Abstract: A method, system and computer readable program product are disclosed for compiling a spreadsheet to execute stream processing in a computing system. In an embodiment, the method comprises extracting a function from the spreadsheet, said function supporting data windows and stream partitioning in the computing system; and identifying input cells of the spreadsheet for holding input values for the function, and identifying output cells of the spreadsheet for holding output values of the function. In embodiments of the invention, a data stream is partitioned into a plurality of data stream partitions, and the extracted function is applied to the stream partitions in parallel. In embodiments of the invention, the extracted function is applied to the data stream partitions in series. The windows may be time based windows, and may be count based windows, and the windows may have variable sizes.

Abstract: A method, system and computer readable program product are disclosed for encoding a function in a spreadsheet program to execute stream processing on a computing system. In embodiments of the invention, the method comprises encoding one or more formulas in one or more cells of the spreadsheet program, each of the formulas supporting data windows and stream partitioning; designating a first group of cells of the spreadsheet program as input cells for holding input values for the one or more formulas; and designating a second group of cells of the spreadsheet program as output cells for holding output values of the one or more formulas. In embodiments of the invention, the stream partitioning includes partitioning a defined stream of data into a plurality of data stream partitions, and the one or more formulas are encoded to operate on the plurality of data stream partitions.

Abstract: A method, system and computer readable program product are disclosed for encoding a function in a spreadsheet program to execute stream processing on a computing system. In embodiments of the invention, the method comprises encoding one or more formulas in one or more cells of the spreadsheet program, each of the formulas supporting data windows and stream partitioning; designating a first group of cells of the spreadsheet program as input cells for holding input values for the one or more formulas; and designating a second group of cells of the spreadsheet program as output cells for holding output values of the one or more formulas. In embodiments of the invention, the stream partitioning includes partitioning a defined stream of data into a plurality of data stream partitions, and the one or more formulas are encoded to operate on the plurality of data stream partitions.

Abstract: A method, system and computer readable program product are disclosed for compiling a spreadsheet to execute stream processing in a computing system. In an embodiment, the method comprises extracting a function from the spreadsheet, said function supporting data windows and stream partitioning in the computing system; and identifying input cells of the spreadsheet for holding input values for the function, and identifying output cells of the spreadsheet for holding output values of the function. In embodiments of the invention, a data stream is partitioned into a plurality of data stream partitions, and the extracted function is applied to the stream partitions in parallel. In embodiments of the invention, the extracted function is applied to the data stream partitions in series. The windows may be time based windows, and may be count based windows, and the windows may have variable sizes.

Abstract: Concurrent reduction optimizations for thieving schedulers may include a thieving worker thread operable take a task from a first worker thread's task dequeue, the thieving worker thread and the first worker thread having same synchronization point in a program at which the thieving worker thread and the first worker thread can resume their operations. The thieving worker thread may be further operable to create a local copy of memory locations associated with the task in local memory of the thieving worker thread, and store result of the thieving worker executing the task as the local copy. The thieving worker thread may be further operable to atomically perform a reduction operation to a master location that both the thieving worker thread and the first worker thread can access, in response to the thieving worker thread completing the task.

Abstract: A contactless integrated circuit receiving an RF signal comprises a clock-signal generator to produce a clock signal from a first half wave and a second half wave representing the received RF signal. Also disclosed is a method for the generation of a clock signal in which the first half wave and the second half wave are compared to produce the clock signal. The invention is adapated for use in contactless cards, transponders, and the like.

Abstract: A buffer of reduced size includes a logic gate to raise the potential level of input digital data having a first logic level to a potential equal to a low power supply potential, and to produce intermediate data if a validation signal is active. The buffer also includes a tristate inverter to produce output data, at an output, that are logically inverse to the intermediate data if the validation signal is active and having its output at high impedance if otherwise. Such a buffer is particularly useful as an output buffer for contact cards using a power supply potential different from a potential powering a reader with which the card communicates.

Abstract: A buffer of reduced size includes a logic gate to raise the potential level of input digital data having a first logic level to a potential equal to a low power supply potential, and to produce intermediate data if a validation signal is active. The buffer also includes a tristate inverter to produce output data, at an output, that are logically inverse to the intermediate data if the validation signal is active and having its output at high impedance if otherwise. Such a buffer is particularly useful as an output buffer for contact cards using a power supply potential different from a potential powering a reader with which the card communicates.