A (atomic instructions)
E193748
A (atomic instructions) is the RISC‑V standard extension that adds low-level atomic read-modify-write operations to support efficient synchronization and multithreaded programming.
All labels observed (2)
| Label | Occurrences |
|---|---|
| A (atomic instructions) canonical | 1 |
| RISC-V atomic extension | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1717910 — 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: A (atomic instructions) Context triple: [RISC-V, hasExtension, A (atomic instructions)]
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A.
A's
A's is the common nickname for the Philadelphia Athletics, a historic Major League Baseball franchise.
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B.
ASM
ASM is the three-letter ISO 3166-1 alpha-3 country code assigned to American Samoa, an unincorporated territory of the United States in the South Pacific Ocean.
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C.
ASM
ASM is a leading professional organization dedicated to advancing the microbial sciences through research, education, and advocacy.
-
D.
AAR
AAR is the American Association of Railroads' wheel arrangement classification system commonly used to describe locomotive axle configurations in North America.
-
E.
A24
A24 is an independent entertainment company known for producing and distributing critically acclaimed and distinctive films and television series.
- 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: A (atomic instructions) Target entity description: A (atomic instructions) is the RISC‑V standard extension that adds low-level atomic read-modify-write operations to support efficient synchronization and multithreaded programming.
-
A.
A's
A's is the common nickname for the Philadelphia Athletics, a historic Major League Baseball franchise.
-
B.
ASM
ASM is the three-letter ISO 3166-1 alpha-3 country code assigned to American Samoa, an unincorporated territory of the United States in the South Pacific Ocean.
-
C.
ASM
ASM is a leading professional organization dedicated to advancing the microbial sciences through research, education, and advocacy.
-
D.
AAR
AAR is the American Association of Railroads' wheel arrangement classification system commonly used to describe locomotive axle configurations in North America.
-
E.
A24
A24 is an independent entertainment company known for producing and distributing critically acclaimed and distinctive films and television series.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf |
RISC-V standard extension
ⓘ
instruction set architecture extension ⓘ |
| addsFeature | atomic read-modify-write operations ⓘ |
| alsoKnownAs |
RISC-V A extension
ⓘ
A (atomic instructions) ⓘ
surface form:
RISC-V atomic extension
|
| belongsToCategory |
RISC-V
ⓘ
surface form:
RISC-V base and standard extensions
|
| compatibleWith |
RISC-V
ⓘ
surface form:
RISC-V base integer ISA RV128I
RISC-V ⓘ
surface form:
RISC-V base integer ISA RV32I
RISC-V base integer ISA RV64I ⓘ |
| definedBy | RISC-V International ⓘ |
| designedFor | shared-memory multiprocessors ⓘ |
| enables |
implementation of atomic reference counters
ⓘ
implementation of mutexes ⓘ implementation of semaphores ⓘ implementation of spinlocks ⓘ lock-free data structures ⓘ |
| extensionLetter | A ⓘ |
| fullName | Atomic Instructions extension ⓘ |
| goal |
provide portable atomic primitives across RISC-V implementations
ⓘ
support scalable synchronization on RISC-V platforms ⓘ |
| hasAbbreviation | A ⓘ |
| hasGranularity |
doubleword-sized atomic operations
ⓘ
word-sized atomic operations ⓘ |
| hasProperty |
avoids need for heavy-weight locking primitives in many cases
ⓘ
provides single-instruction atomicity for certain memory operations ⓘ |
| includesInstructionClass |
atomic memory operation instructions
ⓘ
load-reserved instructions ⓘ store-conditional instructions ⓘ |
| partOf |
RISC-V
ⓘ
surface form:
RISC-V ISA
|
| requires | naturally aligned memory accesses for atomicity ⓘ |
| standardType | unprivileged ISA extension ⓘ |
| supports |
efficient synchronization
ⓘ
lock-free algorithms ⓘ multithreaded programming ⓘ wait-free algorithms ⓘ |
| targetDomain |
concurrent software
ⓘ
multicore processors ⓘ |
| usedIn |
concurrent data structure implementations on RISC-V
ⓘ
multithreaded runtime libraries on RISC-V ⓘ operating system kernels on RISC-V ⓘ |
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: A (atomic instructions) Description of subject: A (atomic instructions) is the RISC‑V standard extension that adds low-level atomic read-modify-write operations to support efficient synchronization and multithreaded programming.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
RISC-V atomic extension