Search references for DIRECTORY BASED-CACHE-COHERENCE. Phrases containing DIRECTORY BASED-CACHE-COHERENCE
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Scalable coherence technique
computer engineering, directory-based cache coherence is a type of cache coherence mechanism, where directories are used to manage caches in place of bus snooping
Directory-based cache coherence
Directory-based_cache_coherence
Equivalence of all cached copies of a memory location
mismatched. A cache coherence protocol is used to maintain cache coherency. The two main types are snooping and directory-based protocols. Cache coherence is of
Cache_coherence
Directory-based coherence is a mechanism to handle cache coherence problem in distributed shared memory (DSM) a.k.a. non-uniform memory access (NUMA).
Directory-based_coherence
High-speed interconnect standard for shared memory multiprocessing and message passing
achieved through a distributed directory-based cache coherence model. (The other popular models for cache coherency are based on system-wide eavesdropping
Scalable_Coherent_Interface
File system structure for locating files
systems, this may be called the directory name lookup cache (DNLC), directory entry cache, or dcache. Directory lookup caches store mappings between absolute
Directory_(computing)
RAM consistency methods in multicore computers
directory-based or snooping-based (also called sniffing). Specific protocols include the MSI protocol and its derivatives MESI, MOSI and MOESI. Cache
Memory_coherence
1980s multiprocessor for shared memory
Routing Chip. The boards designed at Stanford implemented a directory-based cache coherence protocol allowing Stanford DASH to support distributed shared
Stanford_DASH
American computer scientist (born 1952)
Laudon; K. Gharachorloo; A. Gupta; J. Hennessy (1990). "The directory-based cache coherence protocol for the DASH multiprocessor". Proceedings of the 17th
John_L._Hennessy
can be classified based on: Snoopy scheme vs Directory scheme and vs Shared caches Write-through vs Write-back (WB is ownership-based) protocol Update
List of cache coherency protocols
List_of_cache_coherency_protocols
Computer memory architecture
Hardware examples include cache coherence circuits and network interface controllers. There are three ways of implementing DSM: page-based approach using virtual
Distributed_shared_memory
Computer memory design used in multiprocessing
non-shared memory known as cache to exploit locality of reference in memory accesses. With NUMA, maintaining cache coherence across shared memory has a
Non-uniform_memory_access
Computer internal interconnect architecture
aspect. It combines both snoopy cache and point-to-point directory-based models to give a two-level cache coherence model. Snoopy buses are used primarily
Fireplane
Computer memory organization
coherence mechanisms are typically used to implement the migration. A huge body of research has explored these issues. Various forms of directories,
Cache-only memory architecture
Cache-only_memory_architecture
Type of memory used on processors that require high transfer rate memory
network devices, FPGAs and ASICs; some CPUs utilize HBM as on-package cache or RAM, such as the NEC SX-Aurora TSUBASA and Fujitsu A64FX. The first HBM
High_Bandwidth_Memory
Novel type of computer memory
NVM and eDRAM caches", DATE, 2015. Prezioso, M.; et al. (2016). Teherani, Ferechteh H; Look, David C; Rogers, David J (eds.). "RRAM-based Hardware Implementation
Resistive random-access memory
Resistive_random-access_memory
Type of computer memory used from 1955 to 1975
aircraft tracking. At first, an array of Williams tubes—a storage system based on cathode-ray tubes—was used, but proved temperamental and unreliable.
