Computer performanceIn computing, computer performance is the amount of useful work accomplished by a computer system. Outside specific contexts, computer performance is estimated in terms of accuracy, efficiency and speed of executing computer program instructions. When it comes to high computer performance, one or more of the following factors might be involved: Short response time for a given piece of work.High throughput (rate of processing work tasks).Low utilization of computing resources.
DhrystoneDhrystone is a synthetic computing benchmark program developed in 1984 by intended to be representative of system (integer) programming. The Dhrystone grew to become representative of general processor (CPU) performance. The name "Dhrystone" is a pun on a different benchmark algorithm called Whetstone, which emphasizes floating point performance.Complex instruction set computerA complex instruction set computer (CISC) is a computer architecture in which single instructions can execute several low-level operations (such as a load from memory, an arithmeticoperation, and a memory store) or are capable of multi-step operations or addressing modes within single instructions.
Benchmark (computing)Standardized performance evaluation A graphical demo running as a benchmark of the OGRE engine In computing, a benchmark is the act of running a computer program, a set of programs, or other operations, in order to assess the relative performance of an object, normally by running a number of standard tests and trials against it. The term benchmark is also commonly utilized for the purposes of elaborately designed benchmarking programs themselves.
IBMInternational Business Machines Corporation, doing business asIBM (nicknamed Big Blue), is an American multinationaltechnology company headquartered in Armonk, New York, and present in over 175 countries. It is a publicly traded company and one of the 30 companies in the Dow Jones Industrial Average.
ComputerProgrammable machine that processes dataComputers and computing devices from different eras—left to right, top to bottom: Early vacuum-tube computer (ENIAC)Mainframe computer (IBM System/360)Smartphone (LYF Water 2)Desktop computer (IBM ThinkCentre S50 with monitor)Supercomputer (IBM Summit)A computer is a machine that can be programmed to automatically carry out sequences of arithmetic or logical operations (computation).
Memory hierarchyIn computer architecture, the memory hierarchy separates computer storage into a hierarchy based on response time. Since response time, complexity, and capacity are related, the levels may also be distinguished by their performance and controlling technologies. Memory hierarchy affects performance in computer architectural design, algorithm predictions, and lower level programming constructs involving locality of reference.
Central processing unitCentral computer component that executes instructionsCore i9-14900KF, a 2023 CPU made by IntelInside a central processing unit: The integrated circuit of Intel's Xeon 3060, first manufactured in 2006A central processing unit (CPU), also known as a central processor, main processor, or simply processor, is the primary processor in a given computer.
Machine codeIn computing, machine code is dataencoded and structured to control a computer's central processing unit (CPU) via its programmable interface. A computer program consists primarily of sequences of machine-code instructions. Machine code is classified as native with respect to its host CPU since it is the language that the CPU interprets directly.
Resource contentionIn computer science, resource contention is a conflict over access to a shared resource such as random access memory, disk storage, cache memory, internal buses or external network devices. A resource experiencing ongoing contention can be described as oversubscribed. Resolving resource contention problems is one of the basic functions of operating systems. Various low-level mechanisms can be used to aid this, including locks, semaphores, mutexes and queues.Metric prefixA metric prefix is a unit prefix that precedes a basic unit of measure to indicate a multiple or submultiple of the unit. All metric prefixes used today are decimal. Each prefix has a unique symbol that is prepended to any unit symbol. The prefix kilo, for example, may be added to gram to indicate multiplication by one thousand: one kilogram is equal to one thousand grams.Function (computer programming)In computer programming, a function (also procedure, method, subroutine, routine, or subprogram) is a callable unit of software logic that has a well-formed interface and behavior and can be invoked multiple times. Callable units provide a powerful programming tool. The primary purpose is to enable the decomposition of a large and/or complicated problem into chunks that have relatively low cognitive load.*As an Amazon Associate I earn from qualifying purchases.