JuliaCI / JuliaCI/BenchmarkTools.jl

Reproducible randomness in setup for BenchmarkGroups

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#201 2 comments 0 reactions 0 assignees View on GitHub

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enhancement
Dominant language
Julia
Stars
684
Forks
107
PR merge metrics
No merged PRs in 30d

Description

When working with random numbers or would be useful to have a way to guarantee that each benchmark in a group uses the same series of numbers. Unless I'm mistaken there is no way to do this now.

If BenchmarkGroup had a property setup::Function which was evaluated for each Benchmark, one could use setup=()->seed! (1234) to make sure that the benchmark runs use the same sets of numbers.

Or setupcould be an Expr so you could create a new rng.

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the BenchmarkGroup and Benchmark entry points and tracing how each benchmark in a group is initialized and run. Compare the proposed setup::Function and Expr approaches, then define and test behavior showing that benchmarks in one group can receive reproducible random-number sequences.

Written by the indexing model from the issue text.

Assessment

Tech stack
julia
Domain
performance
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
25/100

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