Magnetic-core_memory
Assist which reduces cache coherence snoops traffic. When enabled, 1 MiB of L3 cache on each chip is used as a cache coherence directory. Socket F platform
List of AMD Opteron processors
List_of_AMD_Opteron_processors
Process of encoding and decoding binary data to and from synthesized strands of DNA
an engineered "molecular recorder" allows for direct encoding of light-based stimuli into engineered E.coli cells. This approach can also be parallelized
DNA_digital_data_storage
Computer memory type used for data preservation
the name 5D Memory Crystal. Hitachi and Microsoft have researched glass-based optical storage techniques, the latter under the name Project Silica. The
5D_optical_data_storage
Transaction tracker in computer systems
larger cache coherent NUMA (ccNUMA) systems tend to use directory-based coherence protocols. When a bus transaction occurs to a specific cache block,
Bus_snooping
Novel computer memory type
represent two bits, doubling memory density. Phase-change memory devices based on germanium, antimony and tellurium present manufacturing challenges, since
Phase-change_memory
Computer storage device with no moving parts
data. Many flash-based SSDs include a small amount of volatile DRAM as a cache, similar to the buffers in hard disk drives. This cache can temporarily
Solid-state_drive
Memory card format
standard. Introduced in 1999 by SanDisk, Panasonic, and Toshiba, SD was based on the MMC electrical interface but added digital rights management (DRM)
MultiMediaCard
Form of non-volatile memory used in computers and other electronic devices
both in controller design and of storage, the use of large DRAM read/write caches and the implementation of memory cells which can store more than one bit
Read-only_memory
Replaceable device used for the distribution and storage of video games
cartridge-based. As compact disc technology became widely used for data storage, most hardware companies moved from cartridges to CD-based game systems
ROM_cartridge
Computer memory that does not lose its contents after being turned off
Thinfilm produces rewriteable non-volatile organic ferroelectric memory based on ferroelectric polymers. Thinfilm successfully demonstrated roll-to-roll
Non-volatile_memory
Early type of computer memory
originally developed for making bells. The first practical de-cluttering system based on the concept was developed by J. Presper Eckert at the University of Pennsylvania's
Delay-line_memory
Proprietary database management system
which are private to individual processes. The shared pool, database buffer cache, and redo log buffer are components of the SGA, and the optional In-Memory
Oracle_Database
Computer memory that can be accessed by multiple processes
well. Most of them have ten or fewer processors; lack of data coherence: whenever one cache is updated with information that may be used by other processors
Shared_memory
Early form of read-only memory
Computer memory and data storage types General Memory cell Memory coherence Cache coherence Memory hierarchy Memory access pattern Memory map Secondary storage
Core_rope_memory
Data storage device
defragmenting a flash drive can improve performance (mostly due to improved caching of the clustered data), and the additional wear on flash drives may not
USB_flash_drive
Type of computer memory
expensive in terms of silicon area and cost. Typically, SRAM is used for the cache and internal registers of a CPU while DRAM is used for a computer's main
Static_random-access_memory
Component that stores information
storage cache and write buffer to improve both reading and writing performance. Operating systems typically borrow RAM capacity for caching so long as
Computer_memory
Discontinued computer memory type
inherently fast and byte-addressable, techniques such as read-modify-write and caching used to enhance traditional SSDs are not needed to obtain high performance
3D_XPoint
Recording of information in a storage medium
mobile segment from phones to notebooks, the majority of systems today is based on NAND Flash. As for Enterprise and data centers, storage tiers have established
Data_storage
Method to store and retrieve computer data using optics
Computer memory and data storage types General Memory cell Memory coherence Cache coherence Memory hierarchy Memory access pattern Memory map Secondary storage
Optical_storage
Programming paradigm in which many processes are executed simultaneously
accessed (and thus should be purged). Designing large, high-performance cache coherence systems is a very difficult problem in computer architecture. As a
