Instruction-level parallelism and Parallel computing

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Difference between Instruction-level parallelism and Parallel computing

Instruction-level parallelism vs. Parallel computing

Instruction-level parallelism (ILP) is a measure of how many of the instructions in a computer program can be executed simultaneously. Parallel computing is a type of computation in which many calculations or the execution of processes are carried out concurrently.

Central processing unit

A central processing unit (CPU) is the electronic circuitry within a computer that carries out the instructions of a computer program by performing the basic arithmetic, logical, control and input/output (I/O) operations specified by the instructions.

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Compiler

A compiler is computer software that transforms computer code written in one programming language (the source language) into another programming language (the target language).

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Data dependency

A data dependency in computer science is a situation in which a program statement (instruction) refers to the data of a preceding statement.

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Dataflow architecture

Dataflow architecture is a computer architecture that directly contrasts the traditional von Neumann architecture or control flow architecture.

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Execution unit

In computer engineering, an execution unit (also called a functional unit) is a part of the central processing unit (CPU) that performs the operations and calculations as instructed by the computer program.

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Instruction pipelining

Instruction pipelining is a technique for implementing instruction-level parallelism within a single processor.

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Instruction set architecture

An instruction set architecture (ISA) is an abstract model of a computer.

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Out-of-order execution

In computer engineering, out-of-order execution (or more formally dynamic execution) is a paradigm used in most high-performance central processing units to make use of instruction cycles that would otherwise be wasted.

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Register renaming

In computer architecture, register renaming is a technique that eliminates the false data dependencies arising from the reuse of architectural registers by successive instructions that do not have any real data dependencies between them.

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Software

Computer software, or simply software, is a generic term that refers to a collection of data or computer instructions that tell the computer how to work, in contrast to the physical hardware from which the system is built, that actually performs the work.

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Superscalar processor

A superscalar processor is a CPU that implements a form of parallelism called instruction-level parallelism within a single processor.

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