公开(公告)号：US20190266102A1

公开(公告)日：2019-08-29

申请号：US16410828

申请日：2019-05-13

Applicant: Apple Inc.

Inventor： Wolfgang H. Klingauf ,  Kenneth C. Dyke ,  Karthik Ramani ,  Winnie W. Yeung ,  Anthony P. DeLaurier ,  Luc R. Semeria ,  David A. Gotwalt ,  Srinivasa Rangan Sridharan ,  Muditha Kanchana

IPC: G06F12/123 ,  G06F12/0815 ,  G06F12/0804 ,  G06F12/0808

Abstract: Systems, apparatuses, and methods for efficiently allocating data in a cache are described. In various embodiments, a processor decodes an indication in a software application identifying a temporal data set. The data set is flagged with a data set identifier (DSID) indicating temporal data to drop after consumption. When the data set is allocated in a cache, the data set is stored with a non-replaceable attribute to prevent a cache replacement policy from evicting the data set before it is dropped. A drop command with an indication of the DSID of the data set is later issued after the data set is read (consumed). A copy of the data set is not written back to the lower-level memory although the data set is removed from the cache. An interrupt is generated to notify firmware or other software of the completion of the drop command.

公开(公告)号：US10970223B2

公开(公告)日：2021-04-06

申请号：US16410828

申请日：2019-05-13

Applicant: Apple Inc.

Inventor： Wolfgang H. Klingauf ,  Kenneth C. Dyke ,  Karthik Ramani ,  Winnie W. Yeung ,  Anthony P. DeLaurier ,  Luc R. Semeria ,  David A. Gotwalt ,  Srinivasa Rangan Sridharan ,  Muditha Kanchana

IPC: G06F12/08 ,  G06F12/0891 ,  G06F12/0804 ,  G06F12/0808 ,  G06F12/0815 ,  G06F12/123 ,  G06F12/0895 ,  G06F12/126 ,  G06F12/12

Abstract: Systems, apparatuses, and methods for efficiently allocating data in a cache are described. In various embodiments, a processor decodes an indication in a software application identifying a temporal data set. The data set is flagged with a data set identifier (DSID) indicating temporal data to drop after consumption. When the data set is allocated in a cache, the data set is stored with a non-replaceable attribute to prevent a cache replacement policy from evicting the data set before it is dropped. A drop command with an indication of the DSID of the data set is later issued after the data set is read (consumed). A copy of the data set is not written back to the lower-level memory although the data set is removed from the cache. An interrupt is generated to notify firmware or other software of the completion of the drop command.

公开(公告)号：US10289565B2

公开(公告)日：2019-05-14

申请号：US15610008

申请日：2017-05-31

Applicant: Apple Inc.

Inventor： Wolfgang H. Klingauf ,  Kenneth C. Dyke ,  Karthik Ramani ,  Winnie W. Yeung ,  Anthony P. DeLaurier ,  Luc R. Semeria ,  David A. Gotwalt ,  Srinivasa Rangan Sridharan ,  Muditha Kanchana

IPC: G06F12/08 ,  G06F12/12 ,  G06F12/123 ,  G06F12/0808 ,  G06F12/0815 ,  G06F12/0804

Abstract: Systems, apparatuses, and methods for efficiently allocating data in a cache are described. In various embodiments, a processor decodes an indication in a software application identifying a temporal data set. The data set is flagged with a data set identifier (DSID) indicating temporal data to drop after consumption. When the data set is allocated in a cache, the data set is stored with a non-replaceable attribute to prevent a cache replacement policy from evicting the data set before it is dropped. A drop command with an indication of the DSID of the data set is later issued after the data set is read (consumed). A copy of the data set is not written back to the lower-level memory although the data set is removed from the cache. An interrupt is generated to notify firmware or other software of the completion of the drop command.

公开(公告)号：US20180181491A1

公开(公告)日：2018-06-28

申请号：US15389153

申请日：2016-12-22

Applicant: Apple Inc.