Parallel_computing
Database class for storage and retrieval of modeled data
Comparison of structured storage software Database scalability Distributed cache Faceted search List of NoSQL software and tools MultiValue database Multi-model
NoSQL
Type of computer memory
url-status (link) Jacob, B.; Ng, S. W.; Wang, D. T. (2008). Memory Systems: Cache, DRAM, Disk. Morgan Kaufmann. p. 333. ISBN 9780080553849. Kalter, H. L.;
DDR_SDRAM
Computer memory used for small quantities of data
rewriting. As is described in former section, old EEPROMs are based on avalanche breakdown-based hot-carrier injection with high reverse breakdown voltage
EEPROM
Type of computer memory
devices of 65 nm and smaller. The downside is the need to maintain the spin coherence. Overall, the STT requires much less write current than conventional or
Magnetoresistive_RAM
Cache coherence protocol
computing, the MSI protocol - a basic cache-coherence protocol - operates in multiprocessor systems. As with other cache coherency protocols, the letters of
MSI_protocol
Novel type of computer memory
Instruments and IBM. In 2024–2025 ferroelectric RAM research was driven by HfO₂-based materials for CMOS compatibility, scalability to <10 nm, and integration
Ferroelectric_RAM
Central computer component that executes instructions
handful, schemes such as non-uniform memory access (NUMA) and directory-based coherence protocols were introduced in the 1990s. SMP systems are limited
Central_processing_unit
Write once computer memory
power management ICs (PMICs). Commercially available semiconductor antifuse-based OTP memory arrays have been around at least since 1969, with initial antifuse
Programmable_ROM
Data storage device
storage pools", bcache and dm-cache on Linux, Intel's Hystor and Apple's Fusion Drive, and other Logical Volume Management based implementations on OS X. By
Hybrid_drive
Type of computer memory
decryption. Much larger battery-backed memories are still used today as caches for high-speed databases that require a performance level newer NVRAM devices
Non-volatile random-access memory
Non-volatile_random-access_memory
Computer memory architecture
There are four major storage levels. Internal – processor registers and cache. Main – the system RAM and controller cards. On-line mass storage – secondary
Memory_hierarchy
Obsolete type of non-volatile computer memory
development of the first magnetic-core memory system driven by a transistor-based controller, and the second was the development of twistor memory. Twistor
Bubble_memory
Magnetic data storage device
Computer memory and data storage types General Memory cell Memory coherence Cache coherence Memory hierarchy Memory access pattern Memory map Secondary storage
Drum_memory
Processor design concept
and processor design, a translation lookaside buffer (TLB) is a memory cache that stores the recent translations of virtual memory addresses to physical
Translation_lookaside_buffer
2-D grid of wires where data is represented by the presence or absence of diodes at nodes
fast instruction cache sped that cache up to the point that the control store was only a few times faster than the instruction cache, leading to fewer
Diode_matrix
Pseudo-static random-access memory technology introduced by MoSys Inc.
rows × 256 bits/row, 32 kilobits in total) coupled to a bank-sized SRAM cache and an intelligent controller. Although space-inefficient compared to regular
1T-SRAM
Random-access memory with processing elements integrated on the same chip
and Software Stack for PIM Based on Commercial DRAM Technology: Industrial Product". Shuangchen Li, et al.,"DRISA: A dram-based reconfigurable in-situ accelerator"
Computational_RAM
Novel computer memory type
past read/write elements. Improvements in magnetic detection capabilities, based on the development of spintronic magnetoresistive sensors, allow the use
Racetrack_memory
Electro-mechanical data storage device
logical blocks. For example, some of the disk space will be used to hold a directory of disk file names and a list of logical blocks associated with a particular
Hard_disk_drive
Series of server computers
individual cache memories but are kept coherent with one another by cache coherence hardware mechanisms. In this case, a directory-based coherency mechanism
HPE_Superdome
American research center, 1985–1995
1145/318789.318824 Hoichi Cheong: “Life span strategy - a compiler-based approach to cache coherence," Proceedings of the International Conference on Supercomputing
University of Illinois Center for Supercomputing Research and Development
