公开(公告)号：US20200327010A1

公开(公告)日：2020-10-15

申请号：US16384614

申请日：2019-04-15

Applicant: NVIDIA CORPORATION

Inventor： Ashutosh PANDEY ,  Jay GUPTA ,  Kaushal AGARWAL ,  Justin BENNETT ,  Srinivas Santosh Kumar MADUGULA

IPC: G06F11/10 ,  G06F12/06 ,  G06F12/0882 ,  G06F9/46 ,  G06F9/48 ,  G06F13/40

Abstract: Techniques are disclosed for reducing the time required to read and write data to memory. Data reads and/or writes can be delayed when error correction code (ECC) bits, which are used to detect and/or correct data corruption, are written to memory. Writing ECC bits can take longer in some instances than writing data bits because an ECC write may involve a read/modify/write operation, as opposed to just simply writing the bits to memory. Some latencies associated with writing ECC bits can be hidden by interleaving ECC writes with data writes. However, if insufficient data writes are available for interleaving, hiding such latencies become difficult. Thus, various techniques are disclosed, for example, where ECC writes are deferred until a sufficient number of data writes become available for interleaving. By interleaving ECC writes, the disclosed techniques decrease the overall time required to read and write data to memory.

公开(公告)号：US20240403048A1

公开(公告)日：2024-12-05

申请号：US18325806

申请日：2023-05-30

Applicant: NVIDIA CORPORATION

Inventor： Kaushal AGARWAL ,  Jonathon Stuart Ramsay EVANS

IPC: G06F9/30 ,  G06F9/52

Abstract: Various embodiments include techniques for launching processing work in a computing system. The disclosed techniques include load and store operations that specify a category. The disclosed techniques further include barrier instructions that specify a category. A processing unit of the computing system executes a set of load and store operations that specify various categories. When the processor subsequently executes a barrier instruction that specifies a category, the barrier instruction waits for data for only load and store operations that specify the same category. After the barrier instruction completes execution, the processing unit can launch processes that are dependent on data from load and store operations of the specified category, even if data from load and store operations of other categories is still pending. As a result, the processing unit can launch processes as soon as the relevant data is available without waiting for nonrelevant data.