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Consumption of resources that is indirectly required to achieve a goal
In computing, overhead is the consumption of computing resources for aspects that are not directly related to achieving a desired goal. Overhead is required
Overhead_(computing)
Topics referred to by the same term
costs of running a business Overhead (engineering), ancillary implementation required to achieve a design goal Overhead (computing), ancillary implementation
Overhead
Extra design features
delivery circuit and a heat-dissipation mechanism. Overhead (business) Overhead (computing) "Overhead Costs | www.dau.edu". dau.edu. Retrieved 4 September
Overhead_(engineering)
Computer hardware technology that uses quantum mechanics
information in quantum computing, the qubit (quantum bit), serves a similar function as the bit in ordinary or "classical" computing. Unlike a classical
Quantum_computing
Cloud computing model
customer data. Serverless computing represents a form of virtualized computing", according to ISO/IEC 22123-2. Serverless computing is a broad ecosystem that
Serverless_computing
Form of shared internet-based computing
concert to perform very large tasks. Fog computing – Distributed computing paradigm that provides data, compute, storage and application services closer
Cloud_computing
Factory overhead, also called manufacturing overhead, manufacturing overhead costs (MOH cost), work overhead, or factory burden in American English, is
Factory_overhead
Content of a message excluding headers and metadata
In computing and telecommunications, the payload is the part of transmitted data that is the actual intended message. Headers and metadata are sent only
Payload_(computing)
Executing several computations during overlapping time periods
Concurrent computing is a form of computing in which several computations are executed concurrently—during overlapping time periods—instead of sequentially—with
Concurrent_computing
Software that executes source code directly
In computing, an interpreter is software that executes source code without first compiling it to machine code. An interpreted runtime environment differs
Interpreter_(computing)
Maximum rate of data transfer
"Modeling Message Passing Overhead". In Chung, Yeh-Ching; Moreira, José E. (eds.). Advances in Grid and Pervasive Computing: First International Conference
Bandwidth_(computing)
Programming paradigm in which many processes are executed simultaneously
parallel computing: bit-level, instruction-level, data, and task parallelism. Parallelism has long been employed in high-performance computing, but has
Parallel_computing
Data structure used in computer programs
portal Automatic memory allocation Calling convention Coroutine Overhead (computing) Spaghetti stack Stack-based memory allocation Stack machine Stack
Call_stack
Specialized computer hardware
and ease of updating features or patching bugs, at the cost of overhead to compute general operations. Advantages of focusing on hardware may include
Hardware_acceleration
Ratio to describe data-center efficiency
specifically, how much energy is used by the computing equipment (in contrast to cooling and other overhead that supports the equipment). PUE is the ratio
Power_usage_effectiveness
Classification of quantum processors
computing. Since this paper, FTQC has become a ubiquitous term for error-corrected regimes beyond NISQ. The proposed development of quantum computing
Fault tolerant quantum computing
Fault_tolerant_quantum_computing
Type of computing platform
Computing with memory (or in-memory computing, IMC) is a paradigm that performs computations directly within memory arrays (RAM, RRAM, PCM) rather than
Computing_with_memory
Concept in computer science
successor. Reversible computing is considered an unconventional approach to computation and is closely linked to quantum computing, where the principles
Reversible_computing
Sequence of program instructions invokable by other software
Evaluation strategy – Programming language evaluation rules Event (computing) – Computing state associated with a point in time Function (mathematics) – Association
Function (computer programming)
Function_(computer_programming)
Rate used to apply manufacturing overhead to work-in-process inventory
activity. The third step is to compute the predetermined overhead rate by dividing the estimated total manufacturing overhead costs by the estimated total
Pre-determined_overhead_rate
Experimental technology level
of the quantum computing implementation levels. In October 2023, the 1,000 qubit mark was passed for the first time by Atom Computing's 1,180 qubit quantum
Noisy intermediate-scale quantum computing
Noisy_intermediate-scale_quantum_computing
File system structure for locating files
In computing, a directory is a file system cataloging structure that contains references to other computer files, and possibly other directories. On many
Directory_(computing)
Computer programming paradigm
general-purpose GPU computing (GPGPU). This evolution spawned dedicated data-center product lines for High-Performance Computing (HPC), including the
Stream_processing
Category of cloud computing
the main business model for computing, and cluster computing enabled multiple computers to work together. Cloud computing emerged in the late 1990s with
Software_as_a_service
Study of hardware and software systems that have a "real-time constraint"
Real-time computing (RTC) is the computer science term for hardware and software systems subject to a "real-time constraint", for example from event to
Real-time_computing
Computer without an operating system
resources are limited or high performance is required. Bare Machine Computing is a computing paradigm in which application software runs directly on a bare
Bare_machine
quantum computing. The paper was submitted in June 1979 and published in April 1980. Yuri Manin briefly motivates the idea of quantum computing. Tommaso
Timeline of quantum computing and communication
Timeline_of_quantum_computing_and_communication
Additional storage that enables faster access to main storage
In computing, a cache (/kæʃ/ KASH) is a hardware or software component that stores data so that future requests for that data can be served faster; the
Cache_(computing)
Type of extremely powerful computer
computing whereby a "super virtual computer" of many loosely coupled volunteer computing machines performs very large computing tasks. Grid computing
Supercomputer
American artificial intelligence company
first straight-shot SSI lab", and intended to be unaffected by "management overhead or product cycles ... insulated from short-term commercial pressures".