University_of_Illinois_Center_for_Supercomputing_Research_and_Development
American electrical engineer
She completed her Ph.D. in 1988 with the dissertation The effects of cache coherence on the performance of parallel PDE algorithms in multiprocessor systems
Sandra_Johnson
Proposed form of computer storage
entering in 2015–2016 to have a PC with: - a CPU with a 4×256 KB L2 cache, and a 6 MB L3 cache - 16 GB DRAM - 256 GB solid-state drive, and - 1 TB hard disk
Universal_memory
Magnetic tape data storage technology
In contrast, LTFS utilizes an XML-based index file to present the copied files as if organized into directories. This means LTFS-formatted tape media
Linear_Tape-Open
Data storage device
circuits. For example, the microprocessor chips that run computers contain cache memory to store instructions awaiting execution. Volatile memory loses its
Semiconductor_memory
Computer network with multiple nodes to store information
Data store Keyspace, the DDS schema Distributed hash table Distributed cache Cyber Resilience Yaniv Pessach, Distributed Storage (Distributed Storage:
Distributed_data_store
Type of computer memory
used where speed is of greater concern than cost and size, such as the cache memories in processors. The need to refresh DRAM demands more complicated
Dynamic_random-access_memory
Type of memory used on graphics cards
Computer memory and data storage types General Memory cell Memory coherence Cache coherence Memory hierarchy Memory access pattern Memory map Secondary storage
GDDR_SDRAM
Novel computer memory type
higher performance. Some NRAM could be placed on the CPU to act as the CPU cache, and more in other chips replacing both the DRAM and flash. NRAM is one
Nano-RAM
Microprocessor by Oracle, and the servers containing them
L2 caches to the shared L3 cache. Multiprocessor cache coherence is maintained using a directory-based protocol. The design scales up to eight sockets
SPARC_T5
Early type of solid state computer memory
function, further reducing cost. OTP versions of both EPROMs and EPROM-based microcontrollers are manufactured. However, OTP EPROM (whether separate
EPROM
Removable disk storage medium
storage, and eventually cloud-based online storage would render all these removable disk formats obsolete. External USB-based floppy disk drives are still
Floppy_disk
Data storage technologies that use magnetic tape
products replacing them with cartridge based products beginning with its 1984 introduction of the cartridge-based 3480 family.[citation needed] LINCtape
Magnetic-tape_data_storage
Form of computer data storage
memory hierarchy consisting of processor registers, on-die SRAM caches, external caches, DRAM, memory paging systems and virtual memory or swap space on
Random-access_memory
Implementation of an internet protocol
OpenLDAP is a free, open-source implementation of the Lightweight Directory Access Protocol (LDAP) developed by the OpenLDAP Project. It is released under
OpenLDAP
Dynamic random-access memory included in a processor chip or package
is positioned between level 3 cache and conventional DRAM on the memory bus, and effectively functions as a level 4 cache, though architectural descriptions
EDRAM
Type of computer memory
A modern microprocessor with a cache will generally access memory in units of cache lines. To transfer a 64-byte cache line requires eight consecutive
Synchronous dynamic random-access memory
Synchronous_dynamic_random-access_memory
Software products
Oracle Coherence Oracle Service Registry – metadata registry application-server security Oracle Web Cache Oracle HTTP Server - a web server based on Apache
Oracle_Fusion_Middleware
Flat, usually circular disc that encodes binary data
were taken at the rate of 44,100 samples per second. This sample rate was based on the Nyquist rate of 40,000 samples per second required to capture the
Optical_disc
Non-volatile memory technology
that led to many efforts to introduce products to replace it. Flash is based on the floating gate concept, essentially a modified transistor. Conventional
Programmable metallization cell
Programmable_metallization_cell
Family of 64-bit Intel microprocessors
link planes to create a 512-socket cache-coherent single-image system. A cache for the in-memory coherence directory saves memory bandwidth and reduces
Itanium
Early type of computer memory
processes, which was expected to lead to much lower production costs than core-based systems. Introduced by Bell Labs in 1957, the first commercial use was in
Twistor_memory
Data recording made of plastic film
