Sun Microsystems, Inc.

Miriam G Blatt

David J Greenhill

Claude R Gauthier

Gary F Feierbach

Kathirgamar Aingaran

Poonacha P Kongetira

Vidyasagar Ganesan

A method for data analysis of power modeling for a microprocessor has been developed. The method takes multiple values of power data from a power modeling simulator and generates summary data to characterize the power data behavior. Summary data views include results characterizing behavior in a single cycle and behavior across multiple cycles. Data is viewed both at an absolute level to characterize total power and relative to previous levels to characterize power derivatives. Summary data is derived from power generated every cycle when running specific benchmark programs on the power simulator.

Data analysis techniques for dynamic power simulation of a CPU

A method for modeling the power behavior of a pipelined processor has been developed. The method uses a power model integrated into a cycle accurate simulator. To create the power model, design blocks of the processor are divided into sub-blocks. Power modeling equations for each sub-block are developed by collaboration between the sub-block circuit designer and the simulator developer, using activity information relevant to the sub-block that is available in the simulator model. Each equation is calculated multiple times with different sets of power parameters to represent varying power conditions. Every simulation cycle, sub-block power is summed to generate full-chip power for multiple power conditions.

Power modeling methodology for a pipelined processor

An apparatus for use with a computer having a display. The computer is programmed to provide an indicia on the display. The apparatus includes a control device adapted to be electrically connected to the computer and having an indicia control element for moving the indicia across the display. At least one foot pedal and at least one electrical connector for electrically connecting the at least one foot pedal to the control device are provided. The at least one foot pedal can be used to click on the indicia on the display. A method for operating the computer with the apparatus is provided.

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Menlo Park, CA, United States of America

Miriam G Blatt