Safe_Superintelligence_Inc.
Method by which work is assigned
preemption), dividing that process into two separate computing blocks. This creates excess overhead through additional context switching. The scheduler
Scheduling_(computing)
Digital workload distribution techniques
In computing, load balancing is the process of distributing a set of tasks over a set of resources (computing units) with the aim of making their overall
Load_balancing_(computing)
Privacy-enhancing computing technique
Confidential computing is a security and privacy-enhancing computational technique focused on protecting data in use. Confidential computing can be used
Confidential_computing
Component of a computer process
running code to couple tightly and conveniently exchange data without the overhead or complexity of an IPC. When shared between threads, however, even simple
Thread_(computing)
Ongoing cost for running a product, business, or system
cost of ownership (TCO) Capital budgeting Freight expense Operating cost Overhead (business) Working capital Also known as operating expenditure, operational
Operating_expense
Information at the beginning of data which describes or defines the data
the functions are declared in header files. Footer Protocol overhead Trailer (computing), used in computer networking Field (computer science) P. Resnick
Header_(computing)
Organization supporting the R Project
The R Project for Statistical Computing. Retrieved 2025-12-29. "Board and Auditors". The R Project for Statistical Computing. Retrieved 2025-12-29. "R: What
R Foundation for Statistical Computing
R_Foundation_for_Statistical_Computing
Condition of granules or grains
Complexity Cybernetics Dennett's three stances Granular computing Granularity (parallel computing) High- and low-level Levels of analysis Meta-system Multiple
Granularity
Data transfer channel connecting parts of a computer
like a network than the original concept of a bus, with a higher protocol overhead needed than early systems, while also allowing multiple devices to use
Bus_(computing)
Rate at which data is processed in communication networks
Blahut, 2004, p.4 Modeling Message Passing Overhead by C.Y Chou et al. in Advances in Grid and Pervasive Computing: First International Conference, GPC 2006
Network_throughput
Collection of resources used to develop a computer program
In computing, a library is a collection of resources that can be used during software development to implement a computer program. Commonly, a library
Library_(computing)
Measure of the amount of work needed to perform a computing task
In parallel computing, granularity (or grain size) of a task is a measure of the amount of work (or computation) which is performed by that task. Another
Granularity (parallel computing)
Granularity_(parallel_computing)
greenhouse gas emissions from generating electricity for data centres and computing hardware, operational and upstream water use, and material impacts from
Environmental_impact_of_AI
Form of cloud computing
Mobile Cloud Computing (MCC) is the combination of cloud computing and mobile computing to bring rich computational resources to mobile users, network
Mobile_cloud_computing
Open-source software development kit
open-source, Python-based, high-performance software stack for quantum computing, originally developed by IBM Research and first released in 2017. It provides
Qiskit
efficient worst-case access overhead", in Cachin, Christian; Ristenpart, Thomas (eds.), Proceedings of the 3rd ACM Cloud Computing Security Workshop, CCSW
Oblivious_RAM
Network proxy in peer-to-peer networks
architecture allows data to be decentralized without requiring excessive overhead at every node. However, the increased workload of supernodes generally
Supernode_(networking)
Category of cloud computing
Infrastructure as a service (IaaS) is a cloud computing service model where a cloud services vendor provides computing resources such as storage, network, servers
Infrastructure_as_a_service
Environmentally sustainable computing and information technology
the study and practice of environmentally sustainable computing or IT. The goals of green computing include optimising energy efficiency during the product's
Green_computing
Type of command for solid-state drive
some SSDs function at the lowest level, an overwrite produces significant overhead compared with writing data into an empty page, potentially crippling write
Trim_(computing)
Computing under unreliable power conditions
Intermittent computing is a computing paradigm tailored for systems that operate under unreliable or irregular power supply conditions. These systems,
Intermittent_computing
engineering software Power engineering software - software for power stations, overhead power lines, transmission towers, electrical grids, grounding, electrical
List of computer-aided engineering software
List_of_computer-aided_engineering_software
Category of cloud computing services
ISO/IEC 22123-2. Function as a Service is a subset of the serverless computing ecosystem. The "Grain of Sand Anti-pattern" refers to the creation of
Function_as_a_service
Graphical desktop-sharing system
VNC (Virtual Network Computing) is a graphical desktop-sharing system that uses the Remote Frame Buffer (RFB) protocol to remotely control another computer
VNC
Thesis on the nature of computability
