Early wakeup: improving the drowsy cache performance

Sunghoon SHIM; Sungwoo CHUNG; Hongjun CHOI; Cheol Hong KIM

Article Details

Early wakeup: improving the drowsy cache performance

Authors:

Sunghoon SHIM | Sungwoo CHUNG | Hongjun CHOI | Cheol Hong KIM

Publisher:

TUBITAK

Journal:

Turkish Journal of Electrical Engineering and Computer Science 2014 Vol.22 Issue 2, pp.425-433

Document Type:

Article

Publication Date:

5/2014

Document Language:

Turkish

Document ID (Org No.):

2000743065

Frequency:

Bimonthly

eISSN:

1303-6203

pISSN:

1300-0632

Abstract:

 

As process technology scales down, leakage power  consumption becomes comparable to dynamic power consumption. The drowsy  cache technique is known as one of the most popular techniques for reducing  the leakage power consumption in the data cache. However, the drowsy cache  is reported to degrade the processor performance significantly. In this  paper, to maintain the performance of the processor with the drowsy cache  technique, we propose an early wakeup technique, which predicts the next  cache line to be requested by utilizing the way-prediction information. The  proposed technique efficiently reduces the number of accesses to the cache  lines in drowsy mode. Our simulation results show that the proposed  technique reduces the extra delay due to the drowsy cache scheme by  29.6%, on average.

 

As process technology scales down, leakage power  consumption becomes comparable to dynamic power consumption. The drowsy  cache technique is known as one of the most popular techniques for reducing  the leakage power consumption in the data cache. However, the drowsy cache  is reported to degrade the processor performance significantly. In this  paper, to maintain the performance of the processor with the drowsy cache  technique, we propose an early wakeup technique, which predicts the next  cache line to be requested by utilizing the way-prediction information. The  proposed technique efficiently reduces the number of accesses to the cache  lines in drowsy mode. Our simulation results show that the proposed  technique reduces the extra delay due to the drowsy cache scheme by  29.6%, on average.

Article Details

Early wakeup: improving the drowsy cache performance

Authors: Sunghoon SHIM | Sungwoo CHUNG | Hongjun CHOI | Cheol Hong KIM

Publisher: TUBITAK

Journal: Turkish Journal of Electrical Engineering and Computer Science 2014 Vol.22 Issue 2, pp.425-433

Document Type: Article

Publication Date: 5/2014

Document Language: Turkish

Document ID (Org No.): 2000743065

Frequency: Bimonthly

eISSN: 1303-6203

pISSN: 1300-0632

Issues

Authors:

Sunghoon SHIM | Sungwoo CHUNG | Hongjun CHOI | Cheol Hong KIM

Publisher:

TUBITAK

Journal:

Turkish Journal of Electrical Engineering and Computer Science 2014 Vol.22 Issue 2, pp.425-433

Document Type:

Article

Publication Date:

5/2014

Document Language:

Turkish

Document ID (Org No.):

2000743065

Frequency:

Bimonthly

eISSN:

1303-6203

pISSN:

1300-0632