CSE591 Low Power Architecture - Revision history

Baker at 22:54, 2 March 2007

2007-03-02T22:54:56Z

← Older revision		Revision as of 16:54, 2 March 2007
Line 18:		Line 18:

	=== [[Simulation Software]] ===		=== [[Simulation Software]] ===

	~~=== DVFS Project Resources ===~~
	*[http://www.eecg.toronto.edu/~tamda/csc2228/ Dynamic Voltage Scaling in Mobile Devices]
	~~::Concise references for DVFS project from 2003 using speedstep on an IBM Thinkpad~~
	~~::Good linux kernel reference~~

	== [[/Project II\|Project II]] ==		== [[/Project II\|Project II]] ==
	*XScale project using <del>PXA250</del> 80200 already in Dr. Shrivastava's possession.		*XScale project using <del>PXA250</del> 80200 already in Dr. Shrivastava's possession.


	== 19 Feb 07 Presentation II ==		== 19 Feb 07 Presentation II ==
Line 42:		Line 36:
	[http://en.wikipedia.org/wiki/Wall_clock_time Wall clock time]		[http://en.wikipedia.org/wiki/Wall_clock_time Wall clock time]

	== 5 March 07 Project I ~~Take II~~ ==		== 5 March 07 Project I.2 ==

	'''Considerations:'''		'''Considerations:'''

Baker at 22:46, 2 March 2007

2007-03-02T22:46:20Z

← Older revision		Revision as of 16:46, 2 March 2007
Line 45:		Line 45:

	'''Considerations:'''		'''Considerations:'''
	*Existing power reduction schemes for LCDs and ~~thier~~ applicability to Electrophoretic Displays (EPDs)		*Existing power reduction schemes for LCDs and their applicability to Electrophoretic Displays (EPDs)
	::Dynamic Backlight and Contrast Scaling		::-Dynamic Backlight and Contrast Scaling
	*The advantages of bi-stability of EPD over constant refresh of LCD		*The advantages of bi-stability of EPD over constant refresh of LCD
	::Possibility of redraw circuitry for bi-stable display which only addressed pixels which need to be updated		::-Possibility of redraw circuitry for bi-stable display which only addressed pixels which need to be updated
	*Relevance of the backlight in LCD in comparison with "front-light" in EPD		*Relevance of the backlight in LCD in comparison with "front-light" in EPD
	::Best-case/Worst-case for each display and in what circumstances are they opposed, in what circumstances are they matched		::-Best-case/Worst-case for each display and in what circumstances are they opposed, in what circumstances are they matched
	*Power characterization of power consumption of the LCD vs. the EPD		*Power characterization of power consumption of the LCD vs. the EPD
	*Power Modeling for LCD and EPD		*Power Modeling for LCD and EPD
	::Traditionally pixel switching has been ignored because it is insignificant compared to backlight and control circuitry, is the EPD a different case		::-Traditionally pixel switching has been ignored because it is insignificant compared to backlight and control circuitry, is the EPD a different case
	::LCD switching power ~~modelled~~ as capacitors ([[Display Technology#Display Power\|1.16, 1.5, 1.10]])		::-LCD switching power modeled as capacitors ([[Display Technology#Display Power\|1.16, 1.5, 1.10]])
	::EPD switching power ~~modelled~~ as resistor ([[Display Technology#Electrophroetic Displays\|1.12]])		::-EPD switching power modeled as resistor ([[Display Technology#Electrophroetic Displays\|1.12]])

Baker at 22:42, 2 March 2007

2007-03-02T22:42:59Z

← Older revision		Revision as of 16:42, 2 March 2007
Line 1:		Line 1:
	==29 Jan 07 Presentation I==		== 29 Jan 07 Presentation I ==
	[http://www.esoterum.org/mw/images/0/04/Instruction-level-power-dissipation.pdf Instruction Level Power Dissipation in the Intel XScale Embedded Microprocessor]		[http://www.esoterum.org/mw/images/0/04/Instruction-level-power-dissipation.pdf Instruction Level Power Dissipation in the Intel XScale Embedded Microprocessor]

