公开(公告)号：US20190163656A1

公开(公告)日：2019-05-30

申请号：US15826065

申请日：2017-11-29

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

Inventor： Eric Christopher MORTON ,  Elizabeth COOPER ,  William L. WALKER ,  Douglas Benson HUNT ,  Richard Martin BORN ,  Richard H. Lee ,  Paul C. MIRANDA ,  Philip NG ,  Paul MOYER

IPC: G06F13/28 ,  G06F12/0891 ,  G06F12/0862 ,  G06F12/0815 ,  G06F12/0893

CPC classification number: G06F13/28 ,  G06F12/0815 ,  G06F12/0862 ,  G06F12/0891 ,  G06F12/0893

Abstract: A method for steering data for an I/O write operation includes, in response to receiving the I/O write operation, identifying, at an interconnect fabric, a cache of one of a plurality of compute complexes as a target cache for steering the data based on at least one of: a software-provided steering indicator, a steering configuration implemented at boot initialization, and coherency information for a cacheline associated with the data. The method further includes directing, via the interconnect fabric, the identified target cache to cache the data from the I/O write operation. The data is temporarily buffered at the interconnect fabric, and if the target cache attempts to fetch the data while the data is still buffered at the interconnect fabric, the interconnect fabric provides a copy of the buffered data in response to the fetch operation instead of initiating a memory access operation to obtain the data from memory.

公开(公告)号：US20190317546A1

公开(公告)日：2019-10-17

申请号：US15954051

申请日：2018-04-16

Applicant: ADVANCED MICRO DEVICES, INC.

Inventor： Richard Martin BORN ,  Stephen Victor KOSONOCKY ,  Miguel RODRIGUEZ

IPC: G06F1/08 ,  H03K5/00 ,  G06F1/28 ,  G06F1/30

Abstract: A power regulator provides current to a processing unit. A clock distribution network provides a clock signal to the processing unit. A level-based droop detector monitors a voltage of the current provided to the processing unit and provides a droop detection signal to the clock distribution network in response to the voltage falling below a first threshold voltage. The clock distribution network decreases a frequency of a clock signal provided to the processing unit in response to receiving the droop detection signal. The level-based droop detector interrupts the droop detection signal that is provided to the clock distribution network in response to the voltage rising above a second threshold voltage. The clock distribution network increases the frequency of the clock signal provided to the processing unit in response to interruption of the droop detection signal.