long, narrow strip of plastic film. It was developed in Germany in 1928, based on the earlier magnetic wire recording from Denmark. Devices that use magnetic
Magnetic_tape
Electronic non-volatile computer storage device
programming interfaces for nonvolatile memory subsystems, including the "flash cache" device connected to the PCI Express bus. NOR and NAND flash differ in two
Flash_memory
Early high speed computer memory
Computer memory and data storage types General Memory cell Memory coherence Cache coherence Memory hierarchy Memory access pattern Memory map Secondary storage
Thin-film_memory
Computer memory that loses its contents when unpowered
the storage capabilities of the DRAM family. SRAM is commonly used as CPU cache and for processor registers and in networking devices. Non-volatile memory
Volatile_memory
Use of paper as computer memory
Computer memory and data storage types General Memory cell Memory coherence Cache coherence Memory hierarchy Memory access pattern Memory map Secondary storage
Paper_data_storage
Storage of digital data readable by computers
Multi-level hierarchical cache setup is also commonly used, such that primary cache is the smallest and fastest, while secondary cache is larger and slower
Computer_data_storage
Brazilian computer engineer
Proceedings. of the ACM Conference on Supercomputing, November 1991. Cache Coherence on a Slotted Ring. Luiz André Barroso and Michel Dubois. In Proceedings
Luiz_André_Barroso
Storage device technology
like a hard drive. Silicon-based UltraRAM devices have demonstrated extrapolated data storage times (estimated lifespan based on testing) of at least 1
UltraRAM
Type of random-access memory
to the screen. Apart from VRAM, most other types of dual-ported RAM are based on static RAM technology. Most CPUs implement the processor registers as
Dual-ported_RAM
Microprocessor
Cache coherence is provided by the memory controllers. Each memory controller has a cache coherence engine. The Alpha 21364 uses a directory cache coherence
Alpha_21364
Disk operating system of the AmigaOS
file systems, file and directory manipulation, the command-line interface, and file redirection. In AmigaOS 1.x, AmigaDOS is based on a TRIPOS port by MetaComCo
AmigaDOS
Obsolete type of novel computer memory based on DRAM
physical distance that data would have to travel to exit a block. For a large cache memory (as typically found in a high-performance microprocessor), Z-RAM
Z-RAM
Open-source parallel file system
Direct interface for applications Client caching for the direct interface with multi-process single-system coherence Initial release of the webpack supporting
OrangeFS
Early type of computer memory
Computer memory and data storage types General Memory cell Memory coherence Cache coherence Memory hierarchy Memory access pattern Memory map Secondary storage
Mellon_optical_memory
Processor expansion bus standard
the Power Service Layer (PSL). The CAPP and PSL units acts like a cache directory so the attached device and the CPU can share the same coherent memory
Coherent Accelerator Processor Interface
Coherent_Accelerator_Processor_Interface
Novel type of computer memory
theoretical areal density just over 1Tbit/in². IBM planned to introduce devices based on this sort of density in 2007. For comparison, as of late 2011, laptop
Millipede_memory
IBM data storage technology that uses PCI Express and NVMe
Systems Introduces the World's Fastest Flash-Based Solid State Device and the First Enterprise-Class Cached Flash Storage System". VITA Technologies. Retrieved
Flash_Core_Module
Persistent computer data storage with no moving parts
frequently used for hybrid drives, in which solid-state storage serves as a cache for frequently accessed data instead of being a complete substitute for
Solid-state_storage
Novel type of computer memory
Computer memory and data storage types General Memory cell Memory coherence Cache coherence Memory hierarchy Memory access pattern Memory map Secondary storage
FJG_RAM
Part of computer memory
always available. That is the reason why SRAM memory is used for on-chip cache included in modern microprocessor chips. On December 11, 1946 Freddie Williams
Memory_cell_(computing)
Type of computer memory
Computer memory and data storage types General Memory cell Memory coherence Cache coherence Memory hierarchy Memory access pattern Memory map Secondary storage
LPDDR
DIRECTORY BASED-CACHE-COHERENCE
DIRECTORY BASED-CACHE-COHERENCE
Boy/Male
Indian
The guide, Director, Leader
Boy/Male
Indian
The guide, Director, Leader
Girl/Female
American, Australian
Storage Place
Boy/Male
Spanish
Bringer of peace.
