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1. 发明申请

US20130111135A1 VARIABLE CACHE LINE SIZE MANAGEMENT 有权
标题翻译：可变缓存线尺寸管理
公开(公告)号：US20130111135A1
公开(公告)日：2013-05-02
申请号：US13286507
申请日：2011-11-01
申请人： Robert H. Bell, JR. , Wen-Tzer T. Chen , Diane G. Flemming , Hong L. Hua , William A. Maron , Mysore S. Srinivas
发明人： Robert H. Bell, JR. , Wen-Tzer T. Chen , Diane G. Flemming , Hong L. Hua , William A. Maron , Mysore S. Srinivas
IPC分类号： G06F12/08
CPC分类号： G06F12/08 , G06F12/0811 , G06F12/0897
摘要： According to one aspect of the present disclosure, a system and technique for variable cache line size management is disclosed. The system includes a processor and a cache hierarchy, where the cache hierarchy includes a sectored upper level cache and an unsectored lower level cache, and wherein the upper level cache includes a plurality of sub-sectors, each sub-sector having a cache line size corresponding to a cache line size of the lower level cache. The system also includes logic executable to, responsive to determining that a cache line from the upper level cache is to be evicted to the lower level cache: identify referenced sub-sectors of the cache line to be evicted; invalidate unreferenced sub-sectors of the cache line to be evicted; and store the referenced sub-sectors in the lower level cache.
摘要翻译：根据本公开的一个方面，公开了一种用于可变高速缓存行大小管理的系统和技术。该系统包括处理器和高速缓存层级，其中高速缓存分层结构包括扇区高级缓存和未被覆盖的较低级高速缓存，并且其中高级高速缓存包括多个子扇区，每个子扇区具有高速缓存行大小对应于较低级别缓存的高速缓存行大小。该系统还包括可执行的逻辑，用于响应于确定来自较高级别高速缓存的高速缓存线将被驱逐到较低级高速缓存：识别要驱逐的高速缓存行的参考子扇区; 使缓存行的未引用子扇区无效; 并将参考的子扇区存储在较低级别的高速缓存中。

2. 发明申请

US20080307203A1 Scaling Instruction Intervals to Identify Collection Points for Representative Instruction Traces 失效
标题翻译：缩放指令间隔以识别代表性指令跟踪的收集点
公开(公告)号：US20080307203A1
公开(公告)日：2008-12-11
申请号：US11758031
申请日：2007-06-05
申请人： Robert H. Bell, JR. , Wen-Tzer T. Chen , Richard J. Eickemeyer , Venkat R. Indukuru , Pattabi M. Seshadri , Madhavi G. Valluri
发明人： Robert H. Bell, JR. , Wen-Tzer T. Chen , Richard J. Eickemeyer , Venkat R. Indukuru , Pattabi M. Seshadri , Madhavi G. Valluri
IPC分类号： G06F9/30
CPC分类号： G06F11/36
摘要： A method, system, and computer program product are provided for identifying instructions to obtain representative traces. A phase instruction budget is calculated for each phase in a set of phases. The phase instruction budget is based on a weight associated with each phase and a global instruction budget. A starting index and an ending index are identified for instructions within a set of intervals in each phase in order to meet the phase instruction budget for that phase, thereby forming a set of interval indices. A determination is made as to whether the instructions within the set of interval indices meet the global instruction budget. Responsive to the global instruction budget being met, the set of interval indices are output as collection points for the representative traces.
摘要翻译：提供方法，系统和计算机程序产品用于识别指令以获得代表性迹线。针对一组阶段中的每个阶段计算相位指令预算。相位指令预算基于与每个阶段相关联的权重和全局指令预算。为了满足该阶段的相位指令预算，为每个阶段的一组间隔内的指令识别开始索引和结束索引，从而形成一组间隔索引。确定区间指标集内的指令是否符合全球指令预算。响应于满足全球指令预算，间隔指数的集合作为代表性跟踪的收集点输出。

