10/22
摘要： Affinity-based preferential call technique, in one aspect, may improve performance of distributed applications in a hybrid system having heterogeneous platforms. A segment of code in a program being executed on a processor may be intercepted or trapped in runtime. A platform is selected in the hybrid system for executing said segment of code, the platform determined to run the segment of code with best efficiency among a plurality of platforms in the hybrid system. The segment of code is dynamically executed on the selected platform determined to run the segment of code with best efficiency.

9. 发明授权

US08139489B2 Robust jitter-free remote clock offset measuring method 有权
标题翻译：稳定无抖动的远程时钟偏移测量方法
公开(公告)号：US08139489B2
公开(公告)日：2012-03-20
申请号：US12186588
申请日：2008-08-06
申请人： Steven Froehlich , Michel H. T. Hack , Xiaoqiao Meng , Li Zhang
发明人： Steven Froehlich , Michel H. T. Hack , Xiaoqiao Meng , Li Zhang
IPC分类号： G01R31/08
CPC分类号： H04L43/087 , H04J3/0667 , H04L43/0858 , H04L43/106
摘要： A clock offset between a client and a server is measured by: (a) the client sending a request to the server; (b) upon receiving the request in step (a), the server optionally sending a server acknowledgement to the client; (c) upon the client receiving the server acknowledgement in step (b) or directly, if no acknowledgement was used, each of the client and the server proceeding to concurrently exchange their respective timestamps with each other a multiplicity (n) of times, thus forming a multiplicity (n) of timestamp exchanges; and (d) determining a plurality of apparent forwards and backwards delays based on the multiplicity (n) of timestamp exchanges. The preferred apparent forwards and backwards delays are then selected based on the minimum values (for each direction) determined in (d) above. The clock offset between client and server is then determined based on the preferred apparent forwards and backwards delays.
摘要翻译：客户端和服务器之间的时钟偏移是通过以下方式测量的：（a）客户端向服务器发送请求; （b）在步骤（a）中接收到请求后，服务器可选地向客户端发送服务器确认; （c）在客户端在步骤（b）中接收到服务器确认或直接接收到服务器确认，如果没有使用确认，则客户端和服务器中的每个客户端和服务器进行多次（n次）的同时交换它们各自的时间戳，从而形成多个（n）时间戳交换; 和（d）基于时间戳交换的多重性（n）来确定多个明显的向前和向后的延迟。然后根据上述（d）中确定的最小值（对于每个方向）选择优选的明显的向前和向后延迟。然后基于优选的明显的向前和向后延迟来确定客户端和服务器之间的时钟偏移。

10. 发明申请

US20100034103A1 Robust Jitter-Free Remote Clock Offset Measuring Method 有权
标题翻译：强大的无抖动远程时钟偏移测量方法
公开(公告)号：US20100034103A1
公开(公告)日：2010-02-11
申请号：US12186588
申请日：2008-08-06
申请人： Steven Froehlich , Michel H. T. Hack , Xiaoqiao Meng , Li Zhang
发明人： Steven Froehlich , Michel H. T. Hack , Xiaoqiao Meng , Li Zhang
IPC分类号： G06F11/30
CPC分类号： H04L43/087 , H04J3/0667 , H04L43/0858 , H04L43/106
摘要： A clock offset between a client and a server is measured by: (a) the client sending a request to the server; (b) upon receiving the request in step (a), the server optionally sending a server acknowledgement to the client; (c) upon the client receiving the server acknowledgement in step (b) or directly, if no acknowledgement was used, each of the client and the server proceeding to concurrently exchange their respective timestamps with each other a multiplicity (n) of times, thus forming a multiplicity (n) of timestamp exchanges; and (d) determining a plurality of apparent forwards and backwards delays based on the multiplicity (n) of timestamp exchanges. The preferred apparent forwards and backwards delays are then selected based on the minimum values (for each direction) determined in (d) above. The clock offset between client and server is then determined based on the preferred apparent forwards and backwards delays.
摘要翻译：客户端和服务器之间的时钟偏移是通过以下方式测量的：（a）客户端向服务器发送请求; （b）在步骤（a）中接收到请求后，服务器可选地向客户端发送服务器确认; （c）在客户端在步骤（b）中接收到服务器确认或直接接收到服务器确认，如果没有使用确认，则客户端和服务器中的每个客户端和服务器进行多次（n次）的同时交换它们各自的时间戳，从而形成多个（n）时间戳交换; 和（d）基于时间戳交换的多重性（n）来确定多个明显的向前和向后的延迟。然后根据上述（d）中确定的最小值（对于每个方向）选择优选的明显的向前和向后延迟。然后基于优选的明显的向前和向后延迟来确定客户端和服务器之间的时钟偏移。

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