DMA
E38930
DMA (Direct Memory Access) is a computer feature that allows hardware devices to transfer data directly to and from system memory without continuous CPU involvement, improving performance and efficiency.
All labels observed (4)
| Label | Occurrences |
|---|---|
| DMA canonical | 3 |
| DMA controller | 1 |
| Direct Memory Access | 1 |
| linux-dmabuf | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T299785 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: DMA Context triple: [ATA, supportsMode, DMA]
-
A.
AMBA
AMBA (the Association of MBAs) is a leading international accreditation body that evaluates and endorses the quality of postgraduate business education programs worldwide.
-
B.
DAL
DAL is the stock ticker symbol for Delta Air Lines, a major U.S.-based international airline.
-
C.
MMU
MMU is a large public university in Manchester, England, known for its diverse academic programs and strong links with industry and the creative sectors.
-
D.
InfiniBand
InfiniBand is a high-speed, low-latency communications standard commonly used as the interconnect fabric in supercomputers and large-scale data centers.
-
E.
SCSI
SCSI (Small Computer System Interface) is a set of standards for connecting and transferring data between computers and peripheral devices, widely used for high-performance storage solutions.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: DMA Target entity description: DMA (Direct Memory Access) is a computer feature that allows hardware devices to transfer data directly to and from system memory without continuous CPU involvement, improving performance and efficiency.
-
A.
AMBA
AMBA (the Association of MBAs) is a leading international accreditation body that evaluates and endorses the quality of postgraduate business education programs worldwide.
-
B.
DAL
DAL is the stock ticker symbol for Delta Air Lines, a major U.S.-based international airline.
-
C.
MMU
MMU is a large public university in Manchester, England, known for its diverse academic programs and strong links with industry and the creative sectors.
-
D.
InfiniBand
InfiniBand is a high-speed, low-latency communications standard commonly used as the interconnect fabric in supercomputers and large-scale data centers.
-
E.
SCSI
SCSI (Small Computer System Interface) is a set of standards for connecting and transferring data between computers and peripheral devices, widely used for high-performance storage solutions.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
computer hardware feature
ⓘ
data transfer mechanism ⓘ |
| abbreviationOf | Direct Memory Access ⓘ |
| allows | asynchronous data transfer relative to CPU ⓘ |
| appearedIn | early minicomputers and mainframes ⓘ |
| bypasses | CPU data movement instructions ⓘ |
| canCause |
cache coherency issues
ⓘ
memory contention ⓘ |
| commonIn | modern computer architectures ⓘ |
| configuredBy | device driver software ⓘ |
| contrastedWith | CPU-driven data transfer ⓘ |
| controlledBy | DMA controller hardware ⓘ |
| enables | direct data transfer between I/O devices and main memory ⓘ |
| frees | CPU for other tasks ⓘ |
| fullName |
DMA
self-linksurface differs
ⓘ
surface form:
Direct Memory Access
|
| hasComponent |
DMA
self-linksurface differs
ⓘ
surface form:
DMA controller
|
| hasMode |
burst mode
ⓘ
cycle stealing mode ⓘ transparent mode ⓘ |
| improves |
data transfer efficiency
ⓘ
system performance ⓘ |
| operatesBetween |
I/O device and main memory
ⓘ
peripheral and RAM ⓘ |
| reduces |
CPU involvement in data transfer
ⓘ
CPU overhead ⓘ |
| relatedTo |
interrupts
ⓘ
programmed I/O ⓘ |
| requires |
bus arbitration
ⓘ
hardware support in the system bus ⓘ memory address information ⓘ transfer direction information ⓘ transfer length information ⓘ |
| supports |
block data transfers
ⓘ
burst transfers ⓘ scatter-gather transfers ⓘ single transfers ⓘ |
| usedFor |
audio streaming
ⓘ
disk I/O ⓘ high-speed data acquisition ⓘ memory-to-memory copy operations ⓘ network packet transfer ⓘ video streaming ⓘ |
| usedIn |
computer systems
ⓘ
disk controllers ⓘ embedded systems ⓘ graphics cards ⓘ microcontrollers ⓘ network interface controllers ⓘ sound cards ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: DMA Description of subject: DMA (Direct Memory Access) is a computer feature that allows hardware devices to transfer data directly to and from system memory without continuous CPU involvement, improving performance and efficiency.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
DMA controller
this entity surface form:
linux-dmabuf