The Danger of Interval-Based Power Efficiency Metrics: When Worst Is Best Export

@article{citeulike:4413973, abstract = {This paper shows that if the execution of a program is divided into distinct intervals, it is possible for one processor or configuration to provide the best power efficiency over every interval, and yet have worse overall power efficiency over the entire execution than other configurations. This unintuitive behavior is a result of a seemingly intuitive use of power efficiency metrics, and can result in suboptimal design and execution decisions. This behavior may occur when using the energy-delay product and energy-delay product metrics but not with the energy metric.}, author = {Sazeides, Y. and Kumar, R. and Tullsen, D. M. and Constantinou, T.}, booktitle = {Computer Architecture Letters}, citeulike-article-id = {4413973}, citeulike-linkout-0 = {http://dx.doi.org/10.1109/L-CA.2005.2}, citeulike-linkout-1 = {http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1650131}, doi = {10.1109/L-CA.2005.2}, journal = {Computer Architecture Letters}, keywords = {efficiency, green, it, metrics, phd, power}, number = {1}, pages = {1}, posted-at = {2009-04-28 02:19:38}, priority = {2}, title = {The Danger of Interval-Based Power Efficiency Metrics: When Worst Is Best}, url = {http://dx.doi.org/10.1109/L-CA.2005.2}, volume = {4}, year = {2005} }

TY - JOUR ID - citeulike:4413973 L3 - citeulike-article-id:4413973 N2 - This paper shows that if the execution of a program is divided into distinct intervals, it is possible for one processor or configuration to provide the best power efficiency over every interval, and yet have worse overall power efficiency over the entire execution than other configurations. This unintuitive behavior is a result of a seemingly intuitive use of power efficiency metrics, and can result in suboptimal design and execution decisions. This behavior may occur when using the energy-delay product and energy-delay product metrics but not with the energy metric. IS - 1 JF - Computer Architecture Letters EP - 1 TI - The Danger of Interval-Based Power Efficiency Metrics: When Worst Is Best VL - 4 T2 - Computer Architecture Letters SP - 1 KW - efficiency KW - green KW - it KW - metrics KW - phd KW - power AU - Sazeides, Y AU - Kumar, R AU - Tullsen, DM AU - Constantinou, T PY - 2005/// UR - http://dx.doi.org/10.1109/L-CA.2005.2 ER -