Title page for etd-0825108-165911


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URN etd-0825108-165911
Author Hua-Shan Hsu
Author's Email Address alexroms@yahoo.com.tw
Statistics This thesis had been viewed 5365 times. Download 1220 times.
Department Computer Science and Engineering
Year 2007
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Design and Implementation of Power Management Policy on 3D Graphics System-On-Chip
Date of Defense 2008-07-16
Page Count 63
Keyword
  • power management
  • low power
  • workload estimation
  • Abstract The 3D applications, until recently restricted to the desktops and workstations, are expanding into the mobile platforms, such as cellular phones and PDAs. Similar to the desktop, the consumers will expect high-quality 3D experience, and this is a big challenge. Handheld devices have slower processors that are less capable of computing large workloads, and the batteries have limited lifetimes, so for large and complex workload, we need an excellent power management policy for saving power. Besides, although mobile platforms have lower resolution than desktop, each pixel must still be rendered since the screen is closed to the observer’s eye, or we will see some imperfections.
    For the reasons above, we make a point of performance optimization and power saving, and these rely on accuracy and fast workload estimation. We refer to some workload estimation methods which researchers have mentioned before, such as UW1, UW5, PID[8], Frame Structure[9], Signature Table[1], and hybrid power management policy[10].UW1 and UW5 both use the previous workload as the estimation workload. PID uses the feedback loop to correct the estimation workload. Frame Structure classifies frames into several structures, and sums the workload of each structure up as the estimation workload. Signature Table stores some 3D parameters in the table, and when a new frame comes in, the 3D parameters of this frame will compare with the table, if match, we use the workload in the table as the estimation workload. Our method is a hybrid policy of UW1 and UW5, and we will decide to use UW1 or UW5 when a new frame comes in. Finally we will compare the performance of each power management policy.
    Advisory Committee
  • Pei-Yin Chen - chair
  • Jer-Min Jou - co-chair
  • Shiann-Rong Kuang - advisor
  • Files
  • etd-0825108-165911.pdf
  • indicate accessible in a year
    Date of Submission 2008-08-25

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