摘要:
An integrated circuit includes a plurality of processor cores and a readable non-volatile memory that stores information expressive of at least one operating characteristic for each of the plurality of processor cores. Also disclosed is a method to operate a data processing system, where the method includes providing a multicore processor that contains a plurality of processor cores and a readable non-volatile memory that stores information, determined during a testing operation, that is indicative of at least a maximum operating frequency for each of the plurality of processor cores. The method further includes operating a scheduler coupled to an operating system and to the multicore processor, where the scheduler is operated to be responsive at least in part to information read from the memory to schedule the execution of threads to individual ones of the processor cores for a more optimal usage of energy.
摘要:
A low leakage monotonic CMOS logic circuit and a method, a method of design and a system for designing such circuits. The circuit, including: one or more logic stages, at least one of the logic stages having a predominantly high input state or having a predominantly low input state; wherein the logic stages having the predominantly high input state, comprise one or more thin gate dielectric and high threshold voltage PFETs with respect to a reference PFET and one or more thick gate dielectric and low threshold voltage NFETs with respect to a reference NFET; and wherein the logic stages having the predominantly low input state, comprise one or more thick gate dielectric and low threshold voltage PFETs with respect to the reference PFET and one or more thin gate dielectric and high threshold voltage NFETs with respect to the reference NFET.
摘要:
A method and system for simulating an integrated circuit. The method includes the steps of performing a timing analysis of the circuits to ensure that they meet specified timing criteria, performing soft error analysis of the circuits to determine whether they meet specified soft error criteria, and improving those circuits that fail the soft error analysis to improve their resistance to soft errors and having no degradation on timing. Preferably, the improving step includes the step of improving those circuits that fail the soft error analysis by either having an additional voltage source or altering the capacitance of the circuits.
摘要:
A DTCMOS circuit produces an output based on a logical combination of input logic signals. The circuit includes input transistors which receive on a respective gate a respective logic signal. The transistors have a body contact which is connected to the gate of another transistor. Transistors which are receiving later arriving logic signals therefore have a threshold voltage lowered by an earlier arriving logic signal. By coupling the earlier arriving logic signal with a body contact of another input transistor, the threshold voltage may be lowered prior to processing of the subsequently arriving logic signal. The DTCMOS circuit may be implemented in SOI with the attendant benefits of a lower supply made possible by the lowered voltage threshold each of the transistors without sacrificing leakage current inherent in DTCMOS circuits.
摘要:
The invention includes an error correcting logic system that allows critical circuits to be hardened with only one redundant unit and without loss of circuit performance. The system provides an interconnecting gate that suppresses a fault in one of at least two redundant dynamic logic gates that feed to the interconnecting gate. The system is applicable to dynamic or static logic systems. The system prevents propagation of a fault, and addresses not only soft errors, but noise-induced errors. Also, there is provided a design structure embodied in a machine readable medium used in a design process, and which includes such error correcting logic system.
摘要:
The invention includes an error correcting logic system that allows critical circuits to be hardened with only one redundant unit and without loss of circuit performance. The system provides an interconnecting gate that suppresses a fault in one of at least two redundant dynamic logic gates that feed to the interconnecting gate. The system is applicable to dynamic or static logic systems. The system prevents propagation of a fault, and addresses not only soft errors, but noise-induced errors.
摘要:
A low leakage monotonic CMOS logic circuit and a method, a method of design and a system for designing such circuits. The circuit, including: one or more logic stages, at least one of the logic stages having a predominantly high input state or having a predominantly low input state; wherein the logic stages having the predominantly high input state, comprise one or more thin gate dielectric and high threshold voltage PFETs with respect to a reference PFET and one or more thick gate dielectric and low threshold voltage NFETs with respect to a reference NFET; and wherein the logic stages having the predominantly low input state, comprise one or more thick gate dielectric and low threshold voltage PFETs with respect to the reference PFET and one or more thin gate dielectric and high threshold voltage NFETs with respect to the reference NFET.
摘要:
An integrated circuit that includes a dynamic logic gate having an output node at which a logical output value of the logic gate is detected and also includes a circuit for selectable alteration of the soft error susceptibility of the dynamic logic gate.
摘要:
A computer system for designing a low leakage monotonic CMOS logic circuit. The system performing the computer implements steps of: (a) specifying a reference PFET having its threshold voltage and its gate dielectric thickness and a reference NFET having its threshold voltage and its gate dielectric thickness; (b) synthesizing a schematic circuit design with standard design elements, the standard design elements including one or more reference PFETS and one or more reference NFETs; (c) analyzing one or more circuits for logic stages having predominantly high input logic states or predominantly low input logic states; (d) selecting one or more logic stages determined to have predominantly high input logic states or predominantly low input logic states; and (e) replacing the standard design elements of the selected logic stages with reduced current leakage elements.
摘要:
The invention includes an error correcting logic system that allows critical circuits to be hardened with only one redundant unit and without loss of circuit performance. The system provides an interconnecting gate that suppresses a fault in one of at least two redundant dynamic logic gates that feed to the interconnecting gate. The system is applicable to dynamic or static logic systems. The system prevents propagation of a fault, and addresses not only soft errors, but noise-induced errors.