Invention Grant
- Patent Title: Graphics processor sub-domain voltage regulation
- Patent Title (中): 图形处理器子域电压调节
-
Application No.: US14134598Application Date: 2013-12-19
-
Publication No.: US09563263B2Publication Date: 2017-02-07
- Inventor: Subramaniam Maiyuran , Muhammad M. Khellah , James W. Tschanz
- Applicant: Intel Corporation
- Applicant Address: US CA Santa Clara
- Assignee: Intel Corporation
- Current Assignee: Intel Corporation
- Current Assignee Address: US CA Santa Clara
- Agency: Green, Howard & Mughal, LLP
- Main IPC: G06F1/32
- IPC: G06F1/32

Abstract:
Voltage regulation of processor sub-domains supplied by a same voltage domain power supply rail. Voltage to certain logic units within the voltage domain may be reduced relative to other logic units of the voltage domain, reducing idle time at high power. In an embodiment, a first voltage-regulated sub-domain includes at least one execution unit (EU) while a second voltage-regulated sub-domain includes at least one texture sampler to provide flexibility in setting the graphics core power-performance point beyond modulating active EU count through power domain (gating) control. In embodiments, a sub-domain voltage is regulated by an on-chip DLDO for fast voltage switching. Clock frequency and sub-domain voltage may be switched faster than the voltage of the voltage domain supply rail, permitting a more finely grained power management that can be responsive to EU workload demand.
Public/Granted literature
- US20150177823A1 GRAPHICS PROCESSOR SUB-DOMAIN VOLTAGE REGULATION Public/Granted day:2015-06-25
Information query