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nora 2023-12-03 14:56:40 +01:00
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2023/day1/README.md
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# day 1
benchmarks:
Ensure that `input.txt` contains many, many copies of the actual input, the actual input is way too small.
`cargo build --release && hyperfine 'target/release/day1 part2 naive' 'target/release/day1 part2 zero_alloc' 'target/release/day1 part2 branchless' 'target/release/day1 part2 vectorized'`
```
Benchmark 1: target/release/day1 part2 naive
Time (mean ± σ): 1.066 s ± 0.017 s [User: 1.048 s, System: 0.018 s]
Range (min … max): 1.049 s … 1.099 s 10 runs
Benchmark 2: target/release/day1 part2 zero_alloc
Time (mean ± σ): 212.7 ms ± 3.5 ms [User: 195.0 ms, System: 17.6 ms]
Range (min … max): 206.9 ms … 219.0 ms 14 runs
Benchmark 3: target/release/day1 part2 branchless
Time (mean ± σ): 137.2 ms ± 1.8 ms [User: 117.5 ms, System: 19.6 ms]
Range (min … max): 133.5 ms … 142.2 ms 21 runs
Benchmark 4: target/release/day1 part2 vectorized
Time (mean ± σ): 87.9 ms ± 0.9 ms [User: 68.6 ms, System: 19.1 ms]
Range (min … max): 86.5 ms … 90.6 ms 33 runs
Summary
target/release/day1 part2 vectorized ran
1.56 ± 0.03 times faster than target/release/day1 part2 branchless
2.42 ± 0.05 times faster than target/release/day1 part2 zero_alloc
12.13 ± 0.22 times faster than target/release/day1 part2 naive
```