2024-03-28T23:43:20Z
https://tsukuba.repo.nii.ac.jp/oai
oai:tsukuba.repo.nii.ac.jp:00032029
2022-04-27T09:00:19Z
152:2888
3:62:5298:2889
Imbalance of CPU temperatures in a blade system and its impact for power consumption of fans
児玉, 祐悦
Kodama, Yuetsu
Itoh, Satoshi
Shimizu, Toshiyuki
Sekiguchi, Satoshi
Nakamura, Hiroshi
Mori, Naohiko
We are now developing a new metric of data center power efficiency to fairly evaluate the contribution of each improvement for power efficiency. In order to develop it, we built a testbed of a data center and measured power consumption of each components and environmental variables in some detail, including the power consumption and temperature of each node, rack and air conditioning unit, as well as load on the CPU, Disk I/O and the network. In these measurements we found that there was a significant imbalance of CPU temperatures that caused an imbalance in the power consumption of fans. We clarified the relationship between CPU load and fan speed, and showed that scheduling or rearrangement of nodes could reduce the power consumption of fans. We reduced fan power consumption by a maximum of 62% and total power consumption by a maximum of 12% by changing the scheduling of five nodes, changing the nodes used from hot nodes to cool nodes.
journal article
Springer US
2013-03
application/pdf
Cluster Computing
1
16
27
37
1386-7857
https://tsukuba.repo.nii.ac.jp/record/32029/files/CC_16-1.pdf
eng
10.1007/s10586-011-0174-7
© Springer Science+Business Media, LLC 2011
The final publication is available at link.springer.com