Peripheral Memory Management
    1.
    发明申请
    Peripheral Memory Management 审中-公开
    外设内存管理

    公开(公告)号:US20130145055A1

    公开(公告)日:2013-06-06

    申请号:US13309753

    申请日:2011-12-02

    IPC分类号: G06F13/28

    摘要: The present system enables an input/output (I/O) device to request memory for performing a direct memory access (DMA) of system memory. Further, the system uses an input/output memory management unit (IOMMU) to determine whether or not the system memory is available. The IOMMU notifies an operating system associated with the system memory if the system memory is not available, such that the operating system allocates non-system memory for use by the I/O device to perform the DMA.

    摘要翻译: 本系统使得输入/输出(I / O)设备能够请求存储器来执行系统存储器的直接存储器访问(DMA)。 此外,系统使用输入/输出存储器管理单元(IOMMU)来确定系统存储器是否可用。 如果系统内存不可用,IOMMU将通知与系统内存相关联的操作系统,以便操作系统分配非系统内存供I / O设备使用以执行DMA。

    Efficient memory and resource management
    2.
    发明授权
    Efficient memory and resource management 有权
    高效的内存和资源管理

    公开(公告)号:US08719464B2

    公开(公告)日:2014-05-06

    申请号:US13308211

    申请日:2011-11-30

    IPC分类号: G06F13/28 G06F21/00

    CPC分类号: G06F13/28

    摘要: The present system enables passing a pointer, associated with accessing data in a memory, to an input/output (I/O) device via an input/output memory management unit (IOMMU). The I/O device accesses the data in the memory via the IOMMU without copying the data into a local I/O device memory. The I/O device can perform an operation on the data in the memory based on the pointer, such that I/O device accesses the memory without expensive copies.

    摘要翻译: 本系统使得能够通过输入/输出存储器管理单元(IOMMU)将与访问存储器中的数据相关联的指针传递到输入/输出(I / O)设备。 I / O设备通过IOMMU访问存储器中的数据,而不将数据复制到本地I / O设备存储器中。 I / O设备可以基于指针对存储器中的数据执行操作,使得I / O设备访问存储器而不需要昂贵的副本。

    Efficient Memory and Resource Management
    3.
    发明申请
    Efficient Memory and Resource Management 有权
    高效的内存和资源管理

    公开(公告)号:US20130138840A1

    公开(公告)日:2013-05-30

    申请号:US13308211

    申请日:2011-11-30

    IPC分类号: G06F13/28

    CPC分类号: G06F13/28

    摘要: The present system enables passing a pointer, associated with accessing data in a memory, to an input/output (I/O) device via an input/output memory management unit (IOMMU). The I/O device accesses the data in the memory via the IOMMU without copying the data into a local I/O device memory. The I/O device can perform an operation on the data in the memory based on the pointer, such that I/O device accesses the memory without expensive copies.

    摘要翻译: 本系统使得能够通过输入/输出存储器管理单元(IOMMU)将与访问存储器中的数据相关联的指针传递到输入/输出(I / O)设备。 I / O设备通过IOMMU访问存储器中的数据,而不将数据复制到本地I / O设备存储器中。 I / O设备可以基于指针对存储器中的数据执行操作,使得I / O设备访问存储器而不需要昂贵的副本。

    MEMORY TYPES FOR CACHING POLICIES
    4.
    发明申请
    MEMORY TYPES FOR CACHING POLICIES 审中-公开
    缓存政策的内存类型

    公开(公告)号:US20130262736A1

    公开(公告)日:2013-10-03

    申请号:US13436342

    申请日:2012-03-30

    IPC分类号: G06F12/10 G06F12/08

    CPC分类号: G06F12/1081 G06F12/0888

    摘要: The present system enables receiving a request from an I/O device to translate a virtual address to a physical address to access the page in system memory. One or more memory attributes of the page defining a cacheability characteristic of the page is identified. A response including the physical address and the cacheability characteristic of the page is sent to the I/O device.

    摘要翻译: 本系统能够接收来自I / O设备的请求,以将虚拟地址转换为物理地址以访问系统存储器中的页面。 识别页面的一个或多个存储器属性来定义页面的可高速缓存性能。 包括页面的物理地址和缓存性能的响应被发送到I / O设备。

    Visibility Ordering in a Memory Model for a Unified Computing System
    5.
    发明申请
    Visibility Ordering in a Memory Model for a Unified Computing System 有权
    在统一计算系统的内存模型中的可见性排序

    公开(公告)号:US20130263141A1

    公开(公告)日:2013-10-03

    申请号:US13588310

    申请日:2012-08-17

    IPC分类号: G06F9/46

    摘要: Provided is a method of permitting the reordering of a visibility order of operations in a computer arrangement configured for permitting a first processor and a second processor threads to access a shared memory. The method includes receiving in a program order, a first and a second operation in a first thread and permitting the reordering of the visibility order for the operations in the shared memory based on the class of each operation. The visibility order determines the visibility in the shared memory, by a second thread, of stored results from the execution of the first and second operations.

