52 lines
1.4 KiB
Rust
52 lines
1.4 KiB
Rust
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use sha2::{Sha256, Digest};
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use std::io::Write;
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use std::time::{Duration, Instant};
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fn measure_one_minute() -> u64 {
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let mut hash = [0u8; 32];
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let duration = Duration::from_secs(60);
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let start = Instant::now();
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let mut count: u64 = 0;
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loop {
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for _ in 0..10_000 {
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hash = Sha256::digest(&hash).into();
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count += 1;
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}
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if start.elapsed() >= duration {
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break;
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}
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}
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std::hint::black_box(hash);
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count
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}
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fn main() {
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println!("Montana D_0 calibration benchmark");
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println!("Single-threaded SHA-256 iteration, 3 runs of 60 seconds each");
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println!();
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let mut results = Vec::new();
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for i in 1..=3 {
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print!("Run {}/3 (~60s)... ", i);
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std::io::stdout().flush().ok();
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let count = measure_one_minute();
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println!("{} hashes ({:.2} MH/s)", count, count as f64 / 60_000_000.0);
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results.push(count);
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}
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let total: u64 = results.iter().sum();
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let avg = total / results.len() as u64;
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let min = *results.iter().min().unwrap();
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let max = *results.iter().max().unwrap();
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println!();
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println!("=== Results ===");
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println!("Min: {} ({:.2} MH/s)", min, min as f64 / 60_000_000.0);
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println!("Max: {} ({:.2} MH/s)", max, max as f64 / 60_000_000.0);
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println!("Average: {} ({:.2} MH/s)", avg, avg as f64 / 60_000_000.0);
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println!();
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println!("Recommended D_0 = {}", avg);
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}
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