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Record W2103437490 · doi:10.14778/2733085.2733095

ADDICT

2014· article· en· W2103437490 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.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueProceedings of the VLDB Endowment · 2014
Typearticle
Languageen
FieldComputer Science
TopicParallel Computing and Optimization Techniques
Canadian institutionsUniversity of Toronto
Fundersnot available
KeywordsComputer scienceCacheLocalityLatency (audio)CAS latencyDatabase transactionTransaction processingMemory footprintParallel computingSoftwareOperating systemMulti-core processorDistributed computingEmbedded systemDatabaseMemory controller

Abstract

fetched live from OpenAlex

Recent studies highlight that traditional transaction processing systems utilize the micro-architectural features of modern processors very poorly. L1 instruction cache and long-latency data misses dominate execution time. As a result, more than half of the execution cycles are wasted on memory stalls. Previous works on reducing stall time aim at improving locality through either hardware or software techniques. However, exploiting hardware resources based on the hints given by the software-side has not been widely studied for data management systems. In this paper, we observe that, independently of their high-level functionality, transactions running in parallel on a multicore system execute actions chosen from a limited sub-set of predefined database operations. Therefore, we initially perform a memory characterization study of modern transaction processing systems using standardized benchmarks. The analysis demonstrates that same-type transactions exhibit at most 6% overlap in their data footprints whereas there is up to 98% overlap in instructions. Based on the findings, we design ADDICT, a transaction scheduling mechanism that aims at maximizing the instruction cache locality. ADDICT determines the most frequent actions of database operations, whose instruction footprint can fit in an L1 instruction cache, and assigns a core to execute each of these actions. Then, it schedules each action on its corresponding core. Our prototype implementation of ADDICT reduces L1 instruction misses by 85% and the long latency data misses by 20%. As a result, ADDICT leads up to a 50% reduction in the total execution time for the evaluated workloads.

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)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Theoretical or conceptual · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.874
Threshold uncertainty score0.207

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0010.000
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 head0.008
GPT teacher head0.211
Teacher spread0.203 · 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