physical process can be simulated by a universal computing device Computability logic Computability theory Decidability Hypercomputation Model of computation
Church–Turing_thesis
Compiling bytecode to machine code at runtime
with the flexibility of interpretation, with the overhead of an interpreter and the additional overhead of compiling and linking (not just interpreting)
Just-in-time_compilation
Type of computing cluster
2026-04-13. "The Quantian Scientific Computing Environment". Dirk Eddelbuettel. Retrieved 2026-02-12. Beowulf Cluster Computing With Windows by Thomas Lawrence
Beowulf_cluster
Type of computing architecture
No instruction set computing (NISC) is a computing architecture and compiler technology for designing highly efficient custom processors and hardware
No_instruction_set_computing
Programming language
scientific computing libraries SciPy, pandas and scikit-learn are written in Cython. Cython's domain is not limited to just numerical computing. For example
Cython
Algorithm that arranges lists in order
in a data structure which allows random access. From the beginning of computing, the sorting problem has attracted a great deal of research, perhaps due
Sorting_algorithm
Unexpected program exit due to an error
In computing, a crash, or system crash, occurs when a computer program such as a software application or an operating system stops functioning properly
Crash_(computing)
Topics referred to by the same term
and analytic computing Motorola Canopy, wireless networking system Canopy (film), a 2013 Australian war film Canopy (architecture), overhead roof or structure
Canopy
Piece of computer code
In distributed computing, a stub is a program that acts as a temporary replacement for a remote service or object. It allows the client application to
Stub_(distributed_computing)
Device that forwards data packets between computer networks
University of California, Santa Barbara, and the University of Utah School of Computing in the United States. All were built with the Honeywell 516. These computers
Router_(computing)
Computing resource shared by concurrent users
In computing, time-sharing is the concurrent sharing of a computing resource among many tasks or users by giving each task or user a small slice of processing
Time-sharing
massively parallel high-performance computing (HPC) system is particularly sensitive to operating system overhead. Traditional multi-purpose operating
Lightweight kernel operating system
Lightweight_kernel_operating_system
English fantasy author (1948–2015)
news site Reddit organised a tribute by which an HTTP header, "X-Clacks-Overhead: GNU Terry Pratchett", was added to websites' responses, a reference to
Terry_Pratchett
Network filesystem technology developed and sold by EMC Corporation
technology can be used to store and access data for grid computing, where the individual computing power of many systems is combined to perform a single
Multi_Protocol_File_System
Types of quantum information
In quantum computing, a qubit is a unit of information analogous to a bit (binary digit) in classical computing, but it is affected by quantum mechanical
Physical_and_logical_qubits
Algorithm which can do multiple operations in a given time
distributed algorithms, are algorithms designed to work in cluster computing and distributed computing environments, where additional concerns beyond the scope
Parallel_algorithm
Single instance of a software that serves multiple tenants
2nd International Conference on Cloud Computing and Services Science (CLOSER 2012). Conference on Cloud Computing and Services Science. SciTePress. Archived
Multitenancy
In computer architecture, zero-overhead looping is a hardware feature found in some processors that enables loops to execute without the performance cost
Zero-overhead_looping
Form of automatic memory management
convenience of not annotating object lifetime manually in the source code is overhead, which can impair program performance. A peer-reviewed paper from 2005
Garbage collection (computer science)
Garbage_collection_(computer_science)
Inefficient use of storage space
memory pools drastically cut internal fragmentation by spreading the space overhead over a larger number of objects. Internal fragmentation on the page level
Fragmentation_(computing)
Feature of some electrical appliances
the power or switches the system to a low-power state when inactive. In computing this is known as PC power management and is built around a standard called
Power_management
Phenomenon in parallel computing
Parallel slowdown is a phenomenon in parallel computing where parallelization of a parallel algorithm beyond a certain point causes the program to run
Parallel_slowdown
Computation of nearly accurate results
processing, machine learning, signal processing, scientific computing. Therefore, approximate computing is mostly driven by applications that are related to
Approximate_computing
Synchronization primitive for fault tolerance
optimal for all applications. If delta is too small, it requires too much overhead and if it is large it results in performance degradation as everything
Heartbeat_(computing)
1986 video game
Retrieved July 20, 2021. Kennedy, John (December 1989). "Gridiron!". Amiga Computing. p. 26. Retrieved November 15, 2022. Rönitz, Uwe (January 1990). "Gridiron
Gridiron!
