公开(公告)号：US20230195664A1

公开(公告)日：2023-06-22

申请号：US17558798

申请日：2021-12-22

Applicant: ADVANCED MICRO DEVICES, INC. ,  ATI TECHNOLOGIES ULC

Inventor： Sean KEELY ,  Joseph L. GREATHOUSE ,  Hari THANGIRALA ,  Alan D. SMITH ,  Milind N. NEMLEKAR

IPC: G06F13/28 ,  G06F13/16

CPC classification number: G06F13/28 ,  G06F13/1668

Abstract: A method for software management of DMA transfer commands includes receiving a DMA transfer command instructing a data transfer by a first processor device. Based at least in part on a determination of runtime system resource availability, a device different from the first processor device is assigned to assist in transfer of at least a first portion of the data transfer. In some embodiments, the DMA transfer command instructs the first processor device to write a copy of data to a third processor device. Software analyzes network bus congestion at a shared communications bus and initiates DMA transfer via a multi-hop communications path to bypass the congested network bus.

公开(公告)号：US20240419358A1

公开(公告)日：2024-12-19

申请号：US18665840

申请日：2024-05-16

Applicant: ADVANCED MICRO DEVICES, INC. ,  ATI TECHNOLOGIES ULC

Inventor： Joseph L. GREATHOUSE ,  Sean KEELY ,  Alan D. SMITH ,  Anthony ASARO ,  Ling-Ling WANG ,  Milind N NEMLEKAR ,  Hari THANGIRALA ,  Felix KUEHLING

IPC: G06F3/06 ,  G06F13/28

Abstract: A method for hardware management of DMA transfer commands includes accessing, by a first DMA engine, a DMA transfer command and determining a first portion of a data transfer requested by the DMA transfer command. Transfer of a first portion of the data transfer by the first DMA engine is initiated based at least in part on the DMA transfer command. Similarly, a second portion of the data transfer by a second DMA engine is initiated based at least in part on the DMA transfer command. After transferring the first portion and the second portion of the data transfer, an indication is generated that signals completion of the data transfer requested by the DMA transfer command.