Method and system for estimating power consumption of integrated circuit design
View Patent ↗A method and system for estimating power consumption for at least one Intellectual Property (IP) block in an integrated circuit (IC) design includes identifying at least one port in the at least one IP block. The at least one port is associated with at least one operation. A sequence of micro-operations of the at least one operation is identified. The sequence of micro-operations constitutes an operation pipeline. A set of micro-operations per cycle in the operation pipeline and energy per cycle of each cycle of the operation pipeline, based on the set of micro-operations per cycle by using one or more of, an idle energy value, a micro-operation isolated energy (MIE) value, an overlap energy (OE) value, and a micro-operation overlap energy (MOE) value, are determined. Then the power consumption of the at least one IP block is determined using the energy per cycle of each cycle of the operation pipeline.
1. A method for estimating power consumption for at least one Intellectual Property (IP) block in an integrated circuit(IC) design, the method comprising:
identifying at least one port in the at least one IP block, wherein the at least one port is associated with at least one operation;
identifying a sequence of micro-operations of the at least one operation, wherein the sequence of micro-operations constitute an operation pipeline;
identifying a set of micro-operations per cycle of the operation pipeline;
determining an energy per cycle for each cycle of the operation pipeline based on the set of micro-operations per cycle using one or more of an idle energy value, a micro-operation isolated energy (MIE) value, an overlap energy (OE) value, and a micro-operation overlap energy (MOE) value; and
determining power consumption of the at least one IP block using the energy per cycle for each cycle of the operation pipeline.
2. The power consumption estimation method of claim 1 , wherein the idle energy value is determined based on energy consumption in the at least one IP block when the at least one operation is not being executed.
3. The power consumption estimation method of claim 1 , further comprising determining the energy per cycle for each cycle of the operation pipeline using the MIE value and the idle energy value when one micro-operation from the set of micro-operations is being executed per cycle.
4. The power consumption estimation method of claim 1 , wherein the MIE value is determined using a first predefined table.
5. The power consumption estimation method of claim 4 , wherein the MIE value of a micro-operation is based on a measured energy consumption value of the micro-operation and the idle energy value, and wherein the MIE value is stored in the first predefined table.
6. The power consumption estimation method of claim 4 , wherein the MOE value is determined using a second predefined table.
7. The power consumption estimation method of claim 6 , wherein the MOE value is based on a measured energy consumption value, the idle energy value and the MIE value when at least two micro-operations from the set of micro-operations are being executed per cycle, and wherein the MOE value is stored in the second predefined table.
8. The power consumption estimation method of claim 6 , wherein the OE value is determined using a third predefined table.
9. The power consumption estimation method of claim 8 , wherein the OE value is based on a measured energy consumption value, the idle energy value and the MIE value when at least two micro-operations from the set of micro-operations are being executed per cycle, and wherein the OE value is stored in the third predefined table.
10. The power consumption estimation method of claim 8 , further comprising reducing the sizes of the first, second and third tables based on port independence and operation independence of one or more of micro-operation isolated energy and overlap energy of the set of micro-operations per cycle.
11. The power consumption estimation method of claim 10 , further comprising determining the energy per cycle for each cycle of the operation pipeline using the MIE value, the MOE value and the idle energy value when at least one or more micro-operations from the set of micro-operations are being executed per cycle and when MOE reduction to determine the energy per cycle for each cycle of the operation pipeline is applicable to the set of micro-operations per cycle.
12. The power consumption estimation method of claim 10 , further comprising determining the energy per cycle for each cycle of the operation pipeline using the MIE value, the OE value and the idle energy value when at least two micro-operations from the set of micro-operations are being executed per cycle and when MOE reduction to determine the energy per cycle for each cycle of the operation pipeline is not applicable to the set of micro-operations per cycle.
13. The power consumption estimation method of claim 1 , further comprising the step of determining total energy consumption in the at least one IP block using energy consumption of one or more operation pipelines.
14. The power consumption estimation method of claim 13 , further comprising the step of determining average power consumption in the at least one IP block using the total energy consumption in the at least one IP block.
15. A system for estimating power consumption for at least one Intellectual Property (IP) block in an integrated circuit(IC) design, the system comprising:
a port identification module that identifies at least one port in the at least one IP block, wherein the at least one port is associated with at least one operation;
a micro-operation sequence identifier module in communication with the port identification module that identifies a sequence of micro-operations of the at least one operation, wherein the sequence of micro-operations constitutes an operation pipeline;
a micro-operation cycle identifier module in communication with the micro-operation sequence identifier module that identifies a set of micro-operations per cycle in the operation pipeline;
an energy-calculator module in communication with the micro-operation cycle identifier module that determines an energy per cycle for each cycle of the operation pipeline based on the set of micro-operations per cycle using one or more of an idle energy value, a micro-operation isolated energy (MIE) value, an overlap energy value (OE), and a micro-operation overlap energy (MOE) value; and
an operation power calculator module in communication with the energy-calculator module that determines power consumption of the operation pipeline using the energy per cycle for each cycle of the operation pipeline.
16. The power consumption estimation system of claim 15 , wherein the MIE value is stored in a first predefined table, the MOE value is stored in a second predefined table, and the OE value is stored in a third predefined table.
17. The power consumption estimation system of claim 16 , wherein the energy-calculator module further comprises a characterizing module, wherein the characterizing module comprises:
an MIE value calculator module that calculates the MIE value and stores the MIE value in the first predefined table, wherein the MIE value is based on a measured energy consumption value and the idle energy value when one micro-operation from the set of micro-operations is being executed per cycle;
an MOE value calculator module in communication with the MIE value calculator module that calculates the MOE value and stores the MOE value in the second predefined table, wherein the MOE value is based on a measured energy consumption value, the idle energy value and the MIE value when at least two micro-operations from the set of micro-operations are being executed per cycle; and
an OE value calculator module in communication with the MIE value calculator module that calculates the OE value and stores the OE value in the third predefined table, wherein the OE value is based on a measured energy consumption value, the idle energy value and the MIE value when at least two micro-operations from the set of micro-operations are being executed per cycle.
18. The power consumption estimation system of claim 15 , further comprising a reduction module that reduces the MIE, MOE, and OE table sizes based on port independence and operation independence of one or more of micro-operation isolated energy and overlap energy of the set of micro-operations per cycle.
19. The power consumption estimation system of claim 15 , further comprising:
a total energy-calculator module that determines total energy consumption in the at least one IP block using energy consumption of one or more operation pipelines; and
an average power calculator module that determines average power consumption in the at least one IP block using the total energy consumption in the at least one IP block.
20. A computer program product, stored in a tangible computer readable medium, for estimating power consumption for at least one Intellectual Property (IP) block in an integrated circuit(IC) design, the computer program product comprising:
a first set of instructions for identifying at least one port in the at least one IP block, wherein the at least one port is associated with at least one operation;
a second set of instructions for identifying a sequence of micro-operations for the at least one operation, wherein the sequence of micro-operations constitute the operation pipeline;
a third set of instructions for identifying a set of micro-operations per cycle in the operation pipeline;
a fourth set of instructions for determining an energy per cycle for each cycle of the operation pipeline based on the set of micro-operations per cycle using one or more of an idle energy value, a micro-operation isolated energy(MIE) value, an overlap energy value(OE), and a micro-operation overlap energy (MOE) value; and
a fifth set of instructions for determining power consumption of the at least one IP block using the energy per cycle for each cycle of the operation pipeline.