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    Techniques for efficiently synchronizing data transmissions on a network
    2.
    发明授权
    Techniques for efficiently synchronizing data transmissions on a network 有权

    公开(公告)号：US10789194B2

    公开(公告)日：2020-09-29

    申请号：US16364565

    申请日：2019-03-26

    申请人： NVIDIA Corporation

    发明人： Larry R. Dennison ,  Mark Hummel ,  Glenn Dearth

    IPC分类号： G06F13/40 ,  G06F3/06 ,  G06F13/00 ,  G06F9/38 ,  G06F12/0891

    摘要： Systems and techniques for synchronizing transactions between processing devices on an interconnection network are provided. Upon receiving a stream of posted transactions followed by a flush transaction from a source processing device connected to the interconnection network, the flush transaction is trapped before it enters the interconnecting network. Subsequently, based on monitoring for responses received from a destination processing device for transactions corresponding to the posted transactions, a flush response is generated and returned to the source processing device. The described techniques enable efficient synchronizing posted writes, posted atomics and the like over complex interconnection fabrics such that a first GPU can write data to a second GPU so that a third GPU can safely consume the data written to the second GPU.

    Techniques for reducing the overhead of providing responses in a computing network
    5.
    发明授权
    Techniques for reducing the overhead of providing responses in a computing network 有权

    公开(公告)号：US11038800B2

    公开(公告)日：2021-06-15

    申请号：US16553511

    申请日：2019-08-28

    申请人： Nvidia Corporation

    发明人： Glenn Dearth ,  Mark Hummel ,  Jonathan Owen ,  Mike Osborn ,  John Wortman ,  Rich Reeves

    IPC分类号： H04L12/801 ,  H04L7/00 ,  H04L12/743 ,  H04L12/947 ,  G06F13/16 ,  G06F13/30 ,  G06F13/42

    摘要： An endpoint in a network may make posted or non-posted write requests to another endpoint in the network. For a non-posted write request, the target endpoint provides a response to the requesting endpoint indicating that the write request has been serviced. For a posted write request, the target endpoint does not provide such an acknowledgment. Hence, posted write requests have lower overhead, but they suffer from potential synchronization and resiliency issues. While non-posted write requests do not have those issues, they cause increased load on the network because such requests require the target endpoint to acknowledge each write request. Introduced herein is a network operation technique that uses non-posted transactions while maintaining a load overhead of the network as a manageable level. The introduced technique reduces the load overhead of the non-posted write requests by collapsing and reducing a number of the responses.

    TECHNIQUES FOR REDUCING CONGESTION IN A COMPUTER NETWORK
    6.
    发明申请
    TECHNIQUES FOR REDUCING CONGESTION IN A COMPUTER NETWORK 审中-公开

    公开(公告)号：US20190297018A1

    公开(公告)日：2019-09-26

    申请号：US16277349

    申请日：2019-02-15

    申请人： Nvidia Corporation

    发明人： Glenn Dearth ,  Nan Jiang ,  John Wortman ,  Alex Ishii ,  Mark Hummel ,  Rich Reeves

    IPC分类号： H04L12/801 ,  H04L12/825 ,  H04L12/26

    摘要： Multiple processors are often used in computing systems to solve very large, complex problems, such as those encountered in artificial intelligence. Such processors typically exchange data among each other via an interconnect fabric (such as, e.g., a group of network connections and switches) in solving such complex problems. The amount of data injected into the interconnect fabric by the processors can at times overwhelm the interconnect fabric preventing some of the processors from communicating with each other. To address this problem, techniques are disclosed to enable, for example, processors that are connected to an interconnect fabric to coordinate and control the amount of data injected so that the interconnect fabric does not get overwhelmed.

    NETWORK ROUTING USING AGGREGATED LINKS
    9.
    发明申请
    NETWORK ROUTING USING AGGREGATED LINKS 有权

    公开(公告)号：US20210014156A1

    公开(公告)日：2021-01-14

    申请号：US16700611

    申请日：2019-12-02

    申请人： Nvidia Corporation

    发明人： Glenn Dearth ,  Mark Hummel

    IPC分类号： H04L12/709 ,  H04L12/721 ,  H04L12/751 ,  H04L12/707

    摘要： Introduced herein is a routing technique that, for example, routes a transaction to a destination port over a network that supports link aggregation and multi-port connection. In one embodiment, two tables that can be searched based on the target and supplemental routing IDs of the transaction are utilized to route the transaction to the proper port of the destination endpoint. In an embodiment, the first table provides a list of available ports at each hop/route point that can route the transaction to the destination endpoint, and the second table provides a supplemental routing ID that can select a specific group of ports from the first table that can correctly route the transaction to the proper port.