Title:
DATA ACCESS METHOD, DEVICE AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/035813
Kind Code:
A1
Abstract:
The present invention relates to the field of computers, and provides a data access method, device and system configured to reduce a data access latency of a GPU. The method comprises: a GPU acquires an access request for a first memory page, and the access request carries a physical address of the first memory page (101); the GPU queries, according to the physical address of the first memory page and a predetermined correspondence relationship between physical addresses and identifiers of memory pages, whether a most recently used (MRU) table item corresponding to the physical address of the first memory page in an MRU table comprises an identifier of the first memory page (102); if the MRU table item corresponding to the physical address of the first memory page does not comprise the identifier of the first memory page, then the GPU sends a page transfer request to a central processing unit (CPU), such that the CPU stores, according to the page transfer request, the first memory page to a video memory (103); and the GPU accesses the first memory page in the video memory (104).
Inventors:
WANG TAO (CN)
ZHANG GUANGFEI (CN)
SONG FENGLONG (CN)
ZHANG GUANGFEI (CN)
SONG FENGLONG (CN)
Application Number:
PCT/CN2015/088872
Publication Date:
March 09, 2017
Filing Date:
September 02, 2015
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G06F17/30
Foreign References:
| CN103198514A | 2013-07-10 | |||
| CN103020320A | 2013-04-03 | |||
| CN103995684A | 2014-08-20 | |||
| CN103200128A | 2013-07-10 | |||
| CN102981806A | 2013-03-20 | |||
| US20140146065A1 | 2014-05-29 |
Attorney, Agent or Firm:
BEIJING ZBSD PATENT&TRADEMARK AGENT LTD. (CN)
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