Line 10:		Line 10:
	:*[http://tab.computer.org/tcca/NEWS/jan2001/irwin.pdf SimplePower "A cycle accurate energy simulator"]		:*[http://tab.computer.org/tcca/NEWS/jan2001/irwin.pdf SimplePower "A cycle accurate energy simulator"]

	==5 Feb 07 Project I Topic due==		== 5 Feb 07 Project I Topic due ==

	==12 Feb 07 Project I due==		== 12 Feb 07 Project I due ==

	*[http://www.intel.com/design/PentiumD/documentation.htm Pentium D specifications (65nm, up to 5GHz)]		*[http://www.intel.com/design/PentiumD/documentation.htm Pentium D specifications (65nm, up to 5GHz)]
	:-[http://www.intel.com/design/packtech/ch_04.pdf Thermal/Failure Rate relationships, Fig. 4-27]		:-[http://www.intel.com/design/packtech/ch_04.pdf Thermal/Failure Rate relationships, Fig. 4-27]

	===[[Simulation Software]]===		=== [[Simulation Software]] ===

	===DVFS Project Resources===		=== DVFS Project Resources ===
	*[http://www.eecg.toronto.edu/~tamda/csc2228/ Dynamic Voltage Scaling in Mobile Devices]		*[http://www.eecg.toronto.edu/~tamda/csc2228/ Dynamic Voltage Scaling in Mobile Devices]
	::Concise references for DVFS project from 2003 using speedstep on an IBM Thinkpad		::Concise references for DVFS project from 2003 using speedstep on an IBM Thinkpad
Line 28:		Line 28:


	==19 Feb 07 Presentation II==		== 19 Feb 07 Presentation II ==

	*[http://www.public.asu.edu/~ashriva6/teaching/LPCA/Readings/05B-01.pdf Mitigating Amdahl’s Law Through EPI Throttling]		*[http://www.public.asu.edu/~ashriva6/teaching/LPCA/Readings/05B-01.pdf Mitigating Amdahl’s Law Through EPI Throttling]
Line 42:		Line 42:
	[http://en.wikipedia.org/wiki/Wall_clock_time Wall clock time]		[http://en.wikipedia.org/wiki/Wall_clock_time Wall clock time]

	== Project I Take II ==		== 5 March 07 Project I Take II ==

	'''Considerations:'''		'''Considerations:'''

Baker at 22:41, 2 March 2007

2007-03-02T22:41:56Z

← Older revision		Revision as of 16:41, 2 March 2007
Line 45:		Line 45:

	'''Considerations:'''		'''Considerations:'''
	*Power use of the LCD vs. the Electrophoretic Display (EPD)		*Existing power reduction schemes for LCDs and thier applicability to Electrophoretic Displays (EPDs)
	*Existing power reduction schemes for LCDs and thier applicability to EPDs
	::Dynamic Backlight and Contrast Scaling		::Dynamic Backlight and Contrast Scaling
	*The advantages of bi-stability of EPD over constant refresh of LCD		*The advantages of bi-stability of EPD over constant refresh of LCD
Line 52:		Line 51:
	*Relevance of the backlight in LCD in comparison with "front-light" in EPD		*Relevance of the backlight in LCD in comparison with "front-light" in EPD
	::Best-case/Worst-case for each display and in what circumstances are they opposed, in what circumstances are they matched		::Best-case/Worst-case for each display and in what circumstances are they opposed, in what circumstances are they matched
			*Power characterization of power consumption of the LCD vs. the EPD
	*Power Modeling for LCD and EPD		*Power Modeling for LCD and EPD
	::Traditionally pixel switching has been ignored because it is insignificant compared to backlight and control circuitry, is the EPD a different case		::Traditionally pixel switching has been ignored because it is insignificant compared to backlight and control circuitry, is the EPD a different case
	::LCD switching power modelled as capacitors ([[Display Technology#Display Power\|1.16, 1.5, 1.10]])		::LCD switching power modelled as capacitors ([[Display Technology#Display Power\|1.16, 1.5, 1.10]])
	::EPD switching power modelled as resistor ([[Display Technology#Electrophroetic Displays\|1.12]])		::EPD switching power modelled as resistor ([[Display Technology#Electrophroetic Displays\|1.12]])