Inventor： Anthony P. DeLaurier ,  Luc R. Semeria ,  Gokhan Avkarogullari ,  David A. Gotwalt ,  Robert S. Hartog ,  Michael J. Swift

IPC: G06F12/0891 ,  G06F12/0895

CPC classification number: G06F12/0891 ,  G06F12/0811 ,  G06F12/084 ,  G06F12/0864 ,  G06F12/0895 ,  G06F12/1063 ,  G06F12/109 ,  G06F2212/1024 ,  G06F2212/302 ,  G06F2212/455 ,  G06F2212/60 ,  G06F2212/657

Abstract: Techniques are disclosed relating to flushing cache lines. In some embodiments, a graphics processing unit includes a cache and one or more storage elements configured to store a plurality of command buffers that include instructions executable to manipulate data stored in the cache. In some embodiments, ones of the cache lines in the cache are configured to store data to be operated on by instructions in the command buffers and a first tag portion that identifies a command buffer that has stored data in the cache line. In some embodiments, the graphics processing unit is configured to receive a request to flush cache lines that store data of a particular command buffer, and to flush ones of the cache lines having first tag portions indicating the particular command buffer as having data stored in the cache lines while maintaining data stored in other ones of the cache lines as valid.

公开(公告)号：US20180349291A1

公开(公告)日：2018-12-06

申请号：US15610008

申请日：2017-05-31

Applicant: Apple Inc.

Inventor： Wolfgang H. Klingauf ,  Kenneth C. Dyke ,  Karthik Ramani ,  Winnie W. Yeung ,  Anthony P. DeLaurier ,  Luc R. Semeria ,  David A. Gotwalt ,  Srinivasa Rangan Sridharan ,  Muditha Kanchana

IPC: G06F12/123 ,  G06F12/0808 ,  G06F12/0815 ,  G06F12/0804

CPC classification number: G06F12/123 ,  G06F12/0804 ,  G06F12/0808 ,  G06F12/0815 ,  G06F2212/608 ,  G06F2212/621 ,  G06F2212/69

Abstract: Systems, apparatuses, and methods for efficiently allocating data in a cache are described. In various embodiments, a processor decodes an indication in a software application identifying a temporal data set. The data set is flagged with a data set identifier (DSID) indicating temporal data to drop after consumption. When the data set is allocated in a cache, the data set is stored with a non-replaceable attribute to prevent a cache replacement policy from evicting the data set before it is dropped. A drop command with an indication of the DSID of the data set is later issued after the data set is read (consumed). A copy of the data set is not written back to the lower-level memory although the data set is removed from the cache. An interrupt is generated to notify firmware or other software of the completion of the drop command.

公开(公告)号：US09952655B1

公开(公告)日：2018-04-24

申请号：US15177793

申请日：2016-06-09

Applicant: Apple Inc.

Inventor： Jason P. Jane ,  Richard W. Schreyer ,  Michael J. E. Swift ,  Gokhan Avkarogullari ,  Luc R. Semeria ,  Patrick Y. Law

IPC: G06F9/30 ,  G06T1/20 ,  G06F1/28 ,  G06F1/32 ,  G06F9/4401 ,  G06F9/44

CPC classification number: G06F1/3287 ,  G06F1/28 ,  G06F1/32 ,  G06F1/3203 ,  G06F1/3234 ,  G06F1/3246 ,  G06F9/30145 ,  G06F9/442 ,  G06T1/20 ,  G06T2200/28

Abstract: In one embodiment, a system controls a duty cycle of a processor (e.g. a graphics processing unit (GPU)) to manage power. The GPU may include a snoop indicator that may control whether or not the GPU captures and/or responds to communications from another processor (e.g. a central processing unit (CPU) that executes a driver associate with the GPU). A snooze indicator may control whether or not the GPU is automatically repowered at the start of the next frame, or is repowered only if the communication indicating additional work has been received. In an embodiment, the GPU mode controls discussed above may permit the GPU firmware executed with the GPU itself to control duty cycle power down, independent of the driver executing on the CPU.