    摘要翻译: 提供了一种允许重新排序配置为允许第一处理器和第二处理器线程访问共享存储器的计算机配置中的操作的可见性顺序的方法。 该方法包括以程序顺序接收第一线程中的第一和第二操作,并且基于每个操作的类别允许对共享存储器中的操作的可见性顺序的重新排序。 可见性顺序确定共享存储器(第二个线程)中可执行第一和第二操作的存储结果的可见性。

    Visibility ordering in a memory model for a unified computing system
    6.
    发明授权
    Visibility ordering in a memory model for a unified computing system 有权
    在统一计算系统的内存模型中的可见性排序

    公开(公告)号:US08984511B2

    公开(公告)日:2015-03-17

    申请号:US13588310

    申请日:2012-08-17

    摘要: Provided is a method of permitting the reordering of a visibility order of operations in a computer arrangement configured for permitting a first processor and a second processor threads to access a shared memory. The method includes receiving in a program order, a first and a second operation in a first thread and permitting the reordering of the visibility order for the operations in the shared memory based on the class of each operation. The visibility order determines the visibility in the shared memory, by a second thread, of stored results from the execution of the first and second operations.

    摘要翻译: 提供了一种允许重新排序配置为允许第一处理器和第二处理器线程访问共享存储器的计算机配置中的操作的可见性顺序的方法。 该方法包括以程序顺序接收第一线程中的第一和第二操作,并且基于每个操作的类别允许对共享存储器中的操作的可见性顺序的重新排序。 可见性顺序确定共享存储器(第二个线程)中可执行第一和第二操作的存储结果的可见性。

    Managing coherent memory between an accelerated processing device and a central processing unit
    9.
    发明授权
    Managing coherent memory between an accelerated processing device and a central processing unit 有权
    管理加速处理设备和中央处理单元之间的连贯内存

    公开(公告)号:US09430391B2

    公开(公告)日:2016-08-30

    申请号:US13601126

    申请日:2012-08-31

    摘要: Existing multiprocessor computing systems often have insufficient memory coherency and, consequently, are unable to efficiently utilize separate memory systems. Specifically, a CPU cannot effectively write to a block of memory and then have a GPU access that memory unless there is explicit synchronization. In addition, because the GPU is forced to statically split memory locations between itself and the CPU, existing multiprocessor computing systems are unable to efficiently utilize the separate memory systems. Embodiments described herein overcome these deficiencies by receiving a notification within the GPU that the CPU has finished processing data that is stored in coherent memory, and invalidating data in the CPU caches that the GPU has finished processing from the coherent memory. Embodiments described herein also include dynamically partitioning a GPU memory into coherent memory and local memory through use of a probe filter.

    摘要翻译: 现有的多处理器计算系统通常具有不足的存储器一致性,因此不能有效地利用单独的存储器系统。 具体来说,CPU无法有效地写入内存块,然后除了有明确的同步之外,还可以对存储器进行GPU访问。 另外,由于GPU被迫静态分割其本身与CPU之间的存储器位置,所以现有的多处理器计算系统不能有效地利用单独的存储器系统。 本文所描述的实施例通过在GPU内接收到通知,CPU已经完成处理存储在相干存储器中的数据,并使CPU缓冲器中的数据无效,GPU已经从相干存储器完成处理来克服这些缺陷。 本文描述的实施例还包括通过使用探针滤波器来将GPU存储器动态地划分为相干存储器和本地存储器。

    Cache management for memory operations
    10.
    发明授权
    Cache management for memory operations 有权
    内存操作缓存管理

    公开(公告)号:US08935475B2

    公开(公告)日:2015-01-13

    申请号:US13436767

    申请日:2012-03-30

    IPC分类号: G06F12/02 G06F12/08 G06F12/12

    摘要: Embodiments of the present invention provides for the execution of threads and/or workitems on multiple processors of a heterogeneous computing system in a manner that they can share data correctly and efficiently. Disclosed method, system, and article of manufacture embodiments include, responsive to an instruction from a sequence of instructions of a work-item, determining an ordering of visibility to other work-items of one or more other data items in relation to a particular data item, and performing at least one cache operation upon at least one of the particular data item or the other data items present in any one or more cache memories in accordance with the determined ordering. The semantics of the instruction includes a memory operation upon the particular data item.

    摘要翻译: 本发明的实施例提供在异构计算系统的多个处理器上执行线程和/或工作项,以使得它们可以正确且有效地共享数据。 公开的方法,系统和制品实施例包括响应于来自工作项目的指令序列的指令,确定与特定数据相关的一个或多个其他数据项的其他工作项的可见性的排序 并且根据所确定的顺序对存在于任何一个或多个高速缓存存储器中的特定数据项或其他数据项中的至少一个执行至少一个高速缓存操作。 指令的语义包括对特定数据项的存储器操作。