Trait Benchmark

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pub trait Benchmark {
    type Input: Clone;
    type Output;

    // Required methods
    fn prepare(&self) -> Self::Input;
    fn execute(&self, input: Self::Input) -> Result<Self::Output, String>;
    fn name(&self) -> String;
    fn sync(&self);

    // Provided methods
    fn warmup_budget(&self) -> Duration { ... }
    fn num_samples(&self) -> usize { ... }
    fn options(&self) -> Option<String> { ... }
    fn shapes(&self) -> Vec<Vec<usize>> { ... }
    fn work(&self) -> Option<Work> { ... }
    fn profile(&self, args: Self::Input) -> Result<ProfileDuration, String> { ... }
    fn profile_full(&self, args: Self::Input) -> Result<ProfileDuration, String> { ... }
    fn run(
        &self,
        timing_method: TimingMethod,
    ) -> Result<BenchmarkDurations, String> { ... }
}

Expand description

Benchmark trait.

Required Associated Types§

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type Input: Clone

Benchmark input arguments.

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type Output

The benchmark output.

Required Methods§

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fn prepare(&self) -> Self::Input

Prepare the benchmark, run anything that is essential for the benchmark, but shouldn’t count as included in the duration.

§Notes

This should not include warmup, the benchmark will be run at least one time without measuring the execution time.

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fn execute(&self, input: Self::Input) -> Result<Self::Output, String>

Execute the benchmark and returns the logical output of the task executed.

It is important to return the output since otherwise deadcode optimization might optimize away code that should be benchmarked.

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fn name(&self) -> String

Name of the benchmark, should be short and it should match the name defined in the crate Cargo.toml

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fn sync(&self)

Wait for computation to complete.

Provided Methods§

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fn warmup_budget(&self) -> Duration

Wall clock the warmup holds the device for before sampling starts.

A device takes hundreds of milliseconds to reach the clocks it sustains, and under half a second a GPU still samples a step low. BENCH_WARMUP_MS buys the wall clock back and pays in accuracy.

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fn num_samples(&self) -> usize

Number of samples per run required to have a statistical significance.

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fn options(&self) -> Option<String>

The options passed to the benchmark.

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fn shapes(&self) -> Vec<Vec<usize>>

Shapes dimensions

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fn work(&self) -> Option<Work>

The work one execution performs, for scoring the run against measured peak throughput. None when the benchmark has no such figure to report.

One figure rather than per-resource bounds because this crate cannot name a throughput key. A bound builder that can, such as roofline_bounds in cubecl-std, splits it.

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