Baker at 22:40, 2 March 2007

2007-03-02T22:40:10Z

← Older revision		Revision as of 16:40, 2 March 2007
Line 55:		Line 55:
	::Traditionally pixel switching has been ignored because it is insignificant compared to backlight and control circuitry, is the EPD a different case		::Traditionally pixel switching has been ignored because it is insignificant compared to backlight and control circuitry, is the EPD a different case
	::LCD switching power modelled as capacitors ([[Display Technology#Display Power\|1.16, 1.5, 1.10]])		::LCD switching power modelled as capacitors ([[Display Technology#Display Power\|1.16, 1.5, 1.10]])
	::EPD switching power modelled as resistor (Display Technology#Electrophroetic Displays\|1.12]]		::EPD switching power modelled as resistor ([[Display Technology#Electrophroetic Displays\|1.12]])

Baker at 22:39, 2 March 2007

2007-03-02T22:39:46Z

← Older revision		Revision as of 16:39, 2 March 2007
Line 54:		Line 54:
	*Power Modeling for LCD and EPD		*Power Modeling for LCD and EPD
	::Traditionally pixel switching has been ignored because it is insignificant compared to backlight and control circuitry, is the EPD a different case		::Traditionally pixel switching has been ignored because it is insignificant compared to backlight and control circuitry, is the EPD a different case
	::LCD switching power modelled as capacitors ([[Display Technology#Display Power\|1.16, 1.5]])		::LCD switching power modelled as capacitors ([[Display Technology#Display Power\|1.16, 1.5, 1.10]])
	::EPD switching power modelled as resistor (		::EPD switching power modelled as resistor (Display Technology#Electrophroetic Displays\|1.12]]

Baker at 22:37, 2 March 2007

2007-03-02T22:37:25Z

← Older revision		Revision as of 16:37, 2 March 2007
Line 44:		Line 44:
	== Project I Take II ==		== Project I Take II ==

	Considerations:		'''Considerations:'''

	*Power use of the LCD vs. the Electrophoretic Display (EPD)		*Power use of the LCD vs. the Electrophoretic Display (EPD)
	*Existing power reduction schemes for LCDs and thier applicability to EPDs		*Existing power reduction schemes for LCDs and thier applicability to EPDs
Line 51:		Line 50:
	*The advantages of bi-stability of EPD over constant refresh of LCD		*The advantages of bi-stability of EPD over constant refresh of LCD
	::Possibility of redraw circuitry for bi-stable display which only addressed pixels which need to be updated		::Possibility of redraw circuitry for bi-stable display which only addressed pixels which need to be updated
	*~~Relavance~~ of the backlight in LCD in comparison with "front-light" in EPD		*Relevance of the backlight in LCD in comparison with "front-light" in EPD
			::Best-case/Worst-case for each display and in what circumstances are they opposed, in what circumstances are they matched
			*Power Modeling for LCD and EPD
			::Traditionally pixel switching has been ignored because it is insignificant compared to backlight and control circuitry, is the EPD a different case
			::LCD switching power modelled as capacitors ([[Display Technology#Display Power\|1.16, 1.5]])
			::EPD switching power modelled as resistor (

Baker at 22:32, 2 March 2007

2007-03-02T22:32:23Z

← Older revision		Revision as of 16:32, 2 March 2007
Line 44:		Line 44:
	== Project I Take II ==		== Project I Take II ==

