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Record W7044128187

Virtual Single-Core for Multicore Real-Time Computing

2020· article· en· W7044128187 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

aboutThe title or abstract carries a Canadian signal from the geographic lexicon.
no affNo Canadian affiliation: this work is invisible to an affiliation-only frame.
No Canadian affiliation. An affiliation-only frame, the usual design, would never have seen this work. It is one of the works that make the case for inverting the frame.

Bibliographic record

VenueIDEALS (University of Illinois Urbana-Champaign) · 2020
Typearticle
Languageen
FieldComputer Science
TopicReal-Time Systems Scheduling
Canadian institutionsnot available
Fundersnot available
KeywordsMulti-core processorCertificationAvionicsSoftwareAviationCore (optical fiber)
DOInot available

Abstract

fetched live from OpenAlex

This paper introduces Virtual Single-Core (VSC) technology that allows engineers to use a group of cores in a multicore computer as if the group of cores were a larger single-core computer.
\n
\nMulticore technology has many benefits, such as increased CPU bandwidth per chip. However, when used as is, inter-core interferences can be severe. Because of the potential for large and random delay spikes, the U.S. Federal Aviation Administration (FAA), European Aviation Safety Agency (EASA), and Transport Canada specify that only one core can be used, unless inter-core interference is specifically defined and handled. In addition, DO-178C: Software Considerations in Airborne Systems and Equipment Certification is for single-core chips only. 
\nSingle-core Equivalence (SCE) technology partitions the resources shared by cores in such a way that each core can be used as if it were a single-core computer. SCE is an effective solution that address certification authorities' concerns of intercore interference. However, a core in a multicore chip is often slower than a fast single-core chip. Therefore, a large multi-thread (task) application may not be scheduled within a core. 
\nVirtual Single-Core (VSC) technology extends the SCE technology so that a group of cores can be used to schedule a large application as if the VSC were a larger single-core computer. VSC greatly facilities the migration of certified avionics software from single-core computers to multicore computers.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.942
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0000.001
Science and technology studies0.0000.000
Scholarly communication0.0000.001
Open science0.0020.001
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.038
GPT teacher head0.218
Teacher spread0.180 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it