Process in quantum computing
(QEC) comprises a set of techniques used in quantum memory and quantum computing to protect quantum information from errors arising from decoherence and
Quantum_error_correction
Algorithm for caching data
for Computing Machinery: 31–42. doi:10.1145/511399.511340. ISSN 0163-5999. Nimrod Megiddo and Dharmendra S. Modha. ARC: A Self-Tuning, Low Overhead Replacement
Cache_replacement_policies
Data used for bitwise operations
stencil buffer. } } The advantage to this approach is that function argument overhead is decreased. Since the minimum datum size is one byte, separating the
Mask_(computing)
Programming technique using indirect jumps
classes, for example in event listeners. The time overhead of a reflection call is traded for the space overhead of an inner class. Trampolines in Java usually
Trampoline_(computing)
Algorithm for computing trigonometric, hyperbolic, logarithmic and exponential functions
of computing square roots IEEE 754 Floating-point units Digital Circuits/CORDIC in Wikibooks Volder, Jack E. (1959-03-03). "The CORDIC Computing Technique"
CORDIC
Unfixed software vulnerability
positively to disclosures, as they can cause legal liability and operational overhead. It is not uncommon to receive cease-and-desist letters from software vendors
Zero-day_vulnerability
Resilience of systems to component failures or errors
; Treleaven, P. C. (June 1978). "Reliability Issues in Computing System Design". ACM Computing Surveys. 10 (2): 123–165. doi:10.1145/356725.356729. ISSN 0360-0300
Fault_tolerance
Computer networking protocol
option, whose overhead contribution is a mere 2 bytes compared with the 10 byte overhead of the LLC alternative. It turns out that this overhead reduction
Point-to-Point Protocol over Ethernet
Point-to-Point_Protocol_over_Ethernet
Software for deploying containerized applications
such as on-premises, in public (see decentralized computing, distributed computing, and cloud computing) or private cloud. When running on Linux, Docker
Docker_(software)
actual cost under changed conditions; (4) Plus reasonable profit/overhead computed in accordance with governing regulations on difference between 2 and
Equitable_adjustment
Ability to collect data about software execution
In software engineering, more specifically in distributed computing, observability is the ability to collect data about programs' execution, modules'
Observability_(software)
Serverless computing platform
Serverless Computing". "Secure and fast microVMs for serverless computing". "Lambda runtimes". "Optimizing AWS Lambda extensions in C# and Rust | AWS Compute Blog"
AWS_Lambda
Optical device
polarization of light in a spatially varying manner. A simple example is an overhead projector transparency. Usually when the term SLM is used, it means that
Spatial_light_modulator
Parallelism expressed within computations
rather, structure it, their computational cost is often considered as overhead. The advantage of explicit parallel programming is increased programmer
Explicit_parallelism
Computer expansion bus standard
detection and supports newer features like I/O virtualization for advanced computing needs. PCIe connections are made through lanes, which are pairs of conductors
PCI_Express
Technique for inserting fault tolerance into computing systems
long-running applications that are executed in failure-prone computing systems. In the distributed computing environment, checkpointing is a technique that helps
Application_checkpointing
Solving problems using biological models
Bio-inspired computing, short for biologically inspired computing, is a field of study which seeks to solve computer science problems using models of biology
Bio-inspired_computing
Pseudo-static random-access memory technology introduced by MoSys Inc.
Memory paging Bank switching Grid computing Cloud computing Cloud storage Fog computing Edge computing Dew computing Amdahl's law Moore's law Kryder's
1T-SRAM
American computer scientist
Elnozahy's research area is in systems, including high-performance computing, power-aware computing, fault tolerance, operating systems, system architecture, and
Mootaz_Elnozahy
Wireless networking standard in development
connectivity issues due to environmental factors, interference, and protocol overhead in dense deployment scenarios. 802.11bn maintains the same frequency bands
Wi-Fi_8
actual cost under changed conditions; (4) Plus reasonable profit/overhead computed in accordance with governing regulations on difference between 2 and
Changes_clause
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