公开(公告)号：US11237882B2

公开(公告)日：2022-02-01

申请号：US16235515

申请日：2018-12-28

Applicant: Graphcore Limited

Inventor： Ola Tørudbakken ,  Daniel John Pelham Wilkinson ,  Richard Luke Southwell Osborne ,  Brian Manula ,  Harald Høeg

IPC: G06F9/46 ,  G06F9/52 ,  G06N20/00 ,  G06F3/06 ,  G06N5/02

Abstract: A gateway for interfacing a host with a subsystem for acting as a work accelerator to the host. The gateway enables the transfer of batches of data to the subsystem at precompiled data exchange synchronisation points. The gateway comprises a streaming engine having a data mover engine and a memory management engine, the data mover engine and memory management engine being configured to execute instructions in coordination from work descriptors. The memory management engine is configured to execute instructions from the work descriptor to transfer data between external storage and the local memory associated with the gateway. The data mover engine is configured to execute instructions from the work descriptor to transfer data between the local memory associated with the gateway and the subsystem.

公开(公告)号：US10970131B2

公开(公告)日：2021-04-06

申请号：US16235265

申请日：2018-12-28

Applicant: Graphcore Limited

Inventor： Ola Tørudbakken ,  Daniel John Pelham Wilkinson ,  Richard Luke Southwell Osborne ,  Stephen Felix ,  Matthew David Fyles ,  Brian Manula ,  Harald Høeg

IPC: G06F9/52 ,  G06F16/901 ,  G06F9/30 ,  G06F9/38 ,  G06F9/54 ,  G06F15/167 ,  G06F15/173 ,  H04L12/801 ,  H04L29/06 ,  H04L29/08 ,  G06F9/48

Abstract: A gateway for interfacing a host with a subsystem for acting as a work accelerator to the host, the gateway enabling the transfer of batches of data to and from the subsystem at pre-compiled data exchange synchronisation points attained by the subsystem. The gateway is configured to: receive from a storage system data determined by the host to be processed by the subsystem; store a number of credits indicating the availability of data for transfer to the subsystem at each pre-compiled data exchange synchronisation point; receive a synchronisation request from the subsystem when it attains a data exchange synchronisation point; and in response to determining that the number of credits comprises a non-zero number of credits: transmit a synchronisation acknowledgment to the subsystem; and cause the received data to be transferred to the subsystem.