3. 发明申请

US20130145135A1 PERFORMANCE OF PROCESSORS IS IMPROVED BY LIMITING NUMBER OF BRANCH PREDICTION LEVELS 有权
标题翻译：通过限制分支预测水平数来改进处理器的性能
公开(公告)号：US20130145135A1
公开(公告)日：2013-06-06
申请号：US13308696
申请日：2011-12-01
申请人： Robert H. Bell, JR. , Wen-Tzer T. Chen
发明人： Robert H. Bell, JR. , Wen-Tzer T. Chen
IPC分类号： G06F9/38 , G06F9/30
CPC分类号： G06F9/3844 , G06F9/3842 , G06F11/30 , G06F11/3024 , G06F11/3409 , G06F2201/81
摘要： A method utilizes information provided by performance monitoring hardware to dynamically adjust the number of levels of speculative branch predictions allowed (typically 3 or 4 per thread). for a processor core. The information includes cycles-per-instruction (CPI) for the processor core and number of memory accesses per unit time. If the CPI is below a CPI threshold; and the number of memory accesses (NMA) per unit time is above a prescribe threshold, the number of levels of speculative branch predictions is reduced per thread for the processor core. Likewise, the number of levels of speculative branch predictions could be increased, from a low level to maximum allowed, if the CPI threshold is exceeded or the number of memory accesses per unit time is below the prescribed threshold.
摘要翻译：一种方法利用由性能监视硬件提供的信息来动态地调整允许的推测分支预测级别的数量（通常每线程3或4个）。用于处理器核心。该信息包括处理器核心的每个指令周期（CPI）和每单位时间的存储器访问次数。如果CPI低于CPI阈值; 并且每单位时间的存储器访问次数（NMA）高于规定阈值，则针对处理器核的每个线程的推测分支预测的级别数量减少。同样地，如果超过CPI阈值或每单位时间的存储器访问次数低于规定的阈值，则可以将推测分支预测的级数从低级别增加到允许的最大级别。

4. 发明授权

US08935478B2 Variable cache line size management 有权
标题翻译：可变缓存行大小管理
公开(公告)号：US08935478B2
公开(公告)日：2015-01-13
申请号：US13286507
申请日：2011-11-01
申请人： Robert H. Bell, Jr. , Wen-Tzer T. Chen , Diane G. Flemming , Hong L. Hua , William A. Maron , Mysore S. Srinivas
发明人： Robert H. Bell, Jr. , Wen-Tzer T. Chen , Diane G. Flemming , Hong L. Hua , William A. Maron , Mysore S. Srinivas
IPC分类号： G06F12/00 , G06F12/08
CPC分类号： G06F12/08 , G06F12/0811 , G06F12/0897
摘要： According to one aspect of the present disclosure, a system and technique for variable cache line size management is disclosed. The system includes a processor and a cache hierarchy, where the cache hierarchy includes a sectored upper level cache and an unsectored lower level cache, and wherein the upper level cache includes a plurality of sub-sectors, each sub-sector having a cache line size corresponding to a cache line size of the lower level cache. The system also includes logic executable to, responsive to determining that a cache line from the upper level cache is to be evicted to the lower level cache: identify referenced sub-sectors of the cache line to be evicted; invalidate unreferenced sub-sectors of the cache line to be evicted; and store the referenced sub-sectors in the lower level cache.
摘要翻译：根据本公开的一个方面，公开了一种用于可变高速缓存行大小管理的系统和技术。该系统包括处理器和高速缓存层级，其中高速缓存分层结构包括扇区高级缓存和未被覆盖的较低级高速缓存，并且其中高级高速缓存包括多个子扇区，每个子扇区具有高速缓存行大小对应于较低级别缓存的高速缓存行大小。该系统还包括可执行的逻辑，用于响应于确定来自较高级别高速缓存的高速缓存线将被驱逐到较低级高速缓存：识别要驱逐的高速缓存行的参考子扇区; 使缓存行的未引用子扇区无效; 并将参考的子扇区存储在较低级别的高速缓存中。

5. 发明申请

US20130111136A1 VARIABLE CACHE LINE SIZE MANAGEMENT 有权
标题翻译：可变缓存线尺寸管理
公开(公告)号：US20130111136A1
公开(公告)日：2013-05-02
申请号：US13451742
申请日：2012-04-20
申请人： Robert H. Bell, JR. , Wen-Tzer T. Chen , Diane G. Flemming , Hong L. Hua , William A. Maron , Mysore S. Srinivas
发明人： Robert H. Bell, JR. , Wen-Tzer T. Chen , Diane G. Flemming , Hong L. Hua , William A. Maron , Mysore S. Srinivas
IPC分类号： G06F12/08
CPC分类号： G06F12/08 , G06F12/0811 , G06F12/0897
摘要： According to one aspect of the present disclosure, a method and technique for variable cache line size management is disclosed. The method includes: determining whether an eviction of a cache line from an upper level sectored cache to an unsectored lower level cache is to be performed, wherein the upper level cache includes a plurality of sub-sectors, each sub-sector having a cache line size corresponding to a cache line size of the lower level cache; responsive to determining that an eviction is to be performed, identifying referenced sub-sectors of the cache line to be evicted; invalidating unreferenced sub-sectors of the cache line to be evicted; and storing the referenced sub-sectors in the lower level cache.
摘要翻译：根据本公开的一个方面，公开了一种用于可变高速缓存行大小管理的方法和技术。该方法包括：确定是否执行将高速缓存行从高级扇区高速缓存驱逐到未故障的较低级高速缓存，其中高级缓存包括多个子扇区，每个子扇区具有高速缓存行对应于较低级缓存的高速缓存行大小的大小; 响应于确定要执行驱逐，识别要被驱逐的高速缓存行的参考子扇区; 使要删除的缓存行的未引用子扇区无效; 并将所引用的子扇区存储在下级缓存中。

