International Business Machines Corporation

Microsoft Technology Licensing, LLC

Indira Nair

Minsik Cho

Haoxing Ren

Brian R Konigsburg

Jeonghee Shin

Valentina Salapura

Christos J Georgiou

Victor L Gregurick

Alper Buyuktosunoglu

Gero Dittmann

Reinaldo A Bergamaschi

A low level virtual machine (LLVM)-based system C compiler for architecture synthesis is provided. In one aspect, a method for translating a system C model to hardware description language (HDL) is provided. The method includes the steps of: generating a hardware connection model (HCM) from the system C model, wherein the HCM defines modules and interconnects in a hardware system; parsing the system C model into a LLVM intermediate representation (IR); converting the LLVM IR to a system LLVM IR which records correspondence information between the LLVM IR and the HCM; and generating the HDL based on direct mapping of processes from the system LLVM IR and the HCM.

LLVM-based system C compiler for architecture synthesis

A method for condition analysis comprises receiving an algorithmic description of a hardware design, wherein the algorithmic description is specified using a programming language, generating an intermediate representation based on the algorithmic description, wherein the intermediate representation includes a plurality of nodes and a plurality of paths, wherein each path connects at least one node to at least one other node, computing a plurality of relationships between the plurality of nodes, wherein the plurality of relationships are based on the plurality of paths connecting the plurality of nodes and each relationship includes at least one of a dominance relationship and a post-dominance relationship between two or more nodes, partitioning the intermediate representation based on the computed relationships, performing an optimization using the partitioned intermediate representation, and converting results of the optimization to the hardware design.

Condition analysis

In a computing system running an environment for designing operation of circuitry, at least the following are performed for providing simulations and evaluations of one or more user-defined modules of circuitry including one or more pipeline stages in a pipeline. A model of the pipeline is automatically generated by using a pipeline block diagram, where the model is generated in a high-level modeling language able to perform simulations of circuitry with the pipeline. An interface is automatically generated between the one or more user-defined modules and the generated model of the pipeline, the interface including access to the pipeline, wherein the pipeline access allows the one or more user-defined modules to interact indirectly. Evaluation is performed of the one or more user-defined modules using the automatically generated model of the pipeline and the automatically generated interface. Methods, apparatus, and computer program products are disclosed.

Automating a microarchitecture design exploration environment

In a computing system running an environment for designing operation of circuity, at least the following are performed for providing simulations and evaluations of one or more user-defined modules of circuitry including one or more pipeline stages in a pipeline. A model of the pipeline is automatically generated by using a pipeline block diagram, where the model is generated in a high-level modeling language able to perform simulations of circuitry with the pipeline. An interface is automatically generated between the one or more user-defined modules and the generated model of the pipeline, the interface including a set of access methods to the pipeline. Evaluation is performed of the one or more user-defined modules using the automatically generated model of the pipeline and the automatically generated interface. Methods, apparatus, and computer program products are disclosed.

In a computing system running an environment for designing operation of circuitry, at least the following are performed for providing simulations and evaluations of one or more user-defined modules of circuitry including one or more pipeline stages in a pipeline. A model of the pipeline is automatically generated by using a pipeline block diagram, where the model is generated in a high-level modeling language able to perform simulations of circuitry with the pipeline. An interface is automatically generated between the one or more user-defined modules and the generated model of the pipeline, the interface including a set of access methods to the pipeline. Evaluation is performed of the one or more user-defined modules using the automatically generated model of the pipeline and the automatically generated interface. Methods, apparatus, and computer program products are disclosed.

A single chip protocol converter integrated circuit (IC) capable of receiving packets generating according to a first protocol type and processing said packets to implement protocol conversion and generating converted packets of a second protocol type for output thereof, the process of protocol conversion being performed entirely within the single integrated circuit chip. The single chip protocol converter can be further implemented as a macro core in a system-on-chip (SoC) implementation, wherein the process of protocol conversion is contained within a SoC protocol conversion macro core without requiring the processing resources of a host system. The single chip protocol converter integrated circuit and SoC protocol conversion macro implementation include multiprocessing capability including processor devices that are configurable to adapt and modify the operating functionality of the chip.

Single chip protocol converter

A single chip protocol converter integrated circuit (IC) capable of receiving packets generating according to a first protocol type and processing said packets to implement protocol conversion and generating converted packets of a second protocol type for output thereof, the process of protocol conversion being performed entirely within the single integrated circuit chip. The single chip protocol converter can be further implemented as a macro core in a system-on-chip (SoC) implementation, wherein the process of protocol conversion is contained within a SoC protocol conversion macro core without requiring the processing resources of a host system. Packet conversion may additionally entail converting packets generated according to a first protocol version level and processing the said packets to implement protocol conversion for generating converted packets according to a second protocol version level, but within the same protocol family type. The single chip protocol converter integrated circuit and SoC protocol conversion macro implementation include multiprocessing capability including processor devices that are configurable to adapt and modify the operating functionality of the chip.

Power management techniques include a method for power management of a processor chip which comprises the following steps. An initial operating level is set for the processor chip. After a predetermined time interval, slack is calculated. If the slack is greater than zero, the initial operating level is increased to a next higher level, otherwise the initial operating level is maintained. After the predetermined time interval, the slack is re-calculated and further includes accumulated slack. If the re-calculated slack is greater than zero, the operating level is increased to the next higher level if the processor chip is being operated at the initial operating level, otherwise the operating level is returned to the initial operating level if the processor chip is being operated at the next higher operating level. The steps to re-calculate the slack and either increase the operating level to the next higher level or return the operating level to the initial operating level are repeated.

Self-tuning power management techniques

A network processor includes a system-onchip (SoC) macro core and functions as a single chip protocol converter that receives packets generating according to a first protocol type and processes the packets to implement protocol conversion and generates converted packets of a second protocol type for output thereof, the process of protocol conversion being performed entirely within the SoC macro core. The process of protocol conversion contained within the SoC macro core does not require the processing resources of a host system. The system-on chip macro core includes a bridge device for coupling a local bus in the protocol converting multiprocessor SoC macro core local bus to peripheral interfaces coupled to a system bus.

Network processor system on chip with bridge coupling protocol converting multiprocessor macro core local bus to peripheral interfaces coupled system bus

Growing community of inventors

Briarcliff Manor, NY, United States of America

Indira Nair