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    • 4. 发明授权
    • Methods and apparatus to support conditional execution in a VLIW-based array processor with subword execution
    • 在具有子字执行的基于VLIW的阵列处理器中支持条件执行的方法和装置
    • US06366999B1
    • 2002-04-02
    • US09238446
    • 1999-01-28
    • Thomas L. DrabenstottGerald G. PechanekEdwin F. BarryCharles W. Kurak, Jr.
    • Thomas L. DrabenstottGerald G. PechanekEdwin F. BarryCharles W. Kurak, Jr.
    • G06F1580
    • G06F9/30094G06F9/30036G06F9/30072G06F9/30181G06F9/3842G06F9/3885G06F9/3887G06F9/3891G06F15/8007
    • General purpose flags (ACFs) are defined and encoded utilizing a hierarchical one-, two- or three-bit encoding. Each added bit provides a superset of the previous functionality. With condition combination, a sequential series of conditional branches based on complex conditions may be avoided and complex conditions can then be used for conditional execution. ACF generation and use can be specified by the programmer. By varying the number of flags affected, conditional operation parallelism can be widely varied, for example, from mono-processing to octal-processing in VLIW execution, and across an array of processing elements (PE)s. Multiple PEs can generate condition information at the same time with the programmer being able to specify a conditional execution in one processor based upon a condition generated in a different processor using the communications interface between the processing elements to transfer the conditions. Each processor in a multiple processor array may independently have different units conditionally operate based upon their ACFs.
    • 使用分层一位,二位或三位编码来定义和编码通用标志(ACF)。 每个添加的位提供了先前功能的超集。 通过条件组合,可以避免基于复杂条件的顺序一系列条件分支,然后可以将复杂条件用于条件执行。 ACF生成和使用可以由程序员指定。 通过改变受影响的标志的数量,条件操作并行性可以被广泛地变化,例如,从VLIW执行中的单处理到八进制处理,以及处理元件(PE)的阵列。 多个PE可以同时生成条件信息,程序员能够基于使用处理元件之间的通信接口在不同的处理器中生成的条件来指定一个处理器中的条件执行以传送条件。 多处理器阵列中的每个处理器可以独立地具有基于它们的ACF有条件地操作的不同单元。
    • 5. 发明授权
    • Methods and apparatus for manarray PE-PE switch control
    • 用于管理PE-PE开关控制的方法和装置
    • US06366997B1
    • 2002-04-02
    • US09649647
    • 2000-08-29
    • Edwin F. BarryGerald G. PechanekThomas L. DrabenstottEdward A. WolffNikos P. PitsianisGrayson Morris
    • Edwin F. BarryGerald G. PechanekThomas L. DrabenstottEdward A. WolffNikos P. PitsianisGrayson Morris
    • G06F1576
    • G06F15/17381H04L49/1553H04L49/201H04L49/3009H04L49/45
    • Processing element to processing element switch connection control is described using a receive model that precludes communication hazards from occurring in a synchronous MIMD mode of operation. Such control allows different communication topologies and various processing effects such as an array transpose, hypercomplement or the like to be efficiently achieved utilizing architectures, such as the manifold array processing architecture. An encoded instruction method reduces the amount of state information and setup burden on the programmer taking advantage of the recognition that the majority of algorithms will use only a small fraction of all possible mux settings available. Thus, by means of transforming the PE identification based upon a communication path specified by a PE communication instruction an efficient switch control mechanism can be used. This control mechanism allows PE register broadcast operations as well as the standard mesh and hypercube communication paths over the same interconnection network. PE to PE communication instructions PEXCHG, SPRECV and SPSEND are also defined and implemented.