6. 发明授权

US08091073B2 Scaling instruction intervals to identify collection points for representative instruction traces 失效
标题翻译：缩放指令间隔以标识代表性指令轨迹的收集点
公开(公告)号：US08091073B2
公开(公告)日：2012-01-03
申请号：US11758031
申请日：2007-06-05
申请人： Robert H. Bell, Jr. , Wen-Tzer T. Chen , Richard J. Eickemeyer , Venkat R. Indukuru , Pattabi M. Seshadri , Madhavi G. Valluri
发明人： Robert H. Bell, Jr. , Wen-Tzer T. Chen , Richard J. Eickemeyer , Venkat R. Indukuru , Pattabi M. Seshadri , Madhavi G. Valluri
IPC分类号： G06F9/44
CPC分类号： G06F11/36
摘要： A method, system, and computer program product are provided for identifying instructions to obtain representative traces. A phase instruction budget is calculated for each phase in a set of phases. The phase instruction budget is based on a weight associated with each phase and a global instruction budget. A starting index and an ending index are identified for instructions within a set of intervals in each phase in order to meet the phase instruction budget for that phase, thereby forming a set of interval indices. A determination is made as to whether the instructions within the set of interval indices meet the global instruction budget. Responsive to the global instruction budget being met, the set of interval indices are output as collection points for the representative traces.
摘要翻译：提供方法，系统和计算机程序产品用于识别指令以获得代表性迹线。针对一组阶段中的每个阶段计算相位指令预算。相位指令预算基于与每个阶段相关联的权重和全局指令预算。为了满足该阶段的相位指令预算，为每个阶段的一组间隔内的指令识别开始索引和结束索引，从而形成一组间隔索引。确定区间指标集内的指令是否符合全球指令预算。响应于满足全球指令预算，间隔指数的集合作为代表性跟踪的收集点输出。

7. 发明授权

US09582284B2 Performance of processors is improved by limiting number of branch prediction levels 有权
标题翻译：通过限制分支预测级别的数量来提高处理器的性能
公开(公告)号：US09582284B2
公开(公告)日：2017-02-28
申请号：US13308696
申请日：2011-12-01
申请人： Robert H. Bell, Jr. , Wen-Tzer T. Chen
发明人： Robert H. Bell, Jr. , Wen-Tzer T. Chen
IPC分类号： G06F9/38 , G06F11/30
CPC分类号： G06F9/3844 , G06F9/3842 , G06F11/30 , G06F11/3024 , G06F11/3409 , G06F2201/81
摘要： A method utilizes information provided by performance monitoring hardware to dynamically adjust the number of levels of speculative branch predictions allowed (typically 3 or 4 per thread) for a processor core. The information includes cycles-per-instruction (CPI) for the processor core and number of memory accesses per unit time. If the CPI is below a CPI threshold; and the number of memory accesses (NMA) per unit time is above a prescribed threshold, the number of levels of speculative branch predictions is reduced per thread for the processor core. Likewise, the number of levels of speculative branch predictions could be increased, from a low level to maximum allowed, if the CPI threshold is exceeded or the number of memory accesses per unit time is below the prescribed threshold.
摘要翻译：一种方法利用由性能监视硬件提供的信息来动态调整对于处理器核心允许的推测分支预测级别（通常为每线程3或4个）。该信息包括处理器核心的每个指令周期（CPI）和每单位时间的存储器访问次数。如果CPI低于CPI阈值; 并且每单位时间的存储器访问次数（NMA）高于规定的阈值，则对于处理器核，每个线程的推测分支预测的级别数量减少。同样地，如果超过CPI阈值或每单位时间的存储器访问次数低于规定的阈值，则可以将推测分支预测的级数从低级别增加到允许的最大级别。

