会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 35. 发明申请
    • METHOD AND APPARATUS FOR EFFICIENTLY TRACKING QUEUE ENTRIES RELATIVE TO A TIMESTAMP
    • 有效跟踪与TIMESTAMP相关的队列的方法和设备
    • US20090006672A1
    • 2009-01-01
    • US11768800
    • 2007-06-26
    • Matthias A. BlumrichDong ChenAlan G. GaraMark E. GiampapaPhilip HeidelbergerMartin OhmachtValentina SalapuraPavlos Vranas
    • Matthias A. BlumrichDong ChenAlan G. GaraMark E. GiampapaPhilip HeidelbergerMartin OhmachtValentina SalapuraPavlos Vranas
    • G06F3/00G06F1/04
    • G06F12/0835G06F12/0831
    • An apparatus and method for tracking coherence event signals transmitted in a multiprocessor system. The apparatus comprises a coherence logic unit, each unit having a plurality of queue structures with each queue structure associated with a respective sender of event signals transmitted in the system. A timing circuit associated with a queue structure controls enqueuing and dequeuing of received coherence event signals, and, a counter tracks a number of coherence event signals remaining enqueued in the queue structure and dequeued since receipt of a timestamp signal. A counter mechanism generates an output signal indicating that all of the coherence event signals present in the queue structure at the time of receipt of the timestamp signal have been dequeued. In one embodiment, the timestamp signal is asserted at the start of a memory synchronization operation and, the output signal indicates that all coherence events present when the timestamp signal was asserted have completed. This signal can then be used as part of the completion condition for the memory synchronization operation.
    • 一种用于跟踪在多处理器系统中发送的相干事件信号的装置和方法。 该装置包括相干逻辑单元,每个单元具有多个队列结构,每个队列结构与在系统中传输的事件信号的相应发送者相关联。 与队列结构相关联的定时电路控制接收的相干事件信号的排队和出队,并且计数器跟踪队列结构中剩余入队的多个相干事件信号,并且从接收到时间戳信号起出队。 计数器机构产生一个输出信号,指示在接收时间戳信号时存在于队列结构中的所有相干事件信号已经出队。 在一个实施例中,时间戳信号在存储器同步操作的开始被断言,并且输出信号指示当时间戳信号被断言时存在的所有相干事件已经完成。 然后可以将该信号用作存储器同步操作的完成条件的一部分。
    • 36. 发明申请
    • DMA SHARED BYTE COUNTERS IN A PARALLEL COMPUTER
    • DMA并发计算机中的共享字节计数器
    • US20090006666A1
    • 2009-01-01
    • US11768781
    • 2007-06-26
    • Dong ChenAlan G. GaraPhilip HeidelbergerPavlos Vranas
    • Dong ChenAlan G. GaraPhilip HeidelbergerPavlos Vranas
    • G06F13/28
    • G06F13/28Y02D10/14
    • A parallel computer system is constructed as a network of interconnected compute nodes. Each of the compute nodes includes at least one processor, a memory and a DMA engine. The DMA engine includes a processor interface for interfacing with the at least one processor, DMA logic, a memory interface for interfacing with the memory, a DMA network interface for interfacing with the network, injection and reception byte counters, injection and reception FIFO metadata, and status registers and control registers. The injection FIFOs maintain memory locations of the injection FIFO metadata memory locations including its current head and tail, and the reception FIFOs maintain the reception FIFO metadata memory locations including its current head and tail. The injection byte counters and reception byte counters may be shared between messages.
    • 并行计算机系统被构造为互连计算节点的网络。 每个计算节点包括至少一个处理器,存储器和DMA引擎。 DMA引擎包括用于与至少一个处理器连接的处理器接口,DMA逻辑,用于与存储器连接的存储器接口,用于与网络接口的DMA网络接口,注入和接收字节计数器,注入和接收FIFO元数据, 和状态寄存器和控制寄存器。 注入FIFO保持注入FIFO元数据存储器位置的存储器位置,包括其当前头部和尾部,并且接收FIFO保持包括其当前头部和尾部的接收FIFO元数据存储器位置。 注入字节计数器和接收字节计数器可以在消息之间共享。
    • 39. 发明申请
    • LOW LATENCY MEMORY ACCESS AND SYNCHRONIZATION
    • 低延迟存储器访问和同步
    • US20070204112A1
    • 2007-08-30
    • US11617276
    • 2006-12-28
    • Matthias BlumrichDong ChenPaul CoteusAlan GaraMark GiampapaPhilip HeidelbergerDirk HoenickeMartin OhmachtBurkhard Steinmacher-BurowTodd TakkenPavlos Vranas
    • Matthias BlumrichDong ChenPaul CoteusAlan GaraMark GiampapaPhilip HeidelbergerDirk HoenickeMartin OhmachtBurkhard Steinmacher-BurowTodd TakkenPavlos Vranas
    • G06F12/14
    • G06F12/0862G06F9/52G06F2212/6028
    • A low latency memory system access is provided in association with a weakly-ordered multiprocessor system. Each processor in the multiprocessor shares resources, and each shared resource has an associated lock within a locking device that provides support for synchronization between the multiple processors in the multiprocessor and the orderly sharing of the resources. A processor only has permission to access a resource when it owns the lock associated with that resource, and an attempt by a processor to own a lock requires only a single load operation, rather than a traditional atomic load followed by store, such that the processor only performs a read operation and the hardware locking device performs a subsequent write operation rather than the processor. A simple prefetching for non-contiguous data structures is also disclosed. A memory line is redefined so that in addition to the normal physical memory data, every line includes a pointer that is large enough to point to any other line in the memory, wherein the pointers to determine which memory line to prefetch rather than some other predictive algorithm. This enables hardware to effectively prefetch memory access patterns that are non-contiguous, but repetitive.
    • 与弱有序的多处理器系统相关联地提供低延迟存储器系统访问。 多处理器中的每个处理器共享资源,并且每个共享资源在锁定设备内具有关联的锁,其提供对多处理器中的多个处理器之间的同步的支持以及资源的有序共享。 当处理器拥有与该资源相关联的锁定时,处理器仅具有访问资源的权限,并且处理器拥有锁的尝试仅需要单个加载操作,而不是传统的原子负载后跟存储,使得处理器 只执行读取操作,并且硬件锁定装置执行后续的写入操作而不是处理器。 还公开了用于非连续数据结构的简单预取。 重新定义存储器线,使得除了正常的物理存储器数据之外,每行包括足够大的指针以指向存储器中的任何其他行,其中指针用于确定要预取的存储器行而不是一些其它预测 算法。 这使得硬件能够有效地预取不连续但重复的存储器访问模式。