Memory Power Management for Java Processors Using Heap Partitioning and Power Gating
Author
Summary, in English
Power consumption is an important design parameter for battery operated devices, and an especially sensitive issue in embedded Java systems. This paper presents a solution to reduce leakage power consumption of the heap memory characteristic of Java processors. By partitioning the heap into several memory banks and taking advantage of a compacting garbage collector, our method dynamically powers off inactive regions.
The technique has been designed and evaluated for JOP, a Java Optimized Processor, and further implemented and verified in a 65nm CMOS technology using STM low-power high Vt (LPHVT) standard cell libraries. Experiments show that our method accurately follows the memory utilization profile in powering on and off banks, achieving at least 50% leakage power reduction. The performance, area and power penalty introduced by the additional hardware are negligible.
The technique has been designed and evaluated for JOP, a Java Optimized Processor, and further implemented and verified in a 65nm CMOS technology using STM low-power high Vt (LPHVT) standard cell libraries. Experiments show that our method accurately follows the memory utilization profile in powering on and off banks, achieving at least 50% leakage power reduction. The performance, area and power penalty introduced by the additional hardware are negligible.
Department/s
Publishing year
2016
Language
English
Publication/Series
The 14th International Workshop on Java Technologies for Real-Time and Embedded Systems
Document type
Conference paper
Topic
- Embedded Systems
Conference name
14th International Workshop on Java Technologies for Real-Time and Embedded Systems - JTRES 2016
Conference date
2016-08-29 - 2016-09-02
Conference place
Lugano, Switzerland
Status
Published