8. 发明授权

US08943272B2 Variable cache line size management 有权
标题翻译：可变缓存行大小管理
公开(公告)号：US08943272B2
公开(公告)日：2015-01-27
申请号：US13451742
申请日：2012-04-20
申请人： Robert H. Bell, Jr. , Wen-Tzer T. Chen , Diane G. Flemming , Hong L. Hua , William A. Maron , Mysore S. Srinivas
发明人： Robert H. Bell, Jr. , Wen-Tzer T. Chen , Diane G. Flemming , Hong L. Hua , William A. Maron , Mysore S. Srinivas
IPC分类号： G06F12/00 , G06F12/08
CPC分类号： G06F12/08 , G06F12/0811 , G06F12/0897
摘要： According to one aspect of the present disclosure, a method and technique for variable cache line size management is disclosed. The method includes: determining whether an eviction of a cache line from an upper level sectored cache to an unsectored lower level cache is to be performed, wherein the upper level cache includes a plurality of sub-sectors, each sub-sector having a cache line size corresponding to a cache line size of the lower level cache; responsive to determining that an eviction is to be performed, identifying referenced sub-sectors of the cache line to be evicted; invalidating unreferenced sub-sectors of the cache line to be evicted; and storing the referenced sub-sectors in the lower level cache.
摘要翻译：根据本公开的一个方面，公开了一种用于可变高速缓存行大小管理的方法和技术。该方法包括：确定是否执行将高速缓存行从高级扇区高速缓存驱逐到未故障的较低级高速缓存，其中高级缓存包括多个子扇区，每个子扇区具有高速缓存行对应于较低级缓存的高速缓存行大小的大小; 响应于确定要执行驱逐，识别要被驱逐的高速缓存行的参考子扇区; 使要删除的缓存行的未引用子扇区无效; 并将所引用的子扇区存储在下级缓存中。

9. 发明授权

US08549354B2 Managing rollback in a transactional memory environment 有权
标题翻译：在事务性内存环境中管理回滚
公开(公告)号：US08549354B2
公开(公告)日：2013-10-01
申请号：US13113663
申请日：2011-05-23
申请人： Wen-Tzer T. Chen , Diane G. Flemming , William A. Maron , Mysore S. Srinivas , David B. Whitworth
发明人： Wen-Tzer T. Chen , Diane G. Flemming , William A. Maron , Mysore S. Srinivas , David B. Whitworth
IPC分类号： G06F11/00
CPC分类号： G06F9/528 , G06F9/467
摘要： A system and technique for managing rollback in a transactional memory environment is disclosed. The system includes a processor, a transactional memory, and a transactional memory manager (TMM) configured to perform a rollback on the transactional memory. The TMM is configured to, responsive to detecting a begin transaction directive by the processor, detect an access of a first memory location of the transactional memory not needing rollback and indicate that the first memory location does not need to be rolled back while detecting an access to a second memory location of the transactional memory and indicating that a rollback will be required. The TMM is also configured to, responsive to detecting an end transaction directive after the begin transaction directive and a conflict requiring a rollback, omit a rollback of the first memory location while performing rollback on the second memory location.
摘要翻译：公开了一种用于在事务性存储器环境中管理回滚的系统和技术。该系统包括处理器，事务存储器和被配置为在事务存储器上执行回滚的事务性存储器管理器（TMM）。 TMM被配置为响应于检测到处理器的开始事务指令，检测不需要回滚的事务存储器的第一存储器位置的访问，并且指示在检测到访问期间不需要回滚第一存储器位置到事务存储器的第二存储器位置并且指示将需要回滚。 TMM还被配置为响应于在开始事务指令之后检测到结束事务指令和需要回滚的冲突，在第二存储器位置处执行回滚时，省略第一存储器位置的回滚。

10. 发明申请

US20120303938A1 PERFORMANCE IN PREDICTING BRANCHES 有权
标题翻译：预测分行业绩效
公开(公告)号：US20120303938A1
公开(公告)日：2012-11-29
申请号：US13116515
申请日：2011-05-26
申请人： Wen-Tzer T. Chen , Diane G. Flemming , William A. Maron , Mysore S. Srinivas , David B. Whitworth
发明人： Wen-Tzer T. Chen , Diane G. Flemming , William A. Maron , Mysore S. Srinivas , David B. Whitworth
IPC分类号： G06F9/38
CPC分类号： G06F9/3844 , G06F9/38 , G06F9/3806 , G06F9/3848
摘要： A method, data processing system, and computer program product for processing instructions. The instructions are processed by a processor unit while using a first table in a plurality of tables to predict a set of instructions needed by the processor unit after processing of a conditional instruction. An identification is formed that a rate of success in correctly predicting the set of instructions when using the first table is less than a threshold number. A sequence of the instructions being processed by the processor unit is searched for an instruction that matches a marker in a set of markers for identifying when to use the plurality of tables. An identification that the instruction that matches the marker is formed. A second table from the plurality of tables referenced by the marker is identified. The second table is used in place of the first table.
摘要翻译：一种处理指令的方法，数据处理系统和计算机程序产品。所述指令由处理器单元处理，同时使用多个表中的第一表来预测在处理条件指令之后所述处理器单元所需的一组指令。形成识别，即当使用第一表时正确预测指令集的成功率小于阈值数。搜索由处理器单元处理的指令的序列，以搜索与用于识别何时使用多个表的一组标记中的标记相匹配的指令。形成与标记相符的指令的标识。识别由标记引用的多个表中的第二表。第二个表用于代替第一个表。

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