	~~[http~~://ieeexplore.ieee.org.ezproxy1.lib.asu.edu/iel5/16/34442/01643488.pdf?tp=&arnumber=1643488&isnumber=34442 T. N. Ruckmongathan, M. Govind, and G. Deepak, Reducing Power Consumption in Liquid-Crystal Displays, 2006]		Considerations:

	~~[http~~:~~//ieeexplore.ieee.org.ezproxy1.lib.asu.edu/iel5/16/31855/01482355.pdf?tp=&arnumber=1482355&isnumber=31855 B.W.Marks, Power Consumption~~ of ~~Multiplexed Liquid~~-~~Crystal Displays, 1982]~~		*Power use of the LCD vs. the Electrophoretic Display (EPD)
			*Existing power reduction schemes for LCDs and thier applicability to EPDs
			::Dynamic Backlight and Contrast Scaling
			*The advantages of bi-stability of EPD over constant refresh of LCD
			::Possibility of redraw circuitry for bi-stable display which only addressed pixels which need to be updated
			*Relavance of the backlight in LCD in comparison with "front-light" in EPD

Baker at 01:01, 24 February 2007

2007-02-24T01:01:47Z

← Older revision		Revision as of 19:01, 23 February 2007
Line 46:		Line 46:
	[http://ieeexplore.ieee.org.ezproxy1.lib.asu.edu/iel5/16/34442/01643488.pdf?tp=&arnumber=1643488&isnumber=34442 T. N. Ruckmongathan, M. Govind, and G. Deepak, Reducing Power Consumption in Liquid-Crystal Displays, 2006]		[http://ieeexplore.ieee.org.ezproxy1.lib.asu.edu/iel5/16/34442/01643488.pdf?tp=&arnumber=1643488&isnumber=34442 T. N. Ruckmongathan, M. Govind, and G. Deepak, Reducing Power Consumption in Liquid-Crystal Displays, 2006]

	[http://ieeexplore.ieee.org.ezproxy1.lib.asu.edu/iel5/16/31855/01482355.pdf?tp=&arnumber=1482355&isnumber=31855 B.W.Marks, Power Consumption of Multiplexed Liquid-Crystal Displays]		[http://ieeexplore.ieee.org.ezproxy1.lib.asu.edu/iel5/16/31855/01482355.pdf?tp=&arnumber=1482355&isnumber=31855 B.W.Marks, Power Consumption of Multiplexed Liquid-Crystal Displays, 1982]

Baker at 01:34, 23 February 2007

2007-02-23T01:34:53Z

← Older revision		Revision as of 19:34, 22 February 2007
Line 46:		Line 46:
	[http://ieeexplore.ieee.org.ezproxy1.lib.asu.edu/iel5/16/34442/01643488.pdf?tp=&arnumber=1643488&isnumber=34442 T. N. Ruckmongathan, M. Govind, and G. Deepak, Reducing Power Consumption in Liquid-Crystal Displays, 2006]		[http://ieeexplore.ieee.org.ezproxy1.lib.asu.edu/iel5/16/34442/01643488.pdf?tp=&arnumber=1643488&isnumber=34442 T. N. Ruckmongathan, M. Govind, and G. Deepak, Reducing Power Consumption in Liquid-Crystal Displays, 2006]

	[http://ieeexplore.ieee.org.ezproxy1.lib.asu.edu/iel5/16/31855/01482355.pdf?tp=&arnumber=1482355&isnumber=31855 B.W.Marks, Power Consumption of Multiplexed Liquid-Crystal Displays		[http://ieeexplore.ieee.org.ezproxy1.lib.asu.edu/iel5/16/31855/01482355.pdf?tp=&arnumber=1482355&isnumber=31855 B.W.Marks, Power Consumption of Multiplexed Liquid-Crystal Displays]