Boy/Male
Muslim/Islamic
Brave
Boy/Male
Muslim/Islamic
Smiling
Boy/Male
Muslim/Islamic
Director guide
Boy/Male
Armenian, Australian
Nomadic Cart
Boy/Male
American, British, English
Lives Near Water
Boy/Male
Indian
The guide, Director, Leader
Male
Egyptian
, chief, director.
Boy/Male
Afghan, African, Arabic, Australian, Chinese, Greek, Indian, Muslim
Brave
Boy/Male
Latin
Son of Vukan.
Girl/Female
British, English
Based
Boy/Male
Muslim
The guide, Director, Leader
Boy/Male
Muslim
Smiling
Boy/Male
Muslim
The guide, Director, Leader
Boy/Male
Arabic, Australian
Smiling
Boy/Male
Native American
stomach ache.
Boy/Male
Irish
Observant; alert; vigorous.
DIRECTORY BASED-CACHE-COHERENCE
DIRECTORY BASED-CACHE-COHERENCE
Boy/Male
Arabic, Hindu, Indian, Muslim, Sindhi
Full Moon
Boy/Male
English American Greek
Crown; wreath.
Girl/Female
Australian, French, Latin
French Form of Hilary Joyful; Glad
Girl/Female
Hindu
Star, Noble
Boy/Male
Welsh
Legendary a prince of Ireland.
Boy/Male
Bengali, Hindu, Indian, Malayalam, Marathi
Flowers of Lord Vishnu and Krishna
Boy/Male
Australian, German
Nephew
Surname or Lastname
English
English : occupational name for a wattler, Middle English watelere, i.e. someone who made the panels of interwoven twigs that were used to fill the spaces between the structural timbers of a timber frame building. See also Dauber.
Girl/Female
Arabic, Muslim
Chaste; Virtuous; Decent; Pure
Boy/Male
Tamil
DIRECTORY BASED-CACHE-COHERENCE
DIRECTORY BASED-CACHE-COHERENCE
DIRECTORY BASED-CACHE-COHERENCE
DIRECTORY BASED-CACHE-COHERENCE
DIRECTORY BASED-CACHE-COHERENCE
a.
Reduced; lowered; restrained; as, to speak with bated breath.
a.
Having a base, or having as a base; supported; as, broad-based.
v. i.
Continued pain, as distinguished from sudden twinges, or spasmodic pain. "Such an ache in my bones."
n.
A rustic play; -- called also prisoner's base, prison base, or bars.
n.
Wearing, or protected by, bases.
n.
Alt. of Rache
n.
A body of directors; board of management; especially, a committee which held executive power in France under the first republic.
n.
One who directs; a director.
n.
The office of director; also, a body of directors taken jointly.
n.
One of a body of persons appointed to manage the affairs of a company or corporation; as, the directors of a bank, insurance company, or railroad company.
imp. & p. p.
of Base
n.
A pie; baked food.
pl.
of Directory
n.
A book containing the names and residences of the inhabitants of any place, or of classes of them; an address book; as, a business directory.
a.
Morally low. Hence: Low-minded; unworthy; without dignity of sentiment; ignoble; mean; illiberal; menial; as, a base fellow; base motives; base occupations.
n.
Alt. of Lache
a.
Alloyed with inferior metal; debased; as, base coin; base bullion.
a.
Pertaining to: director or directory; specifically, relating to the Directory of France under the first republic. See Directory, 3.
n.
A collection or body of directions, rules, or ordinances; esp., a book of directions for the conduct of worship; as, the Directory used by the nonconformists instead of the Prayer Book.
a.
Not held by honorable service; as, a base estate, one held by services not honorable; held by villenage. Such a tenure is called base, or low, and the tenant, a base tenant.