    • 使用接收模型描述处理元件切换连接控制的处理元件,该接收模型排除在同步MIMD操作模式中发生通信危险。 这样的控制允许利用诸如歧管阵列处理架构的架构有效地实现不同的通信拓扑和各种处理效果,例如阵列转置,超补充等。 编码指令方法通过利用大多数算法仅使用所有可能的多路复用器设置的一小部分的识别来减少程序员的状态信息和设置负担的量。 因此,通过基于由PE通信指令指定的通信路径变换PE标识,可以使用有效的开关控制机构。 该控制机制允许PE寄存器广播操作以及相同互连网络上的标准网格和超立方体通信路径。 PE到PE通信指令PEXCHG,SPRECV和SPSEND也被定义和实现。
    • 7. 发明授权
    • Methods and apparatus for scalable instruction set architecture with dynamic compact instructions
    • 用于具有动态紧凑指令的可扩展指令集架构的方法和装置
    • US06848041B2
    • 2005-01-25
    • US10424961
    • 2003-04-28
    • Gerald G. PechanekEdwin F. BarryJuan Guillermo RevillaLarry D. Larsen
    • Gerald G. PechanekEdwin F. BarryJuan Guillermo RevillaLarry D. Larsen
    • G06F9/30G06F9/318G06F9/38G06F15/80
    • G06F9/3822G06F9/30145G06F9/30149G06F9/30178G06F9/30181G06F9/382G06F9/3885
    • A hierarchical instruction set architecture (ISA) provides pluggable instruction set capability and support of array processors. The term pluggable is from the programmer's viewpoint and relates to groups of instructions that can easily be added to a processor architecture for code density and performance enhancements. One specific aspect addressed herein is the unique compacted instruction set which allows the programmer the ability to dynamically create a set of compacted instructions on a task by task basis for the primary purpose of improving control and parallel code density. These compacted instructions are parallelizable in that they are not specifically restricted to control code application but can be executed in the processing elements (PEs) in an array processor. The ManArray family of processors is designed for this dynamic compacted instruction set capability and also supports a scalable array of from one to N PEs. In addition, the ManArray ISA is defined as a hierarchy of ISAs which allows for future growth in instruction capability and supports the packing of multiple instructions within a hierarchy of instructions.
    • 分层指令集架构(ISA)提供可插拔指令集功能和阵列处理器的支持。 术语pluggable来自程序员的观点,并且涉及可以容易地添加到处理器架构中以用于代码密度和性能增强的指令组。 本文所述的一个具体方面是独特的压缩指令集,其允许程序员能够通过任务为任务动态地创建一组压缩指令,以提高控制和并行代码密度的主要目的。 这些压缩指令是可并行的,因为它们不特别地限于控制代码应用,而是可以在阵列处理器中的处理元件(PE)中执行。 ManArray系列处理器专为此动态压缩指令集功能而设计,并且还支持从一个到N个PE的可扩展阵列。 此外,ManArray ISA被定义为ISA的层次结构,其允许未来指令能力的增长并且支持在指令层次结构内的多个指令的打包。
    • 10. 发明授权
    • Methods and apparatus to dynamically reconfigure the instruction pipeline of an indirect very long instruction word scalable processor
    • 用于动态重新配置间接非常长的指令字可缩放处理器的指令流水线的方法和装置
    • US06775766B2
    • 2004-08-10
    • US09796040
    • 2001-02-28
    • Juan Guillermo RevillaEdwin F. BarryPatrick Rene MarchandGerald G. Pechanek
    • Juan Guillermo RevillaEdwin F. BarryPatrick Rene MarchandGerald G. Pechanek
    • G06F922
    • G06F9/3873G06F9/30058G06F9/30076G06F9/30079G06F9/30181G06F9/30189G06F9/3802G06F9/3842G06F9/3853G06F9/3859G06F9/3867G06F9/3885
    • A ManArray processor pipeline design addresses an indirect VLIW memory access problem without increasing branch latency by providing a dynamically reconfigurable instruction pipeline for SIWs requiring a VLIW to be fetched. By introducing an additional cycle in the pipeline only when a VLIW fetch is required, the present invention solves the VLIW memory access problem. The pipeline stays in an expanded state, in general, until a branch type or load VLIW memory type operation is detected returning the pipeline to a compressed pipeline operation. By compressing the pipeline when a branch type operation is detected, the need for an additional cycle for the branch operation is avoided. Consequently, the shorter compressed pipeline provides more efficient performance for branch intensive control code as compared to a fixed pipeline with an expanded number of pipeline stages. In addition, the dynamic reconfigurable pipeline is scalable allowing each processing element (PE) in an array of PEs to expand and compress the pipeline in synchronism allowing iVLIW operations to execute independently in each PE. This is accomplished by having distributed pipelines in operation in parallel, one in each PE and in the controller sequence processor (SP).
    • ManArray处理器管线设计通过为需要获取VLIW的SIW提供动态可重配置的指令流水线来解决间接VLIW存储器访问问题,而不会增加分支延迟。 通过仅在需要VLIW提取时引入额外的循环,本发明解决了VLIW存储器访问问题。 通常,管线保持在扩展状态,直到检测到分支类型或负载VLIW存储器类型操作,将流水线返回到压缩管道操作。 当检测到分支类型操作时通过压缩流水线,避免了用于分支操作的附加周期的需要。 因此,与具有扩展数量的流水线级的固定管道相比,较短的压缩流水线为分支密集型控制代码提供了更高效的性能。 此外,动态可重配置流水线是可扩展的,允许PE阵列中的每个处理元件(PE)同步地扩展和压缩流水线,从而允许iVLIW操作在每个PE中独立执行。 这是通过并行运行分布式管道,每个PE中的一个和控制器序